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术语表

1303 个术语

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10年心血管风险

定义

十年心血管风险是指利用经过验证的、将年龄、性别、血压、胆固醇、糖尿病状况和吸烟情况纳为考量因素的计算公式,估算个人在未来十年内发生主要心血管事件(如心脏病发作或中风)的大致概率(以百分比表示);当前的指南仅建议将原发性预防阿司匹林用于成……

为什么这很重要

这个数值是医生用来判断对于从未患过心脏病的人而言,阿司匹林的益处是否可能大于出血风险的关键阈值。.

每日阿司匹林究竟是在夺走你的生命还是在拯救你?最新科学研究怎么说。.

11β-羟类固醇脱氢酶 1 型 (11β-HSD1)

定义

11β-HSD1 是一种在脂肪组织中表达的酶,能在局部将无活性的可的松转化为有活性的皮质醇,从而放大脂肪库内的糖皮质激素信号;它在内脏脂肪中的表达相对高于皮下脂肪,这可能会创造一种组织水平的微环境,从而促进脂质储存并导致类似于轻度库欣综合征的代谢功能障碍。.

为什么这很重要

该酶在分子水平上将慢性压力与内脏脂肪积聚联系起来,这与血液中的整体皮质醇水平无关。.

阅读:为什么腹部脂肪比你想象的更危险

12导联心电图

定义

常规心电图通过放置在四肢和胸部的十二个电极位置同时记录心脏的电活动;当在最大量运动时进行该检查时,它可以显示出静息状态下不可见的缺血性改变,例如ST段压低。.

为什么这很重要

理解为什么静息心电图可能会漏掉严重的血管阻塞,有助于解释为什么进行最大努力的负荷试验对运动员至关重要。.

资深运动员的心脏病:我是如何逆转动脉阻塞并在65岁打破世界纪录的

17β-雌二醇 (E2)

定义

雌激素中最强效且具生物活性的形式,主要由生殖年龄的卵巢滤泡产生;它作用于全身和大脑的雌激素受体以调节葡萄糖代谢、突触功能、情绪和血管张力,在围绝经期急剧下降。.

为什么这很重要

了解具体涉及哪种雌激素有助于解释为什么更年期会对大脑和心脏产生如此深远的影响,以及为什么激素疗法的配方不能互换。.

绝经 内分泌 心血管 风险

2018 ACC/AHA 胆固醇指南

定义

美国一项关于血胆固醇管理的主要临床实践指南将冠状动脉钙化(CAC)评分纳入决策辅助工具中;该指南建议,对于CAC评分为零的无症状中危人群,可暂缓他汀类药物治疗,除非存在糖尿病、主动吸烟或有早发性心血管疾病的强烈家族史。.

为什么这很重要

本指南是利用零冠状动脉钙化(CAC)评分来推迟或避免处方他汀类药物的主要临床实践权威依据。.

零的力量:没有钙 – 没有风险?

2019 ACC/AHA 初级预防指南

定义

美国心脏病学会和美国心脏协会联合发布的临床实践指南,涵盖预防首次心血管事件的策略,包括关于在一级预防中恰当使用和局限性标准风险计算器及影像学工具的建议。.

为什么这很重要

本指南规定了医生在常规心血管筛查中建议做什么和不做什么,这就是为什么理解其范围有助于患者更好地询问是否有必要进行进一步评估。.

双倍剂量:你的家谱是生物危险品吗?这里有拯救生命的信息

2020年ESC运动心脏病学指南

定义

2020年欧洲心脏病学会(ESC)运动心脏病学指南是欧洲心脏病学会的一份循证文件,就疑似或确诊心脏病的竞技运动员、休闲运动员以及老龄运动员的心血管筛查、危险分层和重返运动决策提供了建议。.

为什么这很重要

它为医生评估那些可能用高水平体能掩盖心血管病理的老年运动员设定了当前的临床标准。.

体质好如何掩盖心脏病发作

2024年NIA-AA修订标准

定义

2024年NIA-AA修订标准是美国国家老龄化研究所和阿尔茨海默病协会制定的诊断指南,该指南根据核心淀粉样蛋白和tau生物标志物的存在情况,在生物学上将阿尔茨海默病定义为独立于临床症状的疾病。.

为什么这很重要

文章明确探讨了这些标准,并以此论证:通过其下游生物标志物特征来定义阿尔茨海默病,与血管疾病作为该特征的上游病因是相容的。.

阿尔茨海默病其实始于你的动脉吗?

5-甲基四氢叶酸(5-MTHF)

定义

叶酸在血液中循环的具有生物学活性的形式,在同型半胱氨酸重新甲基化为蛋氨酸的过程中充当甲基供体;它是蛋氨酸合酶所使用的形式,在补充剂中作为'L-甲基叶酸'销售。'

为什么这很重要

理解这是活性叶酸形式,有助于解释为什么标准叶酸必须经过身体转化才能降低同型半胱氨酸。.

补充L-甲基叶 folate + 活性B族维生素降低同型半胱氨酸能否帮助预防动脉粥样硬化并减少斑块?

640排CT扫描仪

定义

一种先进的CT系统,其探测器宽度足够大(160毫米),可在单次旋转和单次心跳中采集整个心脏,从而消除了窄探测器所产生的图像拼接伪影,并将辐射剂量降至1毫西弗以下。.

为什么这很重要

文章认为,这项技术使纵向斑块追踪更加安全、更具实用性,从而支持了其在常规预防心脏病学中的潜在作用。.

一种无需手术透视心脏的新方法——预测心脏病发作的最佳途径

β-肾上腺素能反应性

定义

β肾 and 肾上腺素能反应性是指心脏通过β肾上腺素受体对肾上腺素及相关应激激素刺激的敏感性;衰老会降低这种敏感性,从而限制心脏在剧烈运动期间(即使是对受过高度训练的人群而言)的跳动速度和收缩力。.

为什么这很重要

β受体敏感性的下降是随着年龄增长导致最大心率下降的原因之一(无论体能状况如何),这为运动表现设定了一个生物学上限。.

体质好如何掩盖心脏病发作

β-羟基丁酸(βHB)

定义

脂肪代谢过程中产生的主要酮体;其血中浓度被用作酮症的主要生化标志物,无论该酮症是由禁食、极低碳水化合物饮食还是摄入外源性酮体补充剂所诱导。.

为什么这很重要

理解 βHB 有助于从化学层面真正理解'处于生酮状态'的含义,这对于评估与生酮有关的健康声称至关重要。.

生酮饮食 vs. 全食植物性饮食:关于运动表现、胰岛素敏感性、逆转心脏病和长寿的硬核证据是什么?

γ-丁基甜菜碱(γBB)

定义

γ-丁基甜菜碱(γBB)是当肠道细菌开始加工膳食左旋肉碱时在近端肠道中形成的主要代谢中间体;它的积聚速度比直接形成TMA的速度高出大约1000倍,并作为一个储库,在含肉餐食被消化很久之后仍能维持TMA和TMAO的产生。.

为什么这很重要

γBB 储库解释了为什么单次饮食调整可能无法迅速降低你的 TMAO 水平——肠道有一个可供调用的巨大储存库。.

牛排中的隐形毒素:肠道细菌如何引发心脏病

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ABCA1 / ABCG1(ATP结合盒式转运蛋白)

定义

巨噬细胞泡沫细胞中的膜蛋白,可将细胞内胆固醇转运至细胞外受体(如 apoA-I 和 HDL);它们在降脂过程中的激活是斑块消退的关键一步,能使富含脂质的细胞排出其胆固醇负荷。.

为什么这很重要

它们是分子'出口',允许被困在动脉壁细胞内部的胆固醇被清除——理解这些机制有助于阐明降脂疗法在细胞层面的工作原理。.

冠状动脉斑块消退、管腔悖论与运动员的血管重塑:整合药物与全食物植物性策略

腹主动脉瘤

定义

腹主动脉瘤是腹主动脉的扩张,主要由慢性炎症、动脉粥样硬化负荷以及失控的蛋白水解级联反应驱动,在此反应中,基质金属蛋白酶会破坏动脉壁的弹性蛋白和胶原蛋白支架。.

为什么这很重要

AAA 与冠状动脉疾病和外周动脉疾病有着相同的根本原因,因此,对于任何已经在控制心血管危险因素的人来说,它也是一个相关的风险。.

运动员的主动脉:健康的心脏还是隐蔽的定时炸弹?

无β脂蛋白血症

定义

无脂蛋白血症是一种罕见的常染色体隐性遗传病,由MTTP基因功能丧失突变引起,该基因是组装和分泌含ApoB脂蛋白所必需的;受影响个体的循环ApoB颗粒几乎完全缺失,总胆固醇通常低于30毫克/分升,LDL-C通常无法检测到。尽管存在严重的非心脏并发症(脂肪吸收不良…

为什么这很重要

这是最接近现实世界的证据,证明如果没有含ApoB的颗粒,动脉粥样硬化基本上不会发生。.

心脏病是一种选择吗?阻止斑块形成的‘零风险’秘诀

绝对风险

定义

绝对风险是指某事发生在您身上的真实几率,以百分比表示。如果您在未来十年内患心脏病的绝对风险是 12%,这意味着每 100 个与您相似的人中,大约有 12 人会患病。.

为什么这很重要

这与仅比较两个组别相对危险度不同。一种能将风险降低25%的药物听起来效果显著,但如果你初始的风险极小,那么现实中的收益也微乎其微。一定要询问绝对数字。.

为什么你‘正常’的胆固醇其实是一个警告信号

ACC/AHA 汇总队列方程

定义

ACC/AHA Pooled Cohort Equations(ACC/AHA 汇总队列方程)是由美国心脏病学会和美国心脏协会于 2013 年联合开发的一组心血管风险计算器,它利用年龄、性别、种族、胆固醇、血压、糖尿病和吸烟状况来评估首次动脉粥样硬化性心血管事件的十年风险。.

为什么这很重要

它们是美国使用最广泛的风险计算器,通常决定了谁会被建议接受他汀类药物治疗——了解它们的局限性有助于解释为什么有时需要进行额外的检测。.

医生没有为你开具的心脏检查

ACCELERATE 试验

定义

一项关于依折麦布(注:此处应为evacetrapib,即依塞曲匹布)的大型随机试验显示,尽管该药显著升高了HDL胆固醇并降低了LDL胆固醇,但未能减少高危患者的心血管事件,这进一步支持了这样一种观点:HDL-C是一个标志物,而不是具有因果关系的保护因素。.

为什么这很重要

这进一步说明了为什么椰子油提高高密度脂蛋白(HDL)的作用不具有显著的心血管益处。.

椰子油作为健康食品的神话:行业如何左右你的饮食!

协议

定义

ACCORD 是一项大型临床试验,旨在测试在 2 型糖尿病患者中非常激进地降低血糖是否能预防心脏病发作。.

为什么这很重要

事实并非如此,强化治疗组的死亡人数反而更多。从中得到的教训是,降低一个数值并不自动等于帮助患者——这一主题在整个心脏病学中屡见不鲜。.

为什么载脂蛋白B(ApoB)很重要?

血管紧张素转化酶抑制剂

定义

ACE(血管紧张素转化酶)抑制剂是一类通过阻断使血管变窄的酶来降低血压和减轻心脏工作负荷的药物。ACE抑制剂成为心梗后标准护理的一部分,并且是文章中提到的在初始冠心病死亡率开始下降之后才出现的治疗方法之一。.

为什么这很重要

ACE抑制剂说明了特效药物如何在心梗发作后依然能够提高生存率并防止复发,这代表了该疾病发病率下降过程中的'药物巩固'阶段。.

心血管疾病史

髋臼

定义

髋臼:骨盆上呈杯状的窝,股骨头嵌入其中形成髋关节;髋臼骨折会破坏该关节,并在康复期间严重限制承重和下肢功能。.

为什么这很重要

髋部骨折和盆腔损伤对心血管康复具有重要影响,特别是对于努力维持身体状态的老年运动员而言。.

Peter Megdal 于 2021 年 10 月 14 日创造了全国小时计时赛纪录

急性冠脉综合征

定义

急性冠脉综合征(ACS)是心肌血流量突然减少的一类疾病的总称——从不稳定型心绞痛到完全性心脏病发作——这是由斑块突然破裂或侵蚀引起的。.

为什么这很重要

确切的诊断取决于血液检查和心电图,但其根本事件是一样的:原本静静地存在于血管壁中的斑块破裂了。这就是为什么新出现或不断加重的胸痛需要当天进行评估,而不是采取观望态度。.

隐匿性梗死:MINOCA机制、诊断与管理的深入研究验证

ADAM17(脱落酶)

定义

一种金属蛋白酶,能够切割膜结合受体的胞外结构域,将其转化为可溶性循环形式;在白细胞介素-6 (IL-6) 信号传导的背景下,ADAM17 切割膜结合型 IL-6 受体 (mIL-6R) 以产生可溶性形式 (sIL-6R),从而在全身范围内实现更广泛的促炎性反式信号传导。.

为什么这很重要

ADAM17活性决定了有多少IL-6信号传导能够到达血管壁——这是脂质沉积是否会恶化为危险斑块的关键一步。.

阅读:基因彩票:为什么你不能指望自己“刀枪不入”

ADAPTABLE 试验

定义

ADAPTABLE 是一项针对 15,076 名已确诊动脉粥样硬化性心血管疾病患者的实用性随机对照试验,比较了每天 81 毫克与 325 毫克阿司匹林的疗效;结果发现两种剂量的患者在心血管结局或大出血方面没有显著差异,这支持将 81 毫克作为首选维持剂量。.

为什么这很重要

这是对两种最常见阿司匹林剂量规模最大的直接头对头比较,直接为患者和临床医生应该选择哪种剂量提供了依据。.

每日阿司匹林究竟是在夺走你的生命还是在拯救你?最新科学研究怎么说。.

适应性内膜增厚

定义

适应性内膜增厚是动脉内膜的一种正常、非病理性的局灶性增厚,发生于血管弯曲和分支处,是对血流紊乱的反应;其特征为蛋白聚糖-胶原基质中的平滑肌细胞,且与动脉粥样硬化病变不同,不涉及脂质积聚或炎性泡沫细胞浸润。.

为什么这很重要

理解这一区别有助于澄清为什么并非动脉壁的每一次增厚都是疾病——将其误分类为动脉粥样硬化在历史上夸大了患病率的估计。.

先天性疾病

ADH1B

定义

编码乙醇脱氢酶1B的基因,该酶负责乙醇代谢的第一步;ADH1B中的遗传变异(特别是rs1229984)会影响酒精分解的速度,并常在酒精与心血管风险的孟德尔随机化研究中被用作工具变量。.

为什么这很重要

它在孟德尔随机化中的应用使研究人员能够研究酒精的影响,而没有困扰观察性研究的生活方式混杂因素。.

半满的玻璃杯:为什么科学正向“有益心脏健康”的饮酒习惯挥手告别

脂肪因子

定义

脂肪因子是由脂肪细胞分泌的具有生物活性的分子(包括瘦素、脂联素、TNF-α和IL-6),它们作为激素或信号蛋白发挥作用,以调节全身的新陈代谢、胰岛素敏感性、炎症和能量平衡。.

为什么这很重要

了解脂肪组织能与其他器官进行化学通信,有助于解释过多的内脏脂肪是如何引发远离腹部的全身性疾病的。.

阅读:为什么腹部脂肪比你想象的更危险

脂联素

定义

脂联素是一种脂肪因子,通过激活AMPK来增强胰岛素敏感性并促进脂肪酸氧化;随着内脏脂肪的积聚,其循环水平会下降,这使得低脂联素成为心脏代谢风险的早期指标。.

为什么这很重要

脂联素水平为洞察代谢健康提供了一个体重测量完全无法比拟的窗口。.

阅读:为什么腹部脂肪比你想象的更危险

裁决

定义

裁决是指由独立委员会审查试验中报告的每个事件,并在不知晓患者接受何种治疗的情况下,判定实际发生情况的过程。.

为什么这很重要

它阻止了热情对结果的影响。一次医院就诊是否被算作心脏病发作,不应该取决于患者处于试验的哪个组别。.

如何避免英年早逝

晚期糖基化终产物

定义

AGEs是指蛋白质或脂肪与糖类或高温烹饪接触时形成的化合物;在高温烹调的肉类中,它们会与血管细胞上称为RAGE的受体结合,引发炎症级联反应。文章将其列为红肉中除TMAO外可能损害心血管健康的几种成分之一(与饱和脂肪和血红素铁并列)。.

为什么这很重要

它们说明了为什么将TMAO孤立为红肉中'唯一'有害成分的做法过于简化了复杂的饮食状况。.

红肉正在通过你的肠道杀死你吗?关于TMAO的大骗局

基督复临安息日会健康研究

定义

一系列长期前瞻性队列研究考察了基督复临安息日会信徒(该群体素食率较高)的健康结局;研究结果显示,与非素食者相比,纯素食者的2型糖尿病风险降低了62%,且该结果与体重无关。.

为什么这很重要

这些研究提供了一些最有力的流行病学证据,将植物性饮食与降低慢性病风险联系起来。.

营养学大辩论:原始人饮食法/生酮饮食/旧石器饮食与全食物植物性饮食对长寿和心脏病影响的循证现实

基督复临安息日会健康研究-2 (AHS-2)

定义

一项针对北美约96,000名基督复临安息日会信徒的大型前瞻性队列研究,在营养流行病学中备受重视,因为该人群吸烟率和饮酒率低,减少了主要的混杂行为因素,从而能够更准确地评估饮食模式对死亡率和疾病结局的影响。.

为什么这很重要

素食长寿益处所引用的许多证据都直接来自这个队列,因此了解它是什么有助于你判断这些说法的质量。.

素食主义真的能延年益寿吗?这是一个谎言吗?

有氧项目(100% 有氧)

定义

完全通过氧化代谢维持的运动强度,依赖于持续的氧气供应来产生三磷酸腺苷(ATP);自行车一小时世界纪录就是这样分类的,因为任何向无氧途径的大幅转变都会迅速耗尽能量储备并损害表现。.

为什么这很重要

有氧耐力是心血管健康的核心指标,也是长期心脏病预后的一项预测指标。.

阅读:彼得·梅格达尔 2022 年一小时纪录挑战

有氧运动

定义

有氧运动是一种持续的活动,能让你的呼吸在一段时间内加深加快,例如快走、骑自行车、游泳或慢跑。.

为什么这很重要

它能改善体能、血压、血糖以及血管功能。这是你能为健康做的最好的事情之一。但它并不能明显降低载脂蛋白B(ApoB)颗粒的数量,这就是为什么身体非常好的人仍然会有斑块。.

现代医学能拯救一个久坐不动的人吗?持续40年的三胞胎实验

有氧糖酵解

定义

细胞(包括神经元)在有氧条件下分解葡萄糖以产生ATP能量的代谢过程;雌激素在大脑中促进这一高效途径,而其在绝经期的下降可能会迫使大脑转向效率较低的燃料来源。.

为什么这很重要

这是雌激素下降时大脑失去的具体能量机制,这使其成为理解更年期脑雾的核心。.

绝经 内分泌 心血管 风险

有氧间歇训练

定义

一种交替进行短时间高强度运动与主动恢复期的结构化锻炼方法——例如,近乎最大努力的高强度运动四分钟,随后进行三分钟的轻松运动——临床研究表明,该方法在减少房颤负荷和提高最大摄氧量方面比持续稳态训练更有效。.

为什么这很重要

AIT是接受过治疗房颤患者的首选运动处方,因为它既能保持体能,又能避免导致进一步心房瘢痕形成的慢性容量负荷。.

接受过治疗的心房颤动大师级运动员(50岁以上)的心血管风险管理与训练调整:专家报告

空气动力阻力

定义

空气阻力;在高原地区,较低的空气密度会减小空气动力阻力,这就是为什么尽管氧气较少,自行车室内场地的纪录却经常在高海拔赛道上打破的原因。.

为什么这很重要

它解释了选择阿瓜斯卡连特斯作为尝试地点的战略选择——阻力更小意味着在相同的功率输出下速度更高。.

精英老将自行车手的生理优化与寿命表现建模

空气动力学家

定义

空气动力学专家(专门分析并优化运动员及其装备(包括骑行姿势、头盔、紧身衣和车轮)的风阻外形,以最大限度地减少空气阻力,并在给定的功率输出下实现最高速度的专家)。.

为什么这很重要

在一小时计时赛中,空气动力学阻力通常是决定行驶距离的最大单一因素,这使得该因素在破纪录的尝试中处于核心地位。.

彼得·梅格达尔 (Peter Megdal) 登上《戴德姆时报》

房颤负担

定义

房颤负荷:指一个人处于心房颤动状态的时间占监测总时间的比例或总持续时间,通常以百分比或时间长度表示;导管消融术旨在减少房颤负荷,即使不能完全消除房颤。.

为什么这很重要

帮助读者理解射频消融的成功往往是部分的,而非绝对的。.

问答:房颤、耐力训练与消融术——运动员需要了解的知识

房颤复发

定义

在成功维持心律控制一段时间后,房颤再次发作,无论该心律控制是通过消融术还是药物治疗实现的;在耐力运动员中,单次消融术后的复发率约为40%,而持续性心房扩大和纤维化是主要预测因素。.

为什么这很重要

复发风险是文章为考虑消融手术的运动员所探讨的核心临床问题。.

问答:房颤、耐力训练与消融术——运动员需要了解的知识

阿特斯顿单位

定义

阿加特森单位是用于量化CT扫描中冠状动脉钙化的标准化评分单位,根据钙化病变的密度 and 面积计算得出;零分表示未检测到钙化斑块,而300分或更高(仅在英国大师研究的运动员组中发现)则反映了重度钙化。.

为什么这很重要

它们是报告钙化扫描结果的通用货币,因此了解这一分值标准有助于您理解自己得分的含义。.

巅峰体能与隐形钙化:运动员的斑块积聚悖论

年龄调整死亡率

定义

年龄调整死亡率是一种经过统计学修正的死亡率,因此不同人口之间——或同一人口在不同时期——的年龄结构差异不会扭曲比较结果。它回答了这样一个问题:如果年龄构成保持不变,死亡率会发生变化吗?

为什么这很重要

由于心脏病发作导致的死亡在老年人中更为常见,如果不进行这一调整,单纯比较几十年来原始死亡人数会产生误导——这正是该文章得出“81%下降”这一结论的依据。.

心血管疾病史

陈年大蒜提取物

定义

一种通过生大蒜长期低温陈化制成的标准化补充剂,可浓缩水溶性有机硫化合物;随机CT成像试验表明,它能减少代谢综合征患者的低衰减(质软、易破裂)冠状动脉斑块。.

为什么这很重要

目前,aged garlic extract (AGE) 在人类身上拥有比纳豆激酶更直接的斑块成像证据,对于任何在评估补充剂选择的人来说,它是一个有用的比较基准。.

纳豆激酶与心血管斑块:人体研究的真实情况

脂蛋白聚集

定义

在动脉粥样硬化的背景下,聚集是指含ApoB的脂蛋白颗粒在被动脉壁中的蛋白多糖滞留后发生 clump 样集结,这一步骤会触发巨噬细胞吞噬并形成泡沫细胞。.

为什么这很重要

理解聚集作用将斑块形成的解释从简单的'氧化脂肪'转变为更具证据支持的滞留与凝聚机制。.

胆固醇:它有什么用?

人工智能-定量CT

定义

AI-QCT 是一种先进的冠状动脉 CT 分析技术,它利用人工智能来量化和表征斑块成分(包括非钙化斑块和低衰减斑块),其能力超出了标准 CAC 评分的检测范围。.

为什么这很重要

它解释了'超级扫描'技术,即使在CAC(冠状动脉钙化)评分为零的情况下,也能发现危险的软斑块。.

雌激素能保护女性动脉免受斑块形成吗?

AIM-HIGH 试验

定义

一项在已确诊心血管疾病患者中将缓释烟酸添加到强化他汀类药物治疗中的随机试验;尽管烟酸提高了 HDL-C(高密度脂蛋白胆固醇),但并未减少心血管事件,这支持了 HDL-C 升高不具有因果性心脏保护作用的证据。.

为什么这很重要

另一个证明椰子油升高高密度脂蛋白(HDL)的特性不应被解读为具有心脏保护作用的证据。.

椰子油作为健康食品的神话:行业如何左右你的饮食!

空气密度与空气动力学阻力

定义

空气密度是指单位体积内空气的质量;在高海拔或高温环境下,空气密度较低,这会减小骑行者必须克服的气动阻力,从而在相同的功率输出下实现更高的速度。.

为什么这很重要

高海拔自行车赛场有利于冲击纪录,原因之一是高空空气动力学阻力较小,这说明了环境物理学如何与心血管输出相互作用。.

Peter Megdal 于 2021 年 10 月 14 日创造了全国小时计时赛纪录

酒精

定义

酒精是啤酒、葡萄酒和烈酒中使其具有成瘾性的成分。.

为什么这很重要

多年来,人们一直被告知每天喝一杯葡萄酒对心脏有益。更新、更完善的研究推翻了这一观点。适度饮酒的人更健康是因为其他原因。酒精会升高血压和甘油三酯,而且没有医生会为了保护心脏而建议饮用任何数量的酒精。.

半满的玻璃杯:为什么科学正向“有益心脏健康”的饮酒习惯挥手告别

酒精性心肌病

定义

酒精性心肌病是一种由长期大量饮酒(通常定义为每天饮用约80克乙醇,持续至少五年)引起的扩张型心肌病。在此病中,持续的乙醇毒性会导致心肌无力和扩大;与心力衰竭的许多其他病因不同,酒精性心肌病在持续戒酒后通常往往具有显著的可逆性。.

为什么这很重要

戒酒后的可逆性提供了一个罕见的例证,证明仅通过改变生活方式就能实现有意义的心脏功能恢复。.

半满的玻璃杯:为什么科学正向“有益心脏健康”的饮酒习惯挥手告别

ALK1(激活素受体样激酶1)

定义

激活素受体样激酶 1 是一种内皮受体,与 SR-B1 一起参与载脂蛋白 B 免疫复合物/含 apoB 的脂蛋白颗粒穿过内皮屏障进入动脉内膜的受体介导的转运过程,这是一个浓度依赖性的过程,代表了动脉粥样硬化发生的早期阶段。.

为什么这很重要

它确定了一个特定的生物学通道,血液中的颗粒物通过该通道进入动脉壁,这进一步证实了为什么随着时间的推移颗粒物浓度至关重要。.

载脂蛋白B:更长、更高、更糟

全因死亡率

定义

全因死亡率是指死于任何原因的死亡,而不仅仅是心脏病——这是研究能够衡量的最广泛、最难作假的结局。.

为什么这很重要

某些治疗方法只能改善狭窄的心血管指标,而对降低其他任何原因导致的总体死亡率毫无帮助,甚至可能使其恶化。一项能够改善全因死亡率的临床试验,其分量要重于仅报告心血管特异性终点的试验。.

牛排中的隐形毒素:肠道细菌如何引发心脏病

α-亚麻酸 (ALA)

定义

α-亚麻酸(ALA,18:3n-3)是一种源自植物的ω-3多不饱和脂肪酸,主要存在于菜籽油和亚麻籽中; 它在化学结构上与大多数其他种子油中占主导地位的ω-6亚油酸截然不同,这也是为什么菜籽油不被视为可与高亚油酸油互换的原因。.

为什么这很重要

将菜籽油与其他植物油归为一类,却不承认其欧米伽-3脂肪酸的含量,歪曲了营养对比。.

阅读:seed oils 是否健康,是真是假?

高海拔舱(缺氧帐篷)

定义

一种密封的睡眠舱,通过降低舱内氧气分压来模拟高海拔地区的低氧环境;运动员利用它来刺激红细胞生成并提高携氧能力,而无需长期移居高海拔地区。.

为什么这很重要

改善氧气输送直接影响心血管效率和耐力表现,这使得高原模拟成为注重心脏健康的运动员的实用训练工具。.

Peter Megdal 于 2021 年 10 月 14 日创造了全国小时计时赛纪录

高海拔训练(阿瓜斯卡连特斯)

定义

一种竞技策略,即耐力运动员在高海拔地区进行训练——本例中是在墨西哥阿瓜斯卡连特斯的比森特纳里奥自行车馆,海拔约1,800米——以激发机体适应性变化,例如增加红细胞生成,从而提升氧气输送能力。.

为什么这很重要

高海拔生理学对于理解为何即使是精英级、训练有素的运动员也可能患有未被发现的冠状动脉疾病具有重要意义。.

阅读:《重新思考心脏健康:彼得·梅格达尔如何将一纸诊断转化为推动变革的使命》

高海拔训练 / 高海拔自行车馆

定义

在高海拔地区参赛或训练——例如位于阿瓜斯卡连特斯的比森特纳里奥自行车馆(海拔约6,000英尺)——那里空气稀薄,空气动力学阻力较小,使自行车手每小时能骑行的距离比在海平面时更远,但同时由于氧气供应不足,也会导致疲劳感加剧。.

为什么这很重要

梅格达尔特意选择了一处高海拔赛场,既是为了利用空气阻力较小的优势,同时也为了控制高海拔比赛带来的生理负担。.

彼得·梅格达尔 (Peter Megdal) 登上《戴德姆时报》

Alu转座子

定义

Alu元件是一种短小、重复的'跳跃基因',在灵长类动物基因组中大量存在,能够插入到新的基因组位置;Alu元件插入CMAH基因座导致了92个碱基对的缺失,从而使人类祖先的Neu5Gc合成永久失活。.

为什么这很重要

有研究提出,由该可移动DNA序列引发的一次随机基因组事件,是人类特有的、与红肉相关的心脏病易感性的根本原因。.

你的免疫系统在与你的牛排开战吗?

阿尔茨海默病

定义

阿尔茨海默病是一种会缓慢破坏记忆力和思维能力的脑部疾病。.

为什么这很重要

过去,这种疾病一直被视为与心脏病完全无关。最新研究表明,两者之间的关联比我们想象的要密切,包括携带胆固醇的颗粒相同,以及对供应大脑的微小血管造成的损害。.

阿尔茨海默病其实始于你的动脉吗?

AMORIS 研究

定义

AMORIS(载脂蛋白死亡风险)研究是一项大型瑞典前瞻性队列研究,该研究测定了载脂蛋白B(ApoB)及其他脂质成分,并证实ApoB比低密度脂蛋白胆固醇(LDL-C)更能预测心血管事件,特别是在这两项指标不一致的情况下。.

为什么这很重要

AMORIS 是证明计算致动脉粥样硬化颗粒比单纯测量胆固醇质量更重要的基础研究之一。.

胆固醇大谎言:揭露饮食行业的有组织否认

AMPK(AMP激活的蛋白激酶)

定义

AMP激活的蛋白激酶是一种细胞能量传感器,一旦被激活,便会抑制胆固醇和脂肪酸的合成,并发挥抗炎作用;有研究提出,贝普多酸通过激活这一通路,发挥出超越单纯降低低密度脂蛋白(LDL)水平的作用机制。.

为什么这很重要

这被视为贝普多酸降低高敏C反应蛋白(hsCRP)水平的潜在解释,其作用机制与他汀类药物不同。.

雌激素能保护女性动脉免受斑块形成吗?

AMY1 基因

定义

编码唾液淀粉酶的基因——这种酶在口腔中启动淀粉消化;人类携带该基因的多个拷贝,而2024年发表在《科学》杂志上的一项研究发现,该基因的复制可追溯至近80万年前,这表明早在农业出现之前,淀粉消化就已经是人类的一种核心代谢策略。.

为什么这很重要

理解我们处理碳水化合物的进化能力,有助于解释为什么一刀切的低碳水或纯肉饮食方案可能不符合人类的生物学特性。.

阅读:通过饮食治疗心脏病不仅是一种现代痴迷——它更是一种有数百万年进化历史支撑、并借助现代科学最先进手段的实践。

淀样蛋白假说

定义

淀粉样蛋白假说长期以来一直是阿尔茨海默病的主导理论,该理论认为大脑中β-淀粉样蛋白斑块的异常积聚是神经退行性变和认知能力下降的主要引发原因。.

为什么这很重要

理解这一假说至关重要,它是评估血管疾病(而非淀粉样蛋白)是否可能是阿尔茨海默病更早、上游驱动因素的基础背景。.

阿尔茨海默病其实始于你的动脉吗?

合成代谢抵抗

定义

合成代谢抵抗是指老年人的肌肉对蛋白质的反应变差。年轻人吃适量的蛋白质就能增长肌肉。老年人吃同样分量的蛋白质,几乎不会增长肌肉。.

为什么这很重要

这就是为什么随着年龄的增长,蛋白质的需求量不仅没有减少,反而增加了,特别是对于试图保持肌肉的老年运动员来说。.

是什么在65岁前夺走你的生命,却可能在65岁后拯救你——蛋白质的悖论

心绞痛

定义

心绞痛是当心肌得不到充足氧气时发生的不适。人们将其描述为压迫感、紧缩感、挤压感或灼痛感,这种不适感可能会扩散到手臂、颈部或下巴。.

为什么这很重要

并非所有人都会出现典型的胸痛。有些人只会感到气短、异常疲倦或胃部不适。身体非常健康的人有时甚至几乎完全没有任何感觉,而这正是他们的疾病危险所在。.

运动如何阻断疼痛:运动员心脏的致命秘密

血管生成

定义

血管新生是指由组织缺氧主要驱动的、从现有微血管萌发出新毛细血管的过程,该过程通过HIF-1α介导的血管内皮生长因子(VEGF)转录来实现。由于毛细血管缺乏肌壁,它们只能改善局部的氧气弥散,而无法代偿大的冠状动脉中的严重阻塞。.

为什么这很重要

理解血管生成和动脉生成的区别可以阐明为什么在剧烈运动期间,仅仅生长新的微小血管并不足以保护心脏。.

运动如何阻断疼痛:运动员心脏的致命秘密

血管造影术

定义

血管造影是一项检查,医生将一根细管插入您的动脉并注射造影剂,以便在X光下显示动脉内部的情况。.

为什么这很重要

它显示了血液流过的开放通道。它的最大缺点是无法显示动脉壁——而斑块正是在动脉壁中生长的。在血管造影上,一根动脉可能看起来几乎正常,但实际上已经病得很重。.

健美、迅捷且险些丧命:世界级自行车手如何发现隐匿性心脏病

血管造影消退

定义

血管造影消退是指在冠状动脉X射线成像中观察到的冠状动脉阻塞尺寸的可测量减小;文章引用了“生活方式心脏试验”(Lifestyle Heart Trial),证明强化的以植物为主的饮食和生活方式改变能够产生这种效果。.

为什么这很重要

它是对文章中所描述的'缩小中的阻塞物'这一现象的科学术语,为读者提供了一个针对这一临床重要现象的精确标签。.

治疗生物学而非管道:心脏病学激进的新方法

血管成形术

定义

血管成形术是一种在狭窄的动脉内部充气一个小气囊以撑开阻塞物的医疗程序。通常会留置一个支架以保持其畅通。.

为什么这很重要

它在缓解心脏病发作时的症状和挽救生命方面非常有效。它做不到的是治愈疾病本身,这种疾病蔓延到你的所有动脉,而不仅仅是那个得到治疗的地方。.

治疗生物学而非管道:心脏病学激进的新方法

血管生成素样蛋白3

定义

ANGPTL3是一种能减慢血液中富含甘油三酯的颗粒分解的蛋白质。.

为什么这很重要

天生携带缺陷拷贝的人甘油三酯低、低密度脂蛋白低,且心脏病发病率低——这使其成为一个显而易见的药物靶点。依维库单抗能阻断该靶点,并被用于治疗最严重的遗传性胆固醇疾病。.

心血管保护的遗传架构

冠状动脉畸形

定义

冠状动脉畸形是一种先天性畸形,即冠状动脉起自错误的位置或走行路径异常;在剧烈运动时,该血管可能会受压,从而减少流向心肌的血液并引发缺血或致命性心律失常。.

为什么这很重要

它是青年运动员运动中猝死的主要结构性原因,心电图对其检出率较低,需通过影像学检查进行诊断。.

如何避免英年早逝

拮抗多效性

定义

拮抗多效性是一种进化假说,指某个基因或生物性状在生命早期带来生存或繁殖优势,但在后期却变得有害;将其应用于心血管疾病,则表明在远古环境中可能提供益处的脂质转运系统,在现代长期热量充足的寿命下变得不利。.

为什么这很重要

它为人类在生物学上易患动脉粥样硬化提供了一种解释,尽管这种疾病最终会导致死亡。.

先天性疾病

抗HMGCR免疫介导性坏死性肌病

定义

抗HMGCR免疫介导的坏死性肌病是一种罕见的自身免疫性肌肉疾病,在每10万名他汀类药物使用者中每年约有2人发病,患者体内会产生针对HMG-CoA还原酶的抗体;与普通他汀类药物引起的肌痛不同,该病在停药后会持续存在并恶化,需要进行免疫抑制治疗。.

为什么这很重要

这种状况常被误认为是普通的他汀类药物引起的肌肉痛,但单纯停用他汀类药物并不能解决问题——早期识别可以防止严重的永久性肌肉损伤。.

我应该服用降胆固醇药吗?当然应该。.

抗血栓特性(酒精的)

定义

适度饮酒能够通过降低纤维蛋白原水平和减少血小板反应性等机制来减少血栓形成;虽然这可能会略微降低缺血性中风的风险,但同样的抗凝血作用却会增加出血性中风的风险,这说明了酒精具有双刃剑般的心血管特性。.

为什么这很重要

理解这种此消彼长的权衡有助于解释为什么某种中风的任何表面益处都会以增加另一种中风的风险为代价。.

半满的玻璃杯:为什么科学正向“有益心脏健康”的饮酒习惯挥手告别

抗凝血剂

定义

抗凝剂通过干扰凝血蛋白来降低血液的凝固能力。华法林和阿哌沙班就是其中的例子。.

为什么这很重要

它是一种与阿司匹林不同的工具,阿司匹林作用于血小板。抗凝剂用于心房颤动和静脉血栓;在需要另一种药物的地方使用其中一种,会使患者得不到充分的保护。.

现代医学能拯救一个久坐不动的人吗?持续40年的三胞胎实验

抗高血压药

定义

降压药是任何用于降低高血压的药物。该文章将自20世纪70年代起被广泛使用的降压药与他汀类药物区分开来,指出在可用他汀类药物治疗之前很久,降压药就已经对冠心病死亡率的下降做出了贡献。.

为什么这很重要

通过降压药控制血压是预防心脏病发作和中风最有循证依据的方法之一,这使得人群血压控制情况的恶化成为近期进展停滞令人担忧的关键原因。.

心血管疾病史

抗氧化剂

定义

抗氧化剂是一种能够清除体内有害分子的物质。维生素E和β-胡萝卜素就是其中的例子。.

为什么这很重要

这个理论听起来很棒,抗氧化剂药丸也曾流行多年。但当研究人员真正在大型试验中对它们进行测试时,它们并未能预防心脏病发作,甚至有少数似乎还会造成危害。这很好地提醒了我们:一个听起来合情合理的想法仍然必须经过检验。.

胆固醇:它有什么用?

抗栓试验者协作组

定义

'抗血栓试验协作组”是一项具有里程碑意义的个体受试者荟萃分析,整合了主要阿司匹林试验的数据; 研究发现,阿司匹林在初级预防和二级预防中对血管事件的相对降低比例相似,但在初级预防中的绝对获益要小得多——约为每年0.06%——这是因为基线事件发生率要低得多。.

为什么这很重要

这项分析是为什么对于有和没有确诊心脏病的人群,阿司匹林的推荐建议存在如此大差异的统计学基础。.

每日阿司匹林究竟是在夺走你的生命还是在拯救你?最新科学研究怎么说。.

抗病毒药物(奈玛特韦/利托那韦 — Paxlovid)

定义

一种将奈玛特韦和利托那韦结合在一起的处方口服抗病毒药物,可抑制SARS-CοV-2复制;通常在感染初期开处方使用,以减轻COVID-19的严重程度和病程,包括用于有心血管疾病等基础疾病的患者。.

为什么这很重要

心血管疾病患者感染 COVID-19 的风险升高,这使得抗病毒治疗方案尤为重要。.

阅读:彼得·梅格达尔 2022 年一小时纪录挑战

主动脉

定义

主动脉是你体内最大的动脉。它将血液从心脏输送出来,向下穿过胸腔和腹腔,向各处分发血管分支。.

为什么这很重要

由于它承受着巨大的压力,它可能会扩张、随年龄增长而变硬,或者出现膨出。在运动员中,主动脉通常比平均水平稍大,这就引发了关于什么才算正常的问题。.

运动员的主动脉:健康的心脏还是隐蔽的定时炸弹?

主动脉顺应性

定义

主动脉在收缩期扩张、在舒张期回缩的能力,充当平缓脉动性血流的压力缓冲器;随着缺乏运动或年龄增长导致的胶原蛋白交联和纤维化使动脉壁变硬,其顺应性随之降低。.

为什么这很重要

主动脉顺应性的丧失是本文所讨论的心血管老化的根本机械原因,通过持之以恒的锻炼可以部分恢复。.

你的心脏比你更老吗?逆转心血管年龄的科学

主动脉夹层

定义

主动脉夹层是一种危及生命的紧急情况,其特征是主动脉内膜撕裂使血液进入中膜层裂开,从而形成一个假腔;其临床表现为突发、剧烈的胸部或背部落撕裂样疼痛,自发病第一秒起即达到最严重程度,并可能导致双侧上肢脉搏不对称。.

为什么这很重要

对于患有未诊断的主动脉疾病的运动员来说,识别撕裂性疼痛与普通运动酸痛的区别可能意味着生死之别。.

运动员的主动脉:健康的心脏还是隐蔽的定时炸弹?

主动脉根部

定义

主动脉根部,即紧邻心脏上方从左心室发出的主动脉部分;这是早期动脉粥样硬化斑块形成的好发部位,在心脏病小鼠模型中常被常规测量以量化斑块负荷。.

为什么这很重要

在主动脉根部测量到的斑块是判断动脉粥样硬化进展严重程度的标准基准。.

问答:日常微塑料是否在助长心脏病?

主动脉瓣狭窄

定义

主动脉瓣狭窄是主动脉瓣(心脏的主要流出道瓣膜)的狭窄或硬化,会阻碍血液从左心室流入主动脉;升高的脂蛋白(a)被认为是钙化性主动脉瓣狭窄的第二大主要诱因。.

为什么这很重要

这表明 Lp(a) 对心脏的危害不仅限于动脉,这使得 Lp(a) 检测对于关注瓣膜健康的人群也具有相关性。.

胆固醇:它有什么用?

主动脉壁应力

定义

主动脉壁应力是作用于主动脉壁单位面积上的机械张力,由跨壁压、血管半径和壁厚计算得出;对胸主动脉疾病患者的心脏磁共振研究测量得出,在中等强度有氧运动期间,峰值主动脉壁应力为 257–323 kPa,远低于 850–1,200 kPa 的破裂阈值。.

为什么这很重要

AWS是决定动脉瘤样主动脉在任何给定水平的体力活动期间距离机械衰竭有多近的关键可测量变量。.

运动员的主动脉:健康的心脏还是隐蔽的定时炸弹?

主动脉病变

定义

主动脉病变是一个广泛的临床术语,涵盖任何损害主动脉壁结构完整性或功能的疾病过程,包括诸如腹主动脉瘤(AAA)等炎症-动脉粥样硬化性疾病,以及马凡综合征等遗传性结构性疾病。.

为什么这很重要

患有未确诊的主动脉病变的运动员在进行剧烈运动时面临着独特的风险,这些风险对于主动脉同样扩大的健康个体来说是不存在的。.

运动员的主动脉:健康的心脏还是隐蔽的定时炸弹?

载脂蛋白(a)尾部

定义

附着于脂蛋白(a)颗粒低密度脂蛋白(LDL)核心的大糖蛋白链,其结构与纤溶酶原高度相似,从而抑制人体天然的溶栓系统,并在Lp(a)的致动脉粥样硬化和促炎作用之外,增加血栓形成的风险。.

为什么这很重要

它解释了脂蛋白(a)'三重威胁'中的第三个方面——除了携带胆固醇和氧化磷脂外,它还会积极干扰血栓的分解。.

炎症、脂蛋白与以低密度脂蛋白(LDL)为中心的时代的终结

载脂蛋白B

定义

载脂蛋白B(ApoB)是一种存在于每个可能卡在动脉壁并导致斑块形成的胆固醇颗粒外侧的蛋白质。其中每一个颗粒都恰好携带一个ApoB。.

为什么这很重要

这种一一对应的规则正是它如此有用的原因。测量 ApoB 计算的是颗粒的数量。而标准胆固醇测试则是测量颗粒内部携带的物质,如果你的颗粒异常空洞或充满,这可能会产生误导。.

为什么载脂蛋白B(ApoB)很重要?

载脂蛋白B不一致性

定义

不一致是指载脂蛋白B(ApoB)和低密度脂蛋白(LDL)胆固醇给出了两种不同的结果。你的LDL看起来正常,但颗粒数很高——或者情况相反。.

为什么这很重要

当您的颗粒携带的胆固醇比平时少时,就会发生这种情况,因此需要更多的颗粒才能在化验报告上凑出相同的数值。这在胰岛素抵抗或糖尿病患者中尤为常见。当这两项结果不一致时,ApoB 才是能追踪您实际风险的指标。.

不要再迷信低密度脂蛋白(LDL)!关于载脂蛋白B(ApoB)、胰岛素抵抗与糖尿病的真相

APOB R3500Q 奠基者变异

定义

APOB R3500Q(p.Arg3527Gln)创始变异是APOB基因中的一种突变,在宾夕法尼亚州老派阿米什人中的携带率约为12%——远高于其在欧洲白人人群中0.1–0.4%的流行率 ——该突变会导致家族性ApoB-100缺陷,并自出生起即出现持续升高的低密度脂蛋白胆固醇(LDL-C)水平。.

为什么这很重要

该变异作为一个自然实验表明,终身低密度脂蛋白(LDL)升高会导致冠状动脉钙化负担显著增加,即使在生活方式健康且具有良好遗传背景的人群中也是如此。.

基因好能战胜血脂差吗?

载脂蛋白B-100

定义

ApoB-100是存在于LDL、VLDL、IDL和残粒脂蛋白上的全长载脂蛋白B;其带正电荷的氨基酸结构域与动脉壁中带负电荷的蛋白聚糖侧链发生离子结合,从而将颗粒物理性地 atrap(截留)在内膜中并启动斑块形成。.

为什么这很重要

正是这种分子'钩子'将有害颗粒锁定在动脉壁内——理解这一点就能解释为什么颗粒数量比单纯的胆固醇重量更重要。.

年轻时(20多岁和30多岁)胆固醇高,即使日后降下来了,以后也会引发心脏病发作吗?

载脂蛋白B-48

定义

ApoB-48 是载脂蛋白 B 的一种截短同工 isoform,在肠道中产生,专一性地存在于乳糜微粒及其残余颗粒上;与 ApoB-100 不同,它在空腹状态下不会被标准临床 ApoB 检测所测得,这意味着常规的 ApoB 检测反映的是来自肝脏的脂蛋白所带来的致动脉粥样硬化颗粒负荷,而不是饮食脂肪的吸收。.

为什么这很重要

了解这种同工异构体的存在有助于弄清楚标准 ApoB 血液检测的统计范围(包含什么以及不包含什么),从而让您能够准确解读检测结果。.

年轻时(20多岁和30多岁)胆固醇高,即使日后降下来了,以后也会引发心脏病发作吗?

含载脂蛋白B的颗粒

定义

脂蛋白——包括 LDL、IDL、VLDL 及其残粒——在其表面各自携带一个载脂蛋白 B 分子;颗粒数量(而不仅仅是胆固醇质量)是动脉粥样硬化的关键驱动因素,因为每个颗粒都可能滞留在动脉壁中。.

为什么这很重要

这篇文章反复解释,生酮饮食带来的代谢'胜利'并不能抵消 apoB/LDL 的升高,这使得这一概念成为生酮饮食与全植物全食物饮食(WFPB)对比的核心。.

生酮饮食 vs. 全食植物性饮食:关于运动表现、胰岛素敏感性、逆转心脏病和长寿的硬核证据是什么?

载脂蛋白B年数

定义

ApoB-years(载脂蛋白B年)是一个提出的研究指标,表示随时间推移累积的载脂蛋白B暴露量,以mg/dL·年为单位,即ApoB对年龄曲线下的面积;旨在比任何单次测量更直接地捕捉综合致动脉粥样硬化颗粒负荷,但尚未被验证为临床工具或治疗阈值。.

为什么这很重要

理解终生微粒暴露——而不仅仅是今天的数值——会加剧斑块积聚,这重新定义了为什么早期预防至关重要。.

载脂蛋白B:更长、更高、更糟

载脂蛋白B/载脂蛋白A1比值

定义

一项脂质风险指标,通过比较载脂蛋白B(ApoB,反映所有致动脉粥样硬化颗粒)与载脂蛋白A1(ApoA1,反映高密度脂蛋白,即主要的胆固醇逆转运颗粒)的浓度得出;在INTERHEART研究中被用作血脂异常的替代指标,其心肌梗死的优势比(odds ratio)为3.43,是所研究的所有单一危险因素中人群归因风险最高的指标。.

为什么这很重要

它将'坏'颗粒负荷和'好'颗粒容量合二为一,用单一数字呈现,比单纯的低密度脂蛋白胆固醇(LDL-C)更全面地反映脂质相关风险。.

载脂蛋白B、脂蛋白(a)与C反应蛋白在动脉粥样硬化进展中的综合动力学

载脂蛋白C3

定义

APOC3是编码一种蛋白质的基因,该蛋白质会阻止血液中富含甘油三酯的颗粒被清除。.

为什么这很重要

清除得越少,通关速度就越快。携带天然破损副本的人甘油三酯水平较低,心脏病发作次数也较少,这强有力地证明了这些颗粒是在造成危害,而不仅仅是随行。.

心血管保护的遗传架构

载脂蛋白E

定义

APOE 是一种拥有三种常见版本的基因,分别标记为 E2、E3 和 E4。它控制肝脏清除残留脂肪颗粒的效率。.

为什么这很重要

E4版本会提高胆固醇和阿尔茨海默病的风险,这是将心脏病与脑部疾病联系起来的线索之一。了解你的基因型并不会大大改变治疗方案,但它可以解释原本令人费解的血脂模式。.

阿尔茨海默病其实始于你的动脉吗?

APOE ε4 等位基因

定义

APOE ε4 等位基因是载脂蛋白 E 基因的一个常见变异,也是目前已知的晚发型阿尔茨海默病最大的常见遗传危险因素;它能促进脑血管损伤和血脑屏障破坏,这一作用与其对淀粉样蛋白和 tau 蛋白的影响无关。.

为什么这很重要

文章认为,APOE ε4主要通过血管途径发挥作用,在系统性脂蛋白生物学与脑部疾病之间架起桥梁,并支持了更广泛的血管假说。.

阿尔茨海默病其实始于你的动脉吗?

载脂蛋白

定义

载脂蛋白是附着在你血液中脂质运载颗粒上的一种蛋白质。由于脂肪和水不相溶,这些蛋白质就像一层包装,让脂肪能够在血液中安全地运输。.

为什么这很重要

不同的载脂蛋白标记不同种类的颗粒。ApoB 标记有害的颗粒。ApoA-I 标记高密度脂蛋白(HDL)。知道你在测量哪种载脂蛋白,就等于知道你在数哪种颗粒。.

为什么载脂蛋白B(ApoB)很重要?

载脂蛋白 A-I

定义

载脂蛋白 A-I 是 HDL 颗粒的主要结构蛋白,大致相当于有害颗粒中载脂蛋白 B (ApoB) 的作用。.

为什么这很重要

它承担着从细胞中收集胆固醇的实际工作。测量它可以比单凭胆固醇数值更好地反映高密度脂蛋白(HDL)的功能,尽管事实证明这两者都无法用作治疗靶点。.

健美、迅捷且险些丧命:世界级自行车手如何发现隐匿性心脏病

载脂蛋白E (ApoE)

定义

载脂蛋白E是一种蛋白质,它是大脑内部主要的胆固醇载体,通过一个完全独立于血浆脂蛋白的大脑特异性脂蛋白系统,将胆固醇从合成胆固醇的星形胶质细胞输送到神经元。.

为什么这很重要

它在大脑特异性胆固醇转运中的作用,不同于它在血浆脂代谢和阿尔茨海默病风险中广为人知的作用。.

您的细胞会自行合成胆固醇——那为什么您的血液里到处都是它?

花生四烯酸

定义

花生四烯酸是一种长链欧米茄-6脂肪酸,在体内由亚油酸转化而成;它是被称为类花生酸的促炎和抗炎信号分子的前体,这意味着它在炎症中的作用比简单的'种子油引发炎症'这一说法所暗示的要复杂得多。.

为什么这很重要

它是连接种子油与心脏病的假想炎症途径中的关键中间体,因此了解它的实际作用有助于阐明为什么该理论并不完整。.

阅读:seed oils 是否健康,是真是假?

曲线下面积(脂质暴露量)

定义

在心血管脂学中,曲线下面积是指一生中对致动脉粥样硬化脂蛋白的累积、时间整合暴露量;它表达了这样一种理念:数十年中等程度升高的 LDL-C 或 ApoB 所造成的动脉损伤总量,远大于短暂的高水平期。.

为什么这很重要

这一概念解释了为什么在30岁而不是50岁开始进行降脂治疗可以从根本上改变长期患心脏病的风险。.

为什么你‘正常’的胆固醇其实是一个警告信号

精氨酸

定义

精氨酸是一种存在于核桃等全食物中的氨基酸,它是人体用于合成一氧化氮的生化前体,从而支持内皮松弛和健康的血管扩张。.

为什么这很重要

它存在于天然全食物来源中,而精炼油中则没有,这有助于解释为什么整颗核桃能够保护血管功能,而提取出的油却会损害血管功能。.

阅读:已被证实唯一能消除动脉斑块的饮食(不是地中海饮食!)

ARIC

定义

ARIC(动脉粥样硬化风险社区研究)自20世纪80年代末以来一直在对数千名美国成年人进行追踪调查。.

为什么这很重要

数十年的随访让研究人员得以观察到中年时期测量的风险因素如何在多年后演变成实际的疾病事件。这是支持“时间累积暴露量(而非单次测量结果)才是关键所在”这一观点的研究之一。.

体质好如何掩盖心脏病发作

致心律失常性心肌病

定义

致心律失常性心肌病是一种遗传性疾病,通常由桥粒蛋白(如斑菲素蛋白-2)的变异引起,在此病中,心肌逐渐被脂肪或纤维组织取代,从而为危及生命的室性心律失常创造了电生理基础;耐力运动量与该病更早且更严重的表现相关。.

为什么这很重要

它是导致年轻人运动相关心源性猝死的主要原因之一,且运动本身会加速潜在疾病的发展进程。.

如何避免英年早逝

致心律失常性基质

定义

心脏组织出现结构性或电气性改变——例如心房扩大和斑片状纤维化——这会使心脏易于维持异常心律;在运动员中,多年大负荷训练即使在没有症状的情况下也能产生这种基质。.

为什么这很重要

解释为什么运动员在成功进行射频消融术后,房颤仍容易复发。.

问答:房颤、耐力训练与消融术——运动员需要了解的知识

ARRIVE 试验

定义

ARRIVE 是一项随机、安慰剂对照试验,涉及约 12,500 名不伴有糖尿病的中度心血管风险成年人,每日服用 100 毫克阿司匹林;结果发现,主要心血管复合终点没有显著降低,且胃肠道出血增多,部分原因是由于广泛使用他汀类药物和降压药,实际事件发生率远低于预期。.

为什么这很重要

ARRIVE表明,其他预防性治疗方法的改进如何降低了曾使阿司匹林发挥作用的基线风险,从而改变了收益与风险的平衡。.

每日阿司匹林究竟是在夺走你的生命还是在拯救你?最新科学研究怎么说。.

动脉钙化

定义

钙 crystals 在动脉壁内的沉积会使血管变硬,在冠状动脉中则被用作动脉粥样硬化负荷的标志物;一些证据表明维生素 K2 可能有助于抑制其进展。.

为什么这很重要

Understanding calcification helps explain why vitamin K2 is studied as a cardiovascular supplement and why a high calcium score signals elevated risk.

纳豆激酶与心血管斑块:人体研究的真实情况

Arterial Lipid Depletion

定义

The physical removal of cholesterol and other lipids from within the arterial wall, observed histologically in non-human primate models after dietary fat restriction; it represents the earliest and most fundamental step in structural plaque regression.

为什么这很重要

It confirms that the regression seen in imaging trials reflects a real biological change in artery composition, not just a measurement artifact.

Read: Reversal of Coronary Atherosclerosis: Mechanistic Insights from Human and Primate Studies

Arterial Plaque

定义

A deposit within the artery wall made up of lipids, immune cells, cellular debris, and fibrous tissue that accumulates over time and can narrow or block blood flow; also called an atherosclerotic lesion or atheroma.

为什么这很重要

Plaque formation is the central process linking microplastic exposure to heart attack and stroke risk in this study.

问答:日常微塑料是否在助长心脏病?

动脉重塑

定义

Remodeling is the way an artery changes shape as plaque builds up. Often the artery bulges outward to make room, keeping the opening in the middle wide enough for blood to pass.

为什么这很重要

This is why heart disease can hide for decades. The artery is quietly filling with plaque, but because it expanded outward, tests that only look at the opening say everything is fine.

Read: You Feel Fine – That’s the Problem

Arterial Stiffness

定义

Arterial stiffness is a measure of how much an artery's wall resists expansion with each pulse of blood; it increases with age as elastin is lost and collagen accumulates, and manifests clinically as a rising systolic blood pressure alongside a falling or stable diastolic blood pressure after about age 60.

为什么这很重要

Arterial stiffness is a direct, measurable consequence of vascular aging that contributes independently to cardiovascular risk.

Read: Heart disease accelerates as you age

Arteriogenesis

定义

Arteriogenesis is the structural remodeling of pre-existing small arterio-arteriolar anastomoses into mature, muscular conducting arteries, driven primarily by increased fluid shear stress rather than tissue hypoxia. Unlike angiogenesis, which produces only tiny capillaries, arteriogenic vessels can handle meaningful bulk arterial flow.

为什么这很重要

It is the mechanism behind the heart's 'backup pipes' and explains both why fit athletes tolerate coronary blockages silently and why that protection has a hard ceiling.

运动如何阻断疼痛:运动员心脏的致命秘密

动脉

定义

An artery is a blood vessel that carries blood away from the heart to the rest of the body.

为什么这很重要

Artery walls have layers. Plaque does not build up inside the open channel like gunk in a pipe — it builds up inside the wall itself. That difference explains a lot about why heart disease is so easy to miss.

治疗生物学而非管道:心脏病学激进的新方法

Artifact (EKG/Stress Test)

定义

A finding on a cardiac test that mimics a sign of disease but is actually caused by technical interference, movement, or normal variation rather than a true abnormality; physicians must distinguish artifacts from genuine pathological signals to avoid misdiagnosis.

为什么这很重要

Dr. Megdal's doctor initially dismissed his ST depression as an artifact—a decision that delayed diagnosis and illustrates a key challenge in interpreting exercise EKGs in athletes.

Read: How I Reversed My Heart Disease

ASCVD (Atherosclerotic Cardiovascular Disease)

定义

ASCVD is the clinical shorthand for disease caused by plaque buildup in the arteries — it covers coronary artery disease, most strokes, and peripheral artery disease under one label.

为什么这很重要

It's the term driving guideline recommendations and risk calculators, because it groups the different places plaque can cause trouble into the single risk that lifestyle and medication decisions are actually aimed at reducing.

Read: Which Came First – the Lipid or the Inflammation? Apolipoprotein B and the Chicken-and-Egg Problem of Atherogenesis

阿司匹林

定义

Aspirin makes blood platelets less sticky, so clots are less likely to form.

为什么这很重要

If you have already had a heart attack or stroke, daily aspirin usually helps. If you have not, the picture changed: newer studies found the bleeding risk roughly cancels out the benefit for most healthy adults. This is one of the clearest examples of medical advice reversing based on better evidence.

每日阿司匹林究竟是在夺走你的生命还是在拯救你?最新科学研究怎么说。.

ASPREE Trial

定义

ASPREE was a large randomized trial testing daily low-dose aspirin versus placebo in adults aged 70 and older (65 and older for U.S. minorities) who were free of cardiovascular disease; it found no significant reduction in cardiovascular events and a higher rate of major bleeding and all-cause mortality in the aspirin group, forming a key basis for recommending against aspirin initiation in older…

为什么这很重要

ASPREE is one of the three pivotal modern trials that shifted guidelines away from routine aspirin use in healthy older people.

每日阿司匹林究竟是在夺走你的生命还是在拯救你?最新科学研究怎么说。.

ASTEROID Trial

定义

A landmark 2006 serial IVUS study in which rosuvastatin 40 mg daily for 24 months produced statistically significant reductions in both percent atheroma volume and total atheroma volume, providing the first large-scale evidence that intensive statin therapy can regress coronary plaque.

为什么这很重要

ASTEROID established aggressive LDL lowering as a proven strategy for shrinking plaques and set the benchmark for subsequent regression trials.

Read: Reversal of Coronary Atherosclerosis: Mechanistic Insights from Human and Primate Studies

星形胶质细胞

定义

Astrocytes are a type of support cell (glia) in the brain that act as the primary cholesterol-manufacturing cells of the central nervous system, supplying cholesterol to neurons for membrane maintenance and myelin support. Because lipoproteins in the blood cannot cross the blood–brain barrier, the brain depends almost entirely on astrocyte-derived cholesterol synthesis.

为什么这很重要

Disruption of astrocyte cholesterol production is implicated in neurodegenerative conditions, and understanding this isolated synthesis helps explain why systemic LDL levels do not directly reflect brain cholesterol status.

百万美元分子:为什么你的身体为胆固醇付出巨资

动脉粥样硬化形成

定义

Atherogenesis is the step-by-step process of a plaque forming.

为什么这很重要

It starts when an ApoB particle slips into the artery wall and gets trapped. The body treats it as an invader and sends in immune cells. Those cells eat the trapped cholesterol, get stuck themselves, and die there. Repeat this for twenty years and you have a plaque.

Read: Which Came First – the Lipid or the Inflammation? Apolipoprotein B and the Chicken-and-Egg Problem of Atherogenesis

Atherogenic Dyslipidemia

定义

Atherogenic dyslipidemia is a lipid pattern characterized by elevated triglycerides, low HDL cholesterol, and an increased proportion of small, dense LDL particles; it is commonly seen with insulin resistance, visceral obesity, and sedentary behavior, and is associated with accelerated atherosclerosis.

为什么这很重要

Standard cholesterol tests can miss this pattern, making it an important concept for understanding hidden cardiovascular risk.

现代医学能拯救一个久坐不动的人吗?持续40年的三胞胎实验

血浆致动脉粥样硬化指数

定义

A logarithmically derived ratio of triglycerides to HDL cholesterol used as a marker of atherogenic lipoprotein particle size and cardiovascular risk; the article notes that an elevated AIP correlates with coronary calcium burden and major adverse cardiovascular events independent of traditional risk factors.

为什么这很重要

AIP offers an additional layer of risk information beyond the CAC score itself, particularly for patients with borderline results.

零的力量:没有钙 – 没有风险?

Atherogenic Lipoprotein Hypothesis

定义

The atherogenic lipoprotein hypothesis is the scientific proposition that apolipoprotein B-containing lipoproteins are the primary causal drivers of atherosclerotic cardiovascular disease, meaning the number of these particles circulating in the blood directly determines the rate of plaque formation in arterial walls.

为什么这很重要

Understanding this hypothesis explains why researchers have shifted focus from total cholesterol to particle counts as the key measure of heart disease risk.

胆固醇大谎言:揭露饮食行业的有组织否认

Atherogenic Particle

定义

Atherogenic particles are the ApoB-containing lipoproteins—including LDL, IDL, VLDL, and lipoprotein(a)—that can enter and be retained in the artery wall to initiate and sustain plaque growth; the article uses the term to describe what must be lowered substantially and sustainably to achieve plaque regression.

为什么这很重要

The article's main practical message is to lower these particles, so readers need a precise understanding of what the term covers beyond just 'LDL'.

Read: Can heart disease be reversed?

Atherogenic Particle Number

定义

The total count of ApoB-containing lipoprotein particles circulating in the bloodstream—including LDL, VLDL remnants, and Lp(a)—as distinct from the cholesterol mass they carry; the European Atherosclerosis Society consensus holds that particle number, best captured by ApoB measurement, is a more accurate predictor of atherosclerotic risk than LDL-C concentration alone.

为什么这很重要

Shifting focus from cholesterol mass to particle number is the central scientific reframing of the article, explaining why ApoB measurement is replacing traditional LDL-C testing.

Read: The Cholesterol Breakthrough: From Daily Pills to Twice-a-Year Shots

动脉粥样硬化

定义

Atherosclerosis is the disease behind most heart attacks and many strokes. Cholesterol particles get stuck in the wall of an artery, the body sends immune cells to clean up, and over years that mess hardens into plaque.

为什么这很重要

The key thing to understand is that it starts young — often in the teens and twenties — and grows silently for decades before anyone notices. By the time it causes a symptom, it has usually been building for most of your life.

从子宫到逆转:消除一生的动脉损伤

Atherosclerotic Heart Disease

定义

A condition in which plaques composed of lipids, inflammatory cells, and fibrous tissue build up within the walls of the coronary arteries, narrowing them and reducing blood flow to the heart; it is the leading cause of heart attacks worldwide.

为什么这很重要

Megdal's diagnosis and self-reported reversal of this condition is the medical backdrop that makes his athletic achievements particularly striking.

彼得·梅格达尔 (Peter Megdal) 登上《戴德姆时报》

Atherosclerotic Regression

定义

The measurable reduction in the size or lipid content of coronary artery plaques, documented by angiography or imaging; it requires a sustained biochemical environment of low circulating LDL and low inflammatory signaling so that cholesterol efflux from the arterial wall exceeds influx.

为什么这很重要

It is the central clinical goal of the dietary protocols discussed in the article—moving beyond slowing disease to actually reversing it.

Read: Pathophysiological Determinants of Atherosclerotic Regression: The Criticality of Ultra-Low-Fat Whole-Food Plant-Based Nutritional Protocols

运动员钙化悖论

定义

The athlete calcification paradox is the well-documented finding that lifelong endurance athletes accumulate more coronary artery calcium and total plaque than sedentary people of similar age, yet have substantially lower cardiovascular mortality — meaning more 'rust' does not translate into greater death risk in this population.

为什么这很重要

It is the central finding that forces doctors and athletes to rethink what a high calcium score actually means in a person who exercises intensely.

巅峰体能与隐形钙化:运动员的斑块积聚悖论

运动员悖论

定义

The athlete paradox is the observation that some lifelong endurance athletes have higher coronary artery calcium scores and greater total plaque burden than less active peers, despite otherwise favorable cardiovascular risk profiles, suggesting that extreme chronic exercise may independently promote arterial calcification.

为什么这很重要

It challenges the simple assumption that more exercise always means lower heart disease risk.

Read: What is the difference between Mediterranean and whole-food plant-based diets for heart disease?

运动员的心脏

定义

Athlete's heart describes the normal changes that happen to a heart trained hard for years. The walls thicken a bit, the chambers get bigger, and the resting pulse drops.

为什么这很重要

These changes are healthy adaptations, not disease. The complication is that they can look similar to real heart problems on a test, so they need to be read by someone who understands athletes.

运动如何阻断疼痛:运动员心脏的致命秘密

ATP-Citrate Lyase (ACLY)

定义

ATP-citrate lyase is an enzyme that acts two steps upstream of HMG-CoA reductase in the mevalonate pathway, cleaving citrate to supply the raw material for cholesterol synthesis; bempedoic acid inhibits this enzyme to reduce hepatic cholesterol production.

为什么这很重要

Because ACLY is the target of bempedoic acid, understanding it explains how this newer drug lowers LDL by a mechanism distinct from statins.

我应该服用降胆固醇药吗?当然应该。.

心房颤动

定义

Atrial fibrillation, often shortened to AFib, is a fast and irregular heartbeat that starts in the upper chambers of the heart.

为什么这很重要

Because those chambers quiver instead of squeezing properly, blood can pool and form a clot, which may travel to the brain and cause a stroke. Interestingly, endurance athletes get AFib more often than couch potatoes — one of the few ways heavy exercise raises a risk instead of lowering it.

Atrial Fibrosis

定义

Microscopic scarring of atrial muscle tissue, often resulting from chronic mechanical stretch or inflammation; fibrosis disrupts normal electrical conduction and is a well-established predictor of AF recurrence after ablation.

为什么这很重要

Fibrosis is one of the main reasons why ablation is less durable in long-term endurance athletes.

问答:房颤、耐力训练与消融术——运动员需要了解的知识

Atrial Refractory Period

定义

The brief interval after each electrical activation during which atrial muscle cells cannot respond to a new stimulus; when this period is shortened — as occurs during sympathetic surges or with vagal tone — the atria become more vulnerable to rapid, disorganized firing and AF onset.

为什么这很重要

A shorter refractory period is one of the key electrical mechanisms linking intense exercise to AF in trained athletes.

接受过治疗的心房颤动大师级运动员(50岁以上)的心血管风险管理与训练调整:专家报告

Atrial Remodeling

定义

Structural and electrical changes in the atria — including enlargement, wall thickening, fibrosis, and altered ion-channel expression — that develop in response to chronic pressure or volume overload; in endurance athletes, sustained high cardiac output drives this process and increases AF susceptibility.

为什么这很重要

Atrial remodeling is the underlying mechanism linking years of hard endurance training to elevated AF risk.

问答:房颤、耐力训练与消融术——运动员需要了解的知识

Atypical Flutter

定义

A form of atrial flutter whose reentrant circuit does not follow the classic right-atrial pathway but instead arises from fibrotic or scarred tissue elsewhere in the atria; in athletes post-ablation, it often signals disease progression beyond the originally isolated pulmonary vein triggers.

为什么这很重要

Its emergence after ablation is a warning sign that the underlying arrhythmogenic substrate is advancing, not resolved.

接受过治疗的心房颤动大师级运动员(50岁以上)的心血管风险管理与训练调整:专家报告

AUC (Area Under the ROC Curve)

定义

A statistical measure of a diagnostic test's ability to discriminate between patients who will and will not experience an event, ranging from 0.5 (no better than chance) to 1.0 (perfect discrimination); in the CONFIRM2 registry, AI-QCT raised the AUC for predicting major cardiac events from 0.62 to 0.75.

为什么这很重要

The AUC figure is how the article quantifies the improvement in predictive accuracy that AI-QCT provides over standard testing.

Read: The Future of Heart Disease Management

Autoimmune Conditions

定义

Disorders in which the immune system mistakenly attacks the body's own tissues; Cordain argues that grains—which are evolutionarily recent foods—are associated with certain autoimmune conditions, citing gluten-related and lectin-related mechanisms as possible triggers.

为什么这很重要

This claim is a key reason the Paleo framework discourages grains and is worth understanding when evaluating grain-free diets.

Read: The Protein Debate

Automated External Defibrillator

定义

An automated external defibrillator, or AED, is a portable device that can shock a stopped heart back into rhythm. It talks you through what to do, and it will not deliver a shock unless one is needed.

为什么这很重要

When someone collapses from cardiac arrest, survival drops with every passing minute. A bystander with an AED nearby saves far more lives than waiting for an ambulance.

如何避免英年早逝

Autophagy

定义

Autophagy is a cellular housekeeping process by which cells break down and recycle damaged proteins and organelles; in arterial macrophages, it helps clear lipid debris and prevents the accumulation of plaque. The article's 2024 Nature Metabolism finding suggests that high single-meal protein doses may suppress autophagy in these immune cells, potentially worsening atherosclerosis in animal model…

为什么这很重要

Autophagy in artery-wall immune cells is the proposed mechanism linking large protein meals to cardiovascular risk, making it central to the article's '25-gram paradox.'

是什么在65岁前夺走你的生命,却可能在65岁后拯救你——蛋白质的悖论

Autopsy-Negative Sudden Unexplained Death (AN-SUD)

定义

Autopsy-negative sudden unexplained death is a classification applied when a complete post-mortem examination, including cardiac-specific pathological review, identifies no structural cause for a fatal cardiac event; it represents the single largest adjudicated category in contemporary NCAA athlete SCD data at approximately 20% of cases.

为什么这很重要

Knowing that one in five young cardiac deaths leaves no structural trace explains why screening strategies focused solely on anatomy cannot prevent all events.

如何避免英年早逝

Autoxidation

定义

Autoxidation is the spontaneous reaction of fats with atmospheric oxygen, initiated and propagated without an external ignition source; the rate increases with the number of double bonds in a fatty acid, making highly polyunsaturated seed oils more prone to going rancid during storage or repeated heating than saturated or monounsaturated fats.

为什么这很重要

It is the chemical basis for advice to store oils in cool, dark conditions and avoid reusing frying oil.

阅读:seed oils 是否健康,是真是假?

平均管腔直径

定义

The mean internal diameter measured across an entire standardized arterial segment between reference markers, as opposed to the single narrowest point; the Megdal study uses ALD change across red tick–marked segments to document diffuse, wall-wide regression in the LAD and Circumflex rather than improvement at one focal spot only.

为什么这很重要

ALD reveals whether the whole artery is healthier, not just whether one isolated hot-spot improved.

Read: Expert Angiographic Evaluation of Coronary Artery Disease Regression: The Megdal Serial Angiogram (2014–2018)

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B

Balloon Angioplasty

定义

A catheter-based procedure in which a small balloon is inflated inside a narrowed coronary artery to compress the plaque and widen the vessel; widely used before stents were developed but limited by a high rate of the artery re-narrowing (restenosis) after the procedure.

为什么这很重要

Balloon angioplasty was the predecessor to stenting and understanding its limitations explains why stents became the dominant approach.

Read: The Ins and Outs of Cardiac Stents

巴尔的摩老龄化纵向研究

定义

The Baltimore Longitudinal Study of Aging is a long-running prospective cohort study that tracked healthy men over decades and documented that total testosterone declines roughly 1–2% per year after the third decade, while free and bioavailable testosterone fall more steeply at about 2–3% per year as SHBG simultaneously rises.

为什么这很重要

It provides foundational data on how male hormone levels change with age, supporting the clinical importance of measuring bioavailable rather than total testosterone.

Read: Testosterone Therapy and Your Heart: Why Your Total Score is Misleading

Bare-Metal Stent

定义

An uncoated metal mesh tube implanted inside a coronary artery to hold it open; unlike drug-eluting stents, it carries no medication and has a higher tendency to become re-blocked by overgrowth of arterial tissue (neointimal hyperplasia).

为什么这很重要

Understanding the difference between stent types helps patients ask informed questions about which device is being recommended and why.

Read: The Ins and Outs of Cardiac Stents

Bassler Hypothesis

定义

The Bassler hypothesis was a 1970s claim by physician Thomas Bassler that completing a standard marathon conferred near-absolute protection against fatal coronary atherosclerosis; autopsy studies in the late 1970s and 1980s documenting coronary artery disease in runners who died during training quickly disproved it.

为什么这很重要

Understanding this discredited idea explains why doctors once assumed fit athletes were immune to heart disease — and why its collapse reshaped how we screen athletes today.

巅峰体能与隐形钙化:运动员的斑块积聚悖论

BDNF (Brain-Derived Neurotrophic Factor)

定义

A protein that supports the survival, growth, and plasticity of neurons; estradiol promotes BDNF-associated signaling pathways, and its decline during menopause may reduce synaptic maintenance and contribute to memory complaints.

为什么这很重要

BDNF is a key molecular bridge between estrogen loss and cognitive changes, making it relevant to understanding menopausal brain health.

绝经 内分泌 心血管 风险

Belly Fat

定义

Belly fat that sits deep in the abdomen, wrapped around the organs, is called visceral fat. It is different from the softer fat you can pinch under the skin.

为什么这很重要

Visceral fat is active. It sends out chemical signals that raise blood sugar, blood pressure, and triglycerides. This is why waist size can predict heart trouble better than weight on the scale.

阅读:为什么腹部脂肪比你想象的更危险

Benefit–Risk Balance

定义

Benefit–risk balance refers to the quantitative comparison of the absolute reduction in harmful events a treatment prevents against the absolute increase in harmful events it causes; for aspirin, this balance is highly favorable in secondary prevention (where event rates are high) but close to neutral or unfavorable in primary prevention (where event rates are low).

为什么这很重要

This concept is the central framework of the entire aspirin debate—the same drug can be lifesaving for one person and harmful for another depending on their underlying risk.

每日阿司匹林究竟是在夺走你的生命还是在拯救你?最新科学研究怎么说。.

Beta Blocker

定义

A beta blocker is a medicine that slows the heart and makes it beat less forcefully, which lowers blood pressure and reduces how much oxygen the heart needs.

为什么这很重要

Common examples include metoprolol and carvedilol. They are widely used after heart attacks and in heart failure, where a calmer, slower heart is easier on damaged muscle.

Beta-Cell Dysfunction

定义

Impaired capacity of the insulin-secreting beta cells of the pancreatic islets to produce sufficient insulin in response to rising blood glucose; in type 2 diabetes, prolonged metabolic stress can cause irreversible beta-cell loss that limits the degree of disease reversal possible.

为什么这很重要

The article uses beta-cell dysfunction as a parallel to myocardial scarring to illustrate the broader principle that suppressing a disease process does not always undo the organ damage it has already caused.

Read: Can Heart Disease Be Cured?

Betaine-Dependent Remethylation

定义

An alternative homocysteine remethylation route, operating mainly in the liver and kidney, that uses betaine rather than 5-methyltetrahydrofolate as the methyl donor; it supplements but does not replace the folate-dependent pathway.

为什么这很重要

It explains why homocysteine lowering with B vitamins is sometimes incomplete and why organ-specific factors like liver and kidney health affect the response.

补充L-甲基叶 folate + 活性B族维生素降低同型半胱氨酸能否帮助预防动脉粥样硬化并减少斑块?

双房扩大

定义

Enlargement of both the left and right atria, a structural change driven in endurance athletes by years of high cardiac output and sustained volume loading; it creates a stretched, electrically unstable tissue environment that predisposes to atrial fibrillation.

为什么这很重要

Understanding why the atria enlarge helps explain why reducing training volume — not just treating symptoms — is essential for long-term rhythm control.

接受过治疗的心房颤动大师级运动员(50岁以上)的心血管风险管理与训练调整:专家报告

双百年自行车馆

定义

An indoor cycling track located in Aguascalientes, Mexico, at approximately 1,887 meters above sea level, known for its steeply banked turns and high-altitude conditions that favour aerodynamic speed for record attempts.

为什么这很重要

The venue's altitude and banking angle are central to understanding the conditions—and trade-offs—under which Megdal set his world hour record.

精英老将自行车手的生理优化与寿命表现建模

大聚糖

定义

Biglycan is a small leucine-rich proteoglycan present in the arterial subendothelial matrix that, along with versican and decorin, binds apoB-containing lipoprotein particles through ionic interactions, contributing to their retention in the intima as an initiating step in atherosclerosis.

为什么这很重要

Understanding the specific molecules that trap particles helps explain why reducing particle number is more important than cholesterol content per particle.

载脂蛋白B:更长、更高、更糟

Bioabsorbable Stent

定义

A next-generation coronary scaffold made from materials that are gradually broken down and absorbed by the body over time, leaving no permanent metallic structure inside the artery.

为什么这很重要

Because no metal remains, bioabsorbable stents avoid the lifelong risk of in-stent thrombosis associated with permanent metal devices.

Read: The Ins and Outs of Cardiac Stents

生物利用度睾酮

定义

Bioavailable testosterone is the sum of the free (unbound) and albumin-bound fractions of circulating testosterone—the portion actually accessible to tissues—as opposed to the SHBG-bound fraction, which is biologically inert under normal conditions.

为什么这很重要

This is the clinically meaningful number that predicts symptoms; total testosterone alone can be misleading.

Read: Testosterone Therapy and Your Heart: Why Your Total Score is Misleading

Biohacking

定义

A popular term for self-experimentation with diet, supplements, technology, or lifestyle practices aimed at optimizing physical performance, health, or longevity; it lacks a standardized scientific definition and often promotes unvalidated interventions.

为什么这很重要

Knowing the term helps readers critically evaluate trendy health claims that may outpace the supporting evidence.

营养学大辩论:原始人饮食法/生酮饮食/旧石器饮食与全食物植物性饮食对长寿和心脏病影响的循证现实

Biologic (Drug)

定义

A medication derived from living cells or biological sources rather than chemical synthesis; unlike small-molecule drugs such as statins, biologics are typically large proteins administered by injection and are designed to target specific molecules in the body.

为什么这很重要

Understanding that Repatha is a biologic helps explain why it works through a completely different mechanism than statins and has a distinct side-effect profile.

Read: How I Reversed My Heart Disease

生物惯性

定义

The tendency of established structural damage—such as calcified plaques or myocardial scar tissue—to persist even after the active disease process driving that damage has been halted, because the biochemical and cellular remodeling involved is largely irreversible.

为什么这很重要

This concept explains why early intervention produces better outcomes than late intervention, a recurring theme in the article's discussion of plaque types and heart-attack scarring.

Read: Can Heart Disease Be Cured?

Biological Latency

定义

Biological latency in atherosclerosis is the interval between the start of arterial injury from ApoB-containing particles and the point at which a lesion grows large enough for clinical imaging to detect it; autopsy studies of young soldiers and the Bogalusa Heart Study confirm that microscopic disease is common long before any scan turns positive.

为什么这很重要

Latency explains why a clean heart scan in a young person with very high cholesterol can be misleading rather than reassuring.

Read: Does metabolic health protect you from high cholesterol?

生物标志物

定义

A biomarker is something measurable in the body that tells you about health or disease — a lab value, a scan result, a blood pressure reading.

为什么这很重要

The catch is that changing a biomarker does not automatically mean you have changed your fate. A number can improve while the underlying disease keeps going. Good biomarkers are ones that have been proven to track real outcomes.

牛排中的隐形毒素:肠道细菌如何引发心脏病

Bis-Allylic Methylene Group

定义

A carbon atom flanked on both sides by carbon-carbon double bonds in a fatty acid chain; this configuration is particularly vulnerable to free-radical attack and is the structural reason polyunsaturated fats oxidize faster than saturated or monounsaturated fats.

为什么这很重要

This is the precise chemical feature that makes seed oils less stable at high heat, grounding the cooking-stability advice in molecular reality.

阅读:seed oils 是否健康,是真是假?

Bloch Pathway

定义

The Bloch pathway is one of two main routes by which lanosterol is converted to cholesterol, proceeding through the intermediate desmosterol before a final reduction by the enzyme DHCR24. It predominates in the testes, adrenal glands, and developing neurons, where the desmosterol intermediate itself serves a biological function.

为什么这很重要

Defects in specific enzymes of this pathway cause inherited sterol disorders that can present with cardiovascular and neurological complications.

百万美元分子:为什么你的身体为胆固醇付出巨资

血压

定义

Blood pressure is the force of blood pushing against your artery walls. It is written as two numbers, like 120/80. The top number is the pressure when your heart squeezes, the bottom is when it relaxes.

为什么这很重要

High blood pressure damages artery walls over time and makes it easier for cholesterol particles to get in. It usually causes no symptoms at all, which is why it gets missed for years.

心脏病是一种选择吗?阻止斑块形成的‘零风险’秘诀

Blood Sugar

定义

Blood sugar, or glucose, is the fuel your cells run on. Your body works hard to keep it in a narrow range.

为什么这很重要

When it stays high for years, it damages blood vessels throughout the body — including the ones feeding your heart, kidneys, eyes, and nerves. High blood sugar often shows up alongside high triglycerides and a high particle count.

不要再迷信低密度脂蛋白(LDL)!关于载脂蛋白B(ApoB)、胰岛素抵抗与糖尿病的真相

Blood Volume

定义

The total circulating volume of blood in the body; endurance training expands plasma volume and red cell mass, increasing oxygen delivery to muscles and contributing to higher VO₂max in trained athletes.

为什么这很重要

Expanded blood volume is one of the key physiological adaptations distinguishing elite masters athletes from sedentary age-matched individuals.

精英老将自行车手的生理优化与寿命表现建模

Blood–Brain Barrier

定义

The blood–brain barrier is a highly selective cellular interface lining the brain's blood vessels that blocks lipoprotein particles from entering the central nervous system, meaning the brain must synthesize all of its own cholesterol locally.

为什么这很重要

Understanding this barrier explains why lipid-lowering drugs do not deplete brain cholesterol, addressing a common concern about statin safety and cognitive effects.

您的细胞会自行合成胆固醇——那为什么您的血液里到处都是它?

Blooming Artifact

定义

A CT imaging phenomenon in which dense calcified deposits appear larger than they truly are due to signal spillover, creating a bright 'halo' that can obscure adjacent non-calcified plaque or distort lumen assessment.

为什么这很重要

This artifact is a key reason standard CAC scans can underestimate the full extent of coronary disease lurking beside calcified spots.

Read: Coronary Calcium and Athletic Risk

蓝色宝地

定义

Five geographic regions—Okinawa, Sardinia, Loma Linda, Nicoya, and Ikaria—identified by researcher Dan Buettner where people live significantly longer than the global average; their diets are consistently 90–95% plant-based, centered on legumes, whole grains, and tubers.

为什么这很重要

Blue Zone populations offer real-world, long-term evidence of which dietary patterns are associated with exceptional longevity.

营养学大辩论:原始人饮食法/生酮饮食/旧石器饮食与全食物植物性饮食对长寿和心脏病影响的循证现实

Body Mass Index

定义

Body mass index, or BMI, is a number calculated from your height and weight, used as a rough measure of body size.

为什么这很重要

It is convenient but crude. It cannot tell muscle from fat, and it says nothing about where your fat is stored. A muscular athlete can land in the overweight range while being perfectly healthy, and a thin person can carry dangerous visceral fat.

阅读:为什么腹部脂肪比你想象的更危险

博加卢萨心脏研究

定义

The Bogalusa Heart Study examined the arteries of children and young adults who died in accidents in a Louisiana town.

为什么这很重要

The findings were startling: fatty streaks and early plaque in teenagers, and more of it in those with higher cholesterol and blood pressure. It is direct evidence that heart disease begins decades before anyone feels anything.

从子宫到逆转:消除一生的动脉损伤

Brachial Artery FMD

定义

Brachial artery flow-mediated dilation (FMD) is a noninvasive ultrasound test that measures how much the brachial artery in the upper arm widens in response to increased blood flow, reflecting nitric oxide-dependent endothelial function; it is a surrogate marker associated with cardiovascular risk in observational studies but is not itself a clinical endpoint like heart attack or stroke.

为什么这很重要

Many dietary fat studies use FMD as an outcome, so knowing its limitations helps readers weigh those results appropriately.

阅读:seed oils 是否健康,是真是假?

Brachiocephalic Artery

定义

A major artery branching from the aortic arch that supplies blood to the head, neck, and right arm; in mouse atherosclerosis studies it is a key site for plaque measurement because it develops lesions rapidly and reproducibly.

为什么这很重要

The 624% plaque increase reported at this artery is the study's most striking finding, so knowing what it is matters.

问答:日常微塑料是否在助长心脏病?

Bradford Hill Criteria

定义

The Bradford Hill criteria are a set of nine principles—including strength of association, consistency, biological plausibility, and dose-response—used to evaluate whether an observed statistical association between an exposure and a disease is likely to be causal.

为什么这很重要

They are the standard framework scientists use to judge whether LDL truly causes heart disease rather than just correlating with it.

Read: The Big Cholesterol Lie, Part 2

Breakaway (Cycling Road Race)

定义

A small group of riders who accelerate away from the main field (peloton) during a race, hoping to hold their lead to the finish line.

为什么这很重要

The tactical decision to chase the breakaway drove the high-intensity cardiovascular effort that is the athletic centrepiece of the article.

Read: Peter Megdal gets second at National Championships

BROAD Study

定义

A randomized controlled trial (Wright et al., 2017) testing a whole food plant-based diet in a community setting for obesity, ischemic heart disease, or diabetes; the WFPB group achieved greater weight loss at six and twelve months than any other trial that did not mandate calorie restriction or exercise.

为什么这很重要

It is one of the few RCTs directly comparing plant-based eating to usual care for weight loss without confounding calorie counting.

营养学大辩论:原始人饮食法/生酮饮食/旧石器饮食与全食物植物性饮食对长寿和心脏病影响的循证现实

Brown and Goldstein LDL Receptor Pathway

定义

The foundational molecular mechanism described by Nobel laureates Michael Brown and Joseph Goldstein, showing that liver cells regulate their own cholesterol uptake through surface receptors that bind and clear LDL from the bloodstream; this discovery explained familial hypercholesterolemia and became the biological rationale for statins, PCSK9 inhibitors, and all subsequent LDL-lowering therapie…

为什么这很重要

Every cholesterol-lowering drug discussed in the article ultimately works by exploiting or augmenting this pathway, making it the conceptual bedrock of modern lipid medicine.

Read: The Cholesterol Breakthrough: From Daily Pills to Twice-a-Year Shots

丁酸盐

定义

A short-chain fatty acid produced when gut bacteria ferment dietary fiber; it strengthens the intestinal barrier, reducing the leakage of bacterial toxins (such as LPS) into the bloodstream that would otherwise drive systemic inflammation.

为什么这很重要

It connects diet and gut health directly to cardiovascular inflammation, showing that what you eat shapes your inflammatory risk.

炎症、脂蛋白与以低密度脂蛋白(LDL)为中心的时代的终结

BVAIT (B-Vitamin Atherosclerosis Intervention Trial)

定义

A randomized controlled trial of 506 participants that tested high-dose B vitamins (5 mg folic acid, 0.4 mg B-12, 50 mg B-6) versus placebo for approximately three years, with carotid intima-media thickness progression as the primary endpoint; the main result was negative.

为什么这很重要

It is the largest imaging trial directly testing whether B vitamins slow arterial plaque progression in people with mildly elevated homocysteine.

补充L-甲基叶 folate + 活性B族维生素降低同型半胱氨酸能否帮助预防动脉粥样硬化并减少斑块?

心脏搭桥手术

定义

Bypass surgery takes a healthy blood vessel from somewhere else in your body and uses it to route blood around a badly blocked coronary artery.

为什么这很重要

Like a stent, it restores blood flow to muscle that was starving. Also like a stent, it treats one location. The disease process continues in the rest of your arteries unless the underlying causes are addressed.

治疗生物学而非管道:心脏病学激进的新方法

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C

C反应蛋白

定义

C-reactive protein, or CRP, is a substance your liver makes when there is inflammation somewhere in your body. A sensitive version of the test, hs-CRP, is used to estimate heart risk.

为什么这很重要

A high result means inflammation, but not where it is coming from — a cold, arthritis, or gum disease will raise it too. It adds information but does not replace measuring your particle count.

Read: Which Came First – the Lipid or the Inflammation? Apolipoprotein B and the Chicken-and-Egg Problem of Atherogenesis

C-Statistic (Concordance Statistic)

定义

A measure of a predictive model's ability to correctly rank individuals by risk, equivalent to the Area Under the ROC Curve (AUC); it ranges from 0.5 (no better than chance) to 1.0 (perfect discrimination), with values above 0.80 generally considered clinically useful.

为什么这很重要

It allows direct comparison of how well traditional risk scores versus AI imaging actually identify who will have a heart attack.

一种无需手术透视心脏的新方法——预测心脏病发作的最佳途径

C5 Classification (Paracycling)

定义

The least functionally impaired category in UCI paracycling, reserved for athletes with a limb deficiency, leg-length discrepancy, or impaired muscle power or range of movement that is mild enough to allow racing on a standard bicycle.

为什么这很重要

Classification determines who an athlete competes against and which records apply, making it essential context for evaluating Megdal's performances.

Read: Cyclist Peter Megdal seeks out, and overcomes, difficult obstacles

冠状动脉疾病报告和数据系统

定义

CAD-RADS (Coronary Artery Disease Reporting and Data System) is a standardized grading scale used to report findings from coronary CT angiography, ranging from 0 (no plaque or stenosis) to 5 (at least one totally occluded artery); the index patient scored CAD-RADS 0, reflecting no detectable plaque above the imaging threshold.

为什么这很重要

Knowing what CAD-RADS 0 means—and what it cannot rule out—is essential to interpreting the 'perfect' scan result discussed throughout the article.

Read: Does metabolic health protect you from high cholesterol?

Calcific Aortic Valve Stenosis (CAVS)

定义

Calcific aortic valve stenosis is a condition in which calcium deposits progressively stiffen and narrow the aortic valve, ultimately obstructing blood flow from the heart; Lp(a)-borne oxidized phospholipids are a principal driver of the underlying valvular inflammation and calcification.

为什么这很重要

It explains why some people with seemingly controlled cholesterol still develop severe heart valve disease requiring surgery.

为什么载脂蛋白B(ApoB)很重要?

钙化

定义

Calcification is when calcium gets deposited into a plaque, turning part of it hard and bony.

为什么这很重要

It sounds bad, and a high total amount does signal a lot of disease. But the hardening itself is partly the body's repair job — a hard, stable plaque is less likely to crack open than a soft, greasy one. This is why statins and heavy exercise can both make plaque look more calcified while making it safer.

Read: Exercise Doesn’t Erase Arterial Plaque – It Turns It to Stone!

Calcium Blooming Artifact

定义

A CT imaging artifact in which a dense calcified deposit spreads or 'blooms' beyond its true boundaries due to detector limitations, obscuring adjacent soft tissue and making it impossible to assess non-calcified plaque sitting next to the calcium.

为什么这很重要

The article cites calcium blooming as a key reason conventional CT missed dangerous soft plaque, and explains how photon-counting CT solves it.

Read: The Future of Heart Disease Management

钙化积分

定义

A calcium score (coronary artery calcium score) is a number derived from a CT scan that quantifies the total amount of calcified plaque in the coronary arteries; a score of zero indicates no detectable calcified plaque, while higher scores reflect greater plaque burden and elevated cardiovascular risk.

为什么这很重要

It is the most direct, widely available way to see whether plaque has actually formed in your arteries, going beyond what cholesterol tests can reveal.

Read: You Feel Fine – That’s the Problem

Caloric Restriction (CR)

定义

A sustained reduction in calorie intake without malnutrition that consistently downregulates growth signaling, enhances autophagy, and extends lifespan in a wide range of organisms; it is considered one of the most reproducible pro-longevity interventions in experimental biology.

为什么这很重要

Caloric restriction is the benchmark intervention against which most dietary longevity strategies are compared, and it underpins advice about avoiding chronic overeating earlier in life.

Read: Stop Wasting Away as You Age…the Emerging Science of Antiaging!

卡那单抗

定义

Canakinumab is a monoclonal antibody that targets interleukin-1β (IL-1β), a key inflammatory signaling protein; it was the active drug in the CANTOS trial, where it reduced cardiovascular events without affecting LDL cholesterol.

为什么这很重要

Its cardiovascular benefit without any cholesterol lowering was landmark evidence that inflammation is a therapeutic target in heart disease in its own right.

Read: What’s more important, diet vs drugs, or outcome vs regression?

坎托斯

定义

CANTOS (Canakinumab Anti-inflammatory Thrombosis Outcomes Study) was a large randomized trial that tested canakinumab, a drug blocking the inflammatory signal IL-1β, against placebo; at its prespecified 150 mg dose it reduced major cardiovascular events by roughly 15% without lowering LDL cholesterol, providing direct human evidence that inflammation drives heart attacks through a pathway indepen…

为什么这很重要

It proved that targeting inflammation alone — separate from cholesterol — can reduce heart attacks, a finding that reshaped how scientists think about what drives plaque rupture.

Read: What’s more important, diet vs drugs, or outcome vs regression?

CANTOS Trial

定义

The CANTOS (Canakinumab Anti-inflammatory Thrombosis Outcomes Study) trial was a landmark randomized controlled trial that tested whether canakinumab, an IL-1β inhibitor, could reduce cardiovascular events in high-risk patients with elevated hs-CRP after myocardial infarction; its positive results provided the first direct clinical evidence that inflammation is a causal, therapeutically modifiabl…

为什么这很重要

CANTOS changed how cardiologists think about residual risk by showing inflammation is not just a bystander—it is a treatable target.

Read: Which Came First – the Lipid or the Inflammation? Apolipoprotein B and the Chicken-and-Egg Problem of Atherogenesis

Capillary Density

定义

Capillary density refers to the number of tiny blood vessels per unit of muscle tissue; regular endurance exercise increases capillary density, improving oxygen and nutrient delivery to working muscles, an adaptation that drugs cannot produce.

为什么这很重要

Higher capillary density is part of the structural fitness that keeps muscles and organs well-supplied as we age.

现代医学能拯救一个久坐不动的人吗?持续40年的三胞胎实验

Capillary Rarefaction

定义

Capillary rarefaction is the age-related loss of capillary density within skeletal muscle, which increases the distance oxygen must travel from blood to muscle fibers and reduces the efficiency of oxygen extraction during exercise.

为什么这很重要

It is one of the peripheral mechanisms that erodes aerobic capacity in older athletes even when the heart itself is well-preserved.

体质好如何掩盖心脏病发作

Caprylic Acid (C8:0)

定义

An 8-carbon saturated fatty acid found in small amounts in coconut oil (~7–9%) and concentrated in purified MCT oils; it is rapidly absorbed, transported directly via the portal vein, and oxidized in the liver, accounting for most of the thermogenic and ketogenic effects attributed to MCT preparations in research studies.

为什么这很重要

Most metabolism studies praising MCTs used oils rich in C8:0—not coconut oil—making this distinction crucial for evaluating coconut oil's weight-loss claims.

椰子油作为健康食品的神话:行业如何左右你的饮食!

Carbohydrate Gel (Energy Gel)

定义

A concentrated, rapidly absorbed source of simple carbohydrates in a semi-liquid form, consumed immediately before or during endurance exercise to maintain blood glucose and delay glycogen depletion.

为什么这很重要

Fueling strategy before a maximal aerobic effort is a practical cardiovascular nutrition topic relevant to heart patients who exercise.

Read: Cyclist Peter Megdal seeks out, and overcomes, difficult obstacles

Carbohydrate-Restricted Diet (CRD)

定义

A carbohydrate-restricted diet is a dietary pattern that substantially limits carbohydrate intake—ranging from strict ketogenic diets to broader low-carb approaches—and is the dietary context in which the Lean Mass Hyper-Responder phenotype and associated LDL elevations are most commonly observed.

为什么这很重要

Knowing this term helps readers understand why the LDL debate has intensified alongside the popularity of keto eating.

Read: The Big Cholesterol Lie, Part 2

冠状动脉风险发展至成年研究

定义

CARDIA has followed young adults from their twenties into later life, tracking fitness, cholesterol, blood pressure, and what eventually happened to them.

为什么这很重要

Because it started so early, it captured the years when plaque is silently forming. It supplies much of the evidence that risk factors in your twenties shape your arteries in your fifties.

体质好如何掩盖心脏病发作

Cardiac Arrest

定义

Cardiac arrest is when the heart suddenly stops pumping and the person collapses, stops breathing normally, and loses consciousness within seconds.

为什么这很重要

It is not the same as a heart attack. A heart attack is a plumbing problem — blocked blood flow. Cardiac arrest is an electrical problem — the heart's rhythm falls apart. A heart attack can trigger one, but so can other things. Without CPR and a defibrillator, survival drops fast.

如何避免英年早逝

心脏导管检查术

定义

Cardiac catheterization is a procedure where a thin tube is threaded through a blood vessel, usually from the wrist or groin, up into the heart's arteries.

为什么这很重要

Doctors use it to see blockages, measure pressures, and often to place a stent in the same session. It is how many people first learn how much disease they actually have.

健美、迅捷且险些丧命:世界级自行车手如何发现隐匿性心脏病

Cardiac Events

定义

Clinically significant heart-related occurrences—including myocardial infarction, unstable angina, and cardiac death—used as outcome endpoints in cardiovascular trials.

为什么这很重要

Trials are ultimately judged on whether they reduce cardiac events, not just on changes in imaging or blood tests.

Read: Can Diet Really Reverse Heart Disease?

Cardiac Ischemia

定义

A condition in which blood flow to the heart muscle is insufficient to meet its oxygen demand, typically caused by narrowed coronary arteries; it can produce chest pain (angina), reduced exercise capacity, or, if severe, a heart attack.

为什么这很重要

Ischemia is the underlying mechanism linking blocked arteries to the symptoms and performance losses described throughout the article.

Read: How I Reversed My Heart Disease

Cardiac Magnetic Resonance (CMR)

定义

A specialized MRI technique for the heart that can characterize the location, pattern, and extent of myocardial injury, helping distinguish ischemic infarction from non-ischemic conditions such as myocarditis or takotsubo syndrome.

为什么这很重要

CMR is essential in MINOCA workup because it reveals where and how the heart muscle was injured, guiding the search for an underlying mechanism.

隐匿性梗死:MINOCA机制、诊断与管理的深入研究验证

Cardiac Rehabilitation

定义

A medically supervised program of exercise, education, and lifestyle modification prescribed after a cardiac event such as a heart attack, designed to improve cardiovascular function and reduce the risk of future events.

为什么这很重要

The article presents cardiac rehab as the clearest real-world hint that improving VO₂ max can causally lower mortality.

Read: VO₂ max: the determinant of Health and Longevity?

Cardiopulmonary Recovery

定义

The measurable restoration of heart and lung function following disease or injury, assessed through indices such as ejection fraction, VO2 max, and resting heart rate; it forms the physiological basis for structured cardiac rehabilitation programs.

为什么这很重要

Quantifying cardiopulmonary recovery allows clinicians and patients to track whether lifestyle and exercise interventions are producing real biological benefit.

Read: The Hour That Would Not End

心肺耐力

定义

Cardiorespiratory fitness is how well your heart, lungs, and muscles work together to use oxygen during hard exercise. It is often measured as VO2 max.

为什么这很重要

It is one of the strongest predictors of how long you will live — stronger than most lab values. But being extremely fit does not make you immune to plaque, which is a hard lesson many endurance athletes have learned.

你的心脏比你更老吗?逆转心血管年龄的科学

Cardiovascular Outcomes Trial (CVOT)

定义

A cardiovascular outcomes trial is a large, long-term randomized controlled trial specifically designed to measure whether a drug reduces major cardiovascular events such as heart attack, stroke, or cardiovascular death, rather than only improving a lab value or surrogate marker; regulators began requiring them for diabetes drugs after 2008.

为什么这很重要

CVOTs are why we know these medicines actually prevent heart attacks, not just lower blood sugar — a distinction critical for evaluating their real-world benefit.

Read: Ozempic and Mounjaro: Saving Your Heart BEFORE the Scale Moves

Carotid Intima-Media Thickness (CIMT)

定义

Carotid intima-media thickness is an ultrasound measurement of the combined thickness of the inner two layers of the carotid artery wall in the neck; a faster rate of thickening indicates accelerating atherosclerosis, and it is used as a surrogate marker for cardiovascular risk in trials such as ELITE.

为什么这很重要

It is a key surrogate endpoint used to test whether hormone therapy slows arterial aging without needing to wait for heart attacks to occur.

Read: Does The New Estrogen Patch Prevent Heart Disease? The Complex Truth Explained

Carotid Intima-Media Thickness (CIMT) Progression

定义

The rate at which the combined thickness of the innermost two layers of the carotid artery wall increases over time, measured by ultrasound and used as a surrogate imaging marker of atherosclerosis progression or regression in clinical trials.

为什么这很重要

Many homocysteine studies used this measure instead of counting heart attacks, making it essential for interpreting whether B vitamins actually slow plaque development.

补充L-甲基叶 folate + 活性B族维生素降低同型半胱氨酸能否帮助预防动脉粥样硬化并减少斑块?

CASCADE FH 登记系统

定义

The CASCADE FH Registry is a United States-based patient registry that prospectively collects clinical, genetic, and treatment data from individuals with familial hypercholesterolemia; in HoFH research it has provided key evidence comparing outcomes between patients diagnosed and treated in childhood versus adulthood.

为什么这很重要

Registry data from CASCADE FH quantified the survival benefit of early diagnosis and treatment, directly shaping current pediatric screening recommendations.

Read: Children With 60-Year-Old Arteries: The Extreme Reality of HoFH

Case-Crossover Study

定义

A case-crossover study compares a person's exposure in the short period just before an acute event — such as a heart attack — with their exposure during earlier 'control' periods in their own life, making each person their own control. The article uses case-crossover data to report that the odds of myocardial infarction roughly double in the hour after acute anger.

为什么这很重要

This design is why the 'anger triggers heart attacks' finding is more credible than it might first appear — but it measures acute triggers, not long-term risk.

Read: Does stress kill you and does meditation save you?

酪蛋白

定义

The dominant protein in cow's milk, accounting for roughly 80% of its total protein content; rodent studies have shown that casein can promote tumour growth at high intake levels and suppress it at lower levels, findings that have been influential but also contested when extrapolated to other animal proteins.

为什么这很重要

Understanding casein's specific effects helps evaluate whether cancer-risk claims about animal protein apply broadly or only to dairy-derived protein.

Read: The Protein Debate

Catecholaminergic Polymorphic Ventricular Tachycardia (CPVT)

定义

Catecholaminergic polymorphic ventricular tachycardia is an inherited channelopathy in which abnormal calcium handling in heart muscle cells causes life-threatening ventricular arrhythmias triggered specifically by the catecholamine surge of exercise or emotional stress, with a structurally normal heart at autopsy.

为什么这很重要

CPVT illustrates how exercise can be directly arrhythmogenic through biochemical rather than mechanical mechanisms, and it is easily missed by standard structural screening.

如何避免英年早逝

Category 3 (Cat 3) Rider

定义

A USA Cycling licence category indicating an intermediate-level amateur road racer, below Category 1–2 elite amateurs and professionals; used to benchmark the competitive field Megdal trains against in Memphis.

为什么这很重要

Knowing the category helps readers gauge how demanding Megdal's training environment is relative to his age-group competition.

Read: Peter Megdal gets second at National Championships

Catheter Ablation

定义

A procedure in which a cardiologist threads a thin flexible tube (catheter) into the heart and uses energy — typically radiofrequency heat or cryotherapy — to destroy small areas of tissue responsible for triggering abnormal electrical signals; the main interventional treatment for AF.

为什么这很重要

The article centers on what athletes can expect from ablation, so knowing how the procedure works matters.

问答:房颤、耐力训练与消融术——运动员需要了解的知识

CAUGHT-CAD Trial

定义

CAUGHT-CAD is a 2025 randomized trial that studied patients with a family history of premature coronary artery disease and found that Coronary CT Angiography — rather than standard calcium scoring alone — was necessary to detect non-calcified plaque and direct timely clinical intervention.

为什么这很重要

The trial is cited as direct evidence that standard calcium scanning is insufficient for people with strong inherited cardiac risk.

Read: The Heart Health App That Finally Asks the Right Question

因果关系

定义

Causation means one thing actually makes another thing happen. It is different from correlation, which only means two things tend to show up together.

为什么这很重要

This distinction runs through almost every health headline you read. Wine drinkers were healthier — but the wine was not the reason. Sorting real causes from tag-alongs is most of the work in medical research.

半满的玻璃杯:为什么科学正向“有益心脏健康”的饮酒习惯挥手告别

Caveolar Transcytosis

定义

Caveolar transcytosis is a process by which LDL and other ApoB-containing lipoprotein particles are transported across the endothelial cell layer into the arterial wall via small membrane-bound vesicles called caveolae; receptors including LDLR, SR-B1, and ALK1 participate in this pathway, and higher blood ApoB concentrations increase the rate of particle entry in a concentration-dependent manner.

为什么这很重要

This mechanism explains at a molecular level why very high ApoB concentrations overwhelm the artery's defenses and drive plaque formation regardless of metabolic fitness.

Read: Does metabolic health protect you from high cholesterol?

CCTA (Coronary CT Angiography)

定义

Coronary CT angiography is a non-invasive imaging test that uses X-ray computed tomography to produce detailed pictures of the coronary arteries, allowing doctors to detect and characterize both calcified and non-calcified plaque without inserting a catheter.

为什么这很重要

It is the key imaging tool used to detect the 'silent' plaque buildup described in athletes throughout the article.

Read: Do endurance sports help or hurt arteries?

Cellular Senescence

定义

Cellular senescence is a state in which damaged cells permanently stop dividing but remain metabolically active, secreting inflammatory signals that can promote local tissue damage; in aging arteries, senescent cells cluster at plaque sites and contribute to chronic low-grade vascular inflammation.

为什么这很重要

Senescent cells are one of the key mechanisms by which aging adds cardiovascular risk beyond simple cholesterol exposure.

Read: Heart disease accelerates as you age

CENIT Trial

定义

The CENIT (Coronary Disease and the Effect of High-Intensity Interval Training) trial was a randomized study of 60 patients with stable coronary artery disease that used intravascular ultrasound to measure whether six months of supervised HIIT at 85–95% of peak heart rate changed plaque volume compared with standard care. It found HIIT reduced percent atheroma volume by 1.2% and total normalized…

为什么这很重要

It is one of the few trials showing exercise can shrink measurable plaque in people already on heart medication.

Read: Exercise Doesn’t Erase Arterial Plaque – It Turns It to Stone!

Central Governor Theory

定义

A model of fatigue proposing that the brain anticipates physiological limits and reduces muscle recruitment before the body actually reaches failure, acting as a protective regulatory system rather than allowing true muscular exhaustion.

为什么这很重要

It reframes fatigue as a negotiable brain signal rather than a fixed physical wall, with implications for how athletes and cardiac rehab patients push through perceived limits.

Read: The Hour That Would Not End

Centrifugal Force (in Velodrome Banking)

定义

The outward pseudo-force experienced by a rider as the banked track redirects the bicycle through a curve; on steeply banked velodromes the effective gravitational load on the rider can approach twice normal body weight, imposing additional cardiovascular and musculoskeletal stress.

为什么这很重要

Repeated high G-force loading in each lap raises physical strain during sustained maximal cardiac output, relevant to any athlete managing heart disease.

Read: Cyclist Peter Megdal seeks out, and overcomes, difficult obstacles

Cerebral Amyloid Angiopathy (CAA)

定义

Cerebral amyloid angiopathy is a condition in which amyloid-beta protein deposits accumulate in the walls of small blood vessels in the brain, weakening them and predisposing to microbleeds and impaired blood flow.

为什么这很重要

CAA illustrates how vascular and amyloid pathology directly overlap in the brain, complicating the separation of 'pure' Alzheimer's from vascular dementia.

阿尔茨海默病其实始于你的动脉吗?

Cerebral Small Vessel Disease (CSVD)

定义

Cerebral small vessel disease refers to a spectrum of pathological changes affecting the small arteries, arterioles, capillaries, and venules of the brain, distinct from large-artery atherosclerosis in its drivers and manifestations. It produces white-matter lesions, lacunar infarcts, and contributes to cognitive decline and vascular dementia.

为什么这很重要

CSVD illustrates that arterial disease is not confined to the heart—the same risk factors silently damage the brain's tiny vessels, linking cardiovascular and cognitive health.

从子宫到逆转:消除一生的动脉损伤

Cerebrovascular Disease

定义

Disease affecting the blood vessels supplying the brain, including stroke; cited alongside cardiovascular disease as an outcome reduced by vegetarian and vegan diets in an umbrella review of meta-analyses.

为什么这很重要

Shows that the cardiovascular benefits of plant-based diets extend beyond the heart to include brain circulation.

Read: Q&A: Can Your Love for Red Meat Be Dangerous?

CERTAIN研究

定义

A clinical study evaluating the impact of AI-QCT coronary plaque analysis on physician treatment decisions; it found that AI-derived results changed management in 57.1% of patients, increasing statin use by 28.1%, aspirin prescribing by 23%, and reducing unnecessary downstream testing by 37%.

为什么这很重要

It demonstrates that AI imaging translates into concrete changes in patient care, not merely better pictures.

一种无需手术透视心脏的新方法——预测心脏病发作的最佳途径

胆固醇酯转移蛋白

定义

CETP is a protein that swaps cholesterol and triglycerides between HDL and the harmful ApoB particles.

为什么这很重要

Blocking it raises HDL dramatically, so drug companies spent billions trying. Most of those drugs failed to prevent heart attacks, and one caused harm. It became the clearest evidence that raising HDL is not itself a treatment.

心血管保护的遗传架构

CETP Inhibitors

定义

A class of drugs designed to block cholesterol ester transfer protein, an enzyme that shuttles cholesterol from HDL to LDL particles; clinical trials such as ILLUMINATE and ACCELERATE showed that pharmacologically raising HDL-C this way did not reduce cardiovascular events, shifting the field's focus toward HDL function rather than concentration.

为什么这很重要

Their failure helped overturn the assumption that simply raising 'good cholesterol' numbers protects the heart.

接受过治疗的心房颤动大师级运动员(50岁以上)的心血管风险管理与训练调整:专家报告

CHA2DS2-VASc Score

定义

A clinical scoring tool used to estimate stroke risk in patients with atrial fibrillation, assigning points for risk factors such as age, sex, hypertension, diabetes, heart failure, prior stroke, and vascular disease; a score of 2 or higher typically triggers a recommendation for oral anticoagulation.

为什么这很重要

Knowing your score determines whether you must stay on blood thinners — a decision that directly affects which sports are safe to play.

接受过治疗的心房颤动大师级运动员(50岁以上)的心血管风险管理与训练调整:专家报告

Channelopathy

定义

A channelopathy is an inherited disorder of cardiac ion-channel proteins that disrupts the electrical signals controlling heart rhythm without producing any visible structural abnormality detectable at autopsy; examples include long QT syndrome and catecholaminergic polymorphic ventricular tachycardia.

为什么这很重要

Channelopathies can cause sudden death in a structurally normal heart, making them invisible to tests that look only for physical abnormalities.

如何避免英年早逝

中国-康奈尔-牛津三 A 共研究计划

定义

A large ecological study conducted in the 1980s comparing diet patterns, biomarkers, and disease mortality across rural Chinese counties with largely plant-based diets; it reported dramatically lower coronary artery disease mortality and substantially lower serum cholesterol levels in rural China compared with the United States.

为什么这很重要

This project is a foundational reference for the link between plant-dominant diets and lower cardiovascular mortality, though its ecological design limits causal inference.

素食主义真的能延年益寿吗?这是一个谎言吗?

中国老年健康影响因素跟踪调查

定义

A long-running longitudinal study of elderly and oldest-old adults in China, widely used to examine survival, diet, and healthspan in people aged 80 and above, including centenarians.

为什么这很重要

This is the primary source for the article's claim that strict vegetarian patterns may be associated with lower odds of reaching 100 in very old age.

素食主义真的能延年益寿吗?这是一个谎言吗?

CHIP (Clonal Hematopoiesis of Indeterminate Potential)

定义

CHIP is a condition in which a mutation in a bone marrow stem cell gives its descendants a growth advantage, so that a measurable fraction of a person's blood cells share that mutation; it becomes increasingly common with age and is associated with roughly a two-fold increase in coronary heart disease risk, likely because the mutant immune cells behave more aggressively in the artery wall.

为什么这很重要

CHIP is an under-recognized age-related mechanism that raises heart disease risk independently of traditional risk factors like cholesterol.

Read: Heart disease accelerates as you age

胆固醇外排能力

定义

Cholesterol efflux capacity is a laboratory test of how well someone's HDL actually pulls cholesterol out of cells — a measure of function rather than quantity.

为什么这很重要

It predicts risk better than the HDL number does, which supports the view that HDL quality is what matters. It remains a research test, not something you can order routinely.

接受过治疗的心房颤动大师级运动员(50岁以上)的心血管风险管理与训练调整:专家报告

Cholesterol Ester Transfer Protein

定义

See CETP for the full entry.

Cholesterol Synthesis

定义

Cholesterol synthesis is your body making its own cholesterol, mostly in the liver. Almost every cell can do it.

为什么这很重要

This is why cutting cholesterol out of your food does less than people expect — when you eat less, your body simply makes more. It is also why statins work: they slow the factory rather than blocking the food.

您的细胞会自行合成胆固醇——那为什么您的血液里到处都是它?

Cholesterol Treatment Trialists' (CTT) Collaboration

定义

A large-scale pooled analysis of randomized trials of LDL-lowering therapies that demonstrated each approximately 1 mmol/L reduction in LDL-C reduces major vascular events by just over one-fifth per year, with no evidence of a safe lower threshold, providing key quantitative support for treating elevated LDL-C.

为什么这很重要

It gives the specific numbers behind why LDL-raising from coconut oil is clinically relevant, not just a statistical abstraction.

椰子油作为健康食品的神话:行业如何左右你的饮食!

胆固醇年

定义

Cholesterol-years is a cumulative-exposure metric that multiplies a person's average LDL-C level (in mg/dL) by the number of years they have carried that level, analogous to pack-years for tobacco. The concept holds that it is the total lifetime burden of apoB-containing lipoproteins, not any single reading, that determines when and how severely atherosclerosis develops.

为什么这很重要

Understanding cumulative exposure explains why modest LDL levels sustained for decades can be more dangerous than high levels for a short period—and why early treatment matters far more than late treatment.

从子宫到逆转:消除一生的动脉损伤

Cholesteryl Ester

定义

Cholesteryl esters are storage forms of cholesterol in which a fatty acid is attached to cholesterol; they accumulate in large quantities inside foam cells and the extracellular spaces of plaques, and their depletion—measured as regression of the lipid-rich pool—is a primary marker of plaque improvement in primate regression studies.

为什么这很重要

Understanding what actually clears during reversal (cholesteryl ester pools, not fibrous or calcified tissue) sets realistic expectations for what treatment can achieve.

Read: Can heart disease be reversed?

Chondroitin Sulfate

定义

Chondroitin sulfate is a negatively charged glycosaminoglycan chain attached to arterial proteoglycans such as biglycan and versican; it binds ionically to the positively charged ApoB-100 protein on LDL particles, anchoring them in the subendothelial space and initiating the atherosclerotic process.

为什么这很重要

It is the molecular 'Velcro' that traps LDL in artery walls—a key reason why the arterial wall is not a passive bystander in heart disease.

年轻时(20多岁和30多岁)胆固醇高,即使日后降下来了,以后也会引发心脏病发作吗?

Chronic Metabolic Acidosis

定义

A sustained reduction in blood pH caused by an excess of acid-producing foods relative to base-producing foods; high animal-protein diets have been proposed to cause this state and thereby leach calcium from bones, though modern evidence does not support this mechanism when overall mineral intake is adequate.

为什么这很重要

This claim has been used to argue that high-protein diets harm bone health—knowing the evidence helps you weigh that concern.

Read: The Protein Debate

Chunking (Cognitive)

定义

A psychological strategy of breaking a large, overwhelming task into smaller, manageable units to reduce perceived difficulty and sustain motivation; used in cardiac rehabilitation and endurance sport to help patients and athletes continue through prolonged discomfort.

为什么这很重要

It provides a practical mental framework for managing pain and effort during extended physical or medical challenges.

Read: The Hour That Would Not End

Circumferential Wall Stress

定义

Circumferential wall stress is the tensile force acting around the circumference of an artery due to internal blood pressure; it rises with higher pressure and greater arterial diameter, and repeated extreme elevations during intense exercise may contribute to structural changes in the arterial wall.

为什么这很重要

The article identifies exercise-driven surges in this force—reaching up to 250 mmHg—as a potential driver of the mechanical remodeling that may facilitate atherogenesis in endurance athletes.

Read: Do endurance sports help or hurt arteries?

旋支动脉

定义

One of the two main branches of the left coronary artery, which curves around the back of the heart to supply the lateral and posterior left ventricular wall; the Megdal Serial Angiogram shows the Circumflex improved from mild-to-moderate narrowing (30–45%) in 2014 to improved patency below 20% in 2018, contributing to the evidence of diffuse, systemic regression.

为什么这很重要

Improvement in the Circumflex alongside the LAD shows the healing was not confined to one artery, strengthening the case for a true systemic effect.

Read: Expert Angiographic Evaluation of Coronary Artery Disease Regression: The Megdal Serial Angiogram (2014–2018)

CK (Creatine Kinase)

定义

Creatine kinase is an enzyme released from damaged muscle cells into the bloodstream; a markedly elevated blood CK level is used to confirm that muscle injury is genuine and pharmacological rather than purely symptom-based.

为什么这很重要

CK testing is the frontline blood test that helps doctors determine whether a patient's muscle pain is truly caused by a statin or by another source.

我应该服用降胆固醇药吗?当然应该。.

CLEAR Outcomes

定义

CLEAR Outcomes was a large trial that tested bempedoic acid in people who couldn't tolerate statins, to see whether it lowered heart attack and stroke risk the way statins do.

为什么这很重要

It did — event rates fell in step with the drop in LDL and ApoB, in a population that had few other options. It's the main outcome evidence behind recommending bempedoic acid rather than just a cholesterol-lowering pill with no proof of preventing events.

我应该服用降胆固醇药吗?当然应该。.

临床试验

定义

A clinical trial is a study where researchers give one group a treatment and another group a placebo or standard care, then compare what happens.

为什么这很重要

When people are assigned randomly, it is the most reliable way we have to find out if something truly works. Observational studies can only watch what people already do, which leaves room for other explanations.

每日阿司匹林究竟是在夺走你的生命还是在拯救你?最新科学研究怎么说。.

CMAH Gene

定义

The gene encoding the enzyme CMP-N-acetylneuraminic acid hydroxylase, which converts Neu5Ac to Neu5Gc in most mammals; humans carry an inactivating mutation in this gene and therefore cannot synthesize Neu5Gc.

为什么这很重要

Understanding why humans are uniquely vulnerable to dietary Neu5Gc requires knowing that a single gene mutation set us apart from other mammals.

Read: Q&A: Can Your Love for Red Meat Be Dangerous?

Cmah⁻/⁻ Ldlr⁻/⁻ Mouse Model

定义

A genetically engineered mouse that lacks both the CMAH gene (making it unable to produce Neu5Gc, like humans) and the LDL receptor gene (making it prone to high cholesterol and atherosclerosis); used to study how dietary Neu5Gc and anti-Neu5Gc antibodies affect plaque development.

为什么这很重要

This is the key experimental model providing mechanistic evidence that Neu5Gc may accelerate atherosclerosis, so understanding what it is helps evaluate the strength of that evidence.

Read: Q&A: Can Your Love for Red Meat Be Dangerous?

Coefficient of Drag Area (CdA)

定义

A combined measure of a rider's aerodynamic drag, calculated as the product of the drag coefficient and the frontal surface area; a lower CdA means less air resistance and faster speeds for the same power output.

为什么这很重要

In an hour record, aerodynamic efficiency can matter as much as raw power—even small reductions in CdA translate to significant distance gains.

精英老将自行车手的生理优化与寿命表现建模

Cohort (Clinical Cohort)

定义

A defined group of patients followed over time under similar conditions; Esselstyn's cohort, for example, consisted of patients with advanced coronary artery disease who agreed to follow a strict plant-based diet.

为什么这很重要

Knowing what a cohort is helps readers understand why results from a selected group may or may not generalise to the wider population.

Read: Can Diet Really Reverse Heart Disease?

COLCOT Trial

定义

COLCOT (Colchicine Cardiovascular Outcomes Trial) was a randomized trial in which low-dose colchicine, an anti-inflammatory drug, was given to patients shortly after a heart attack; it reduced the risk of a subsequent major cardiovascular event by 23% compared with placebo, establishing that targeting inflammation independently of cholesterol lowers cardiovascular risk.

为什么这很重要

It is one of the trials showing that fighting inflammation — not just lowering cholesterol — can prevent heart attacks.

健美、迅捷且险些丧命:世界级自行车手如何发现隐匿性心脏病

Collagen Cross-Linking

定义

A biochemical process in which collagen fibers within arterial walls form stable chemical bonds between adjacent molecules, reducing tissue elasticity and contributing to irreversible arterial stiffening; it is accelerated by sedentary behavior and advancing age.

为什么这很重要

This process explains why the window for reversing arterial stiffness closes after roughly age 65, creating the urgency for midlife intervention.

你的心脏比你更老吗?逆转心血管年龄的科学

Collateral Circulation

定义

Collateral circulation is a network of small backup blood vessels that can grow around a blocked artery, like a detour around a closed road.

为什么这很重要

People who develop good collaterals sometimes survive blockages that would otherwise be devastating. Long-term exercise appears to encourage them, which may be one reason very fit people can have severe disease without symptoms.

体质好如何掩盖心脏病发作

Collateral Flow Index (CFI)

定义

Collateral flow index is an invasive measurement obtained during balloon occlusion of a coronary artery that quantifies the proportion of normal antegrade blood flow supplied by collateral vessels. It is used in research to objectively assess how well the heart's backup circulation compensates for a blockage.

为什么这很重要

It provides a concrete number for how much protection the 'backup pipes' actually offer, and studies using CFI have shown both the benefits and strict limits of exercise-induced collateral growth.

运动如何阻断疼痛:运动员心脏的致命秘密

Compensatory Enlargement

定义

Compensatory enlargement, described by Glagov, is the outward expansion of an artery's wall as plaque accumulates inside it, allowing the channel where blood flows to remain relatively open despite substantial hidden disease; on modern CT imaging, this positive remodeling is considered a high-risk plaque feature associated with lipid-rich, potentially vulnerable plaque rather than evidence of hea…

为什么这很重要

It explains why a person can carry serious atherosclerosis yet have a nearly normal-looking angiogram — the disease hides in the wall, not the channel.

Read: What’s more important, diet vs drugs, or outcome vs regression?

Compensatory Outward Remodeling

定义

The process by which an artery expands its outer diameter to preserve luminal blood flow as plaque accumulates within the vessel wall; luminal narrowing is typically delayed until plaque occupies roughly 40% of the internal elastic lamina area, making early disease invisible to lumen-focused imaging.

为什么这很重要

It explains why standard imaging can report 'normal' arteries even when substantial plaque is already present inside the vessel wall.

Read: LDL “BAD” Cholesterol: Apolipoprotein B, Imaging Resolution, and the Illusion of “Normal” Coronary Arteries at Age 60

Compositional Stabilization

定义

Compositional stabilization refers to a shift in plaque biology away from a lipid-rich, inflamed, rupture-prone state toward a denser, less active state, achieved through ApoB lowering or anti-inflammatory treatment; it reduces the likelihood of a plaque triggering an acute coronary event without necessarily shrinking the total plaque volume visible on imaging.

为什么这很重要

It reframes the goal of treatment from 'making plaque disappear' to 'making plaque less dangerous.'

Read: What is the difference between Mediterranean and whole-food plant-based diets for heart disease?

Compound Heterozygous

定义

Compound heterozygous describes a genetic state in which an individual inherits two different pathogenic mutations in the same gene—one from each parent—rather than two copies of the identical mutation; in HoFH, compound heterozygosity for two distinct LDLR mutations still abolishes or severely impairs LDL receptor function and produces the full HoFH phenotype.

为什么这很重要

Most HoFH patients are compound heterozygotes rather than true homozygotes, which affects genetic testing strategies and family screening.

Read: Children With 60-Year-Old Arteries: The Extreme Reality of HoFH

Concentration-Time Exposure

定义

Concentration-time exposure, in the context of atherosclerosis, refers to the cumulative dose of ApoB-containing particles that an artery wall has experienced over time — the product of how high the particle level is and how many years it has been elevated — rather than a single snapshot measurement.

为什么这很重要

It explains why a person's lifetime cholesterol history matters far more than one test result, and why starting lipid lowering early has such a large long-term benefit.

Read: What’s more important, diet vs drugs, or outcome vs regression?

CONFIRM Registry

定义

A large international multicenter registry study of patients undergoing coronary CT angiography that documented the prevalence and clinical significance of coronary artery disease — including adverse events — even among patients whose coronary artery calcium score was zero.

为什么这很重要

The CONFIRM data underpin the warning that a zero calcium score can still coexist with dangerous plaque, a finding directly relevant to people with inherited cardiac risk.

双倍剂量:你的家谱是生物危险品吗?这里有拯救生命的信息

CONFIRM2 登记处

定义

A large, multinational registry of over 6,000 patients in which AI-quantified coronary plaque features were evaluated for their ability to predict major adverse cardiovascular events; the registry showed that AI-derived plaque analysis improved the area under the ROC curve for event prediction from 0.62 to 0.75 compared with standard methods.

为什么这很重要

CONFIRM2 is the primary evidence the article cites that AI-QCT measurably improves risk prediction beyond existing tools.

Read: The Future of Heart Disease Management

Confounder

定义

A confounder is a variable that is associated with both the exposure being studied (such as TMAO) and the outcome (such as heart disease), making it appear as though one causes the other when a third factor is actually responsible. The article lists renal function, insulin resistance, systemic inflammation, and age as major confounders that inflate the apparent cardiovascular risk of high TMAO in…

为什么这很重要

Confounding is the central methodological problem that explains why the TMAO-heart disease link looks stronger in some studies than the genetic evidence supports.

红肉正在通过你的肠道杀死你吗?关于TMAO的大骗局

Conjugated Equine Estrogens (CEE)

定义

Conjugated equine estrogens are a mixture of estrogen compounds derived from horse urine and taken as an oral pill; they were the form of estrogen used in the WHI trial, and unlike bioidentical estradiol, they undergo hepatic first-pass metabolism and raise coagulation factors.

为什么这很重要

Distinguishing CEE from modern bioidentical estradiol patches is essential for interpreting the WHI results correctly.

Read: Does The New Estrogen Patch Prevent Heart Disease? The Complex Truth Explained

Constrictive Remodeling

定义

A paradoxical shrinkage of the external elastic membrane that can accompany plaque regression, causing the vessel wall to contract inward rather than expand outward; the result is that lumen size stays the same or even decreases even as total plaque volume falls.

为什么这很重要

It explains why successful plaque-shrinking therapy does not always widen the artery or relieve symptoms, a counterintuitive finding patients and clinicians need to understand.

Read: Reversal of Coronary Atherosclerosis: Mechanistic Insights from Human and Primate Studies

Convective Cooling

定义

The removal of body heat by the movement of air or fluid across the skin; at altitude the lower air density reduces convective heat loss, raising core temperature and impairing muscle efficiency during exercise.

为什么这很重要

Reduced convective cooling at altitude or in hot environments accelerates fatigue and directly limits cardiovascular performance.

Read: The Hour That Would Not End

Convolutional Neural Network (CNN)

定义

A class of deep-learning architecture designed to detect spatial patterns in image data; in AI-QCT, CNNs are trained on large coronary CT datasets with invasive validation to recognize and classify plaque components automatically.

为什么这很重要

CNNs are the computational engine that allows AI-QCT to outperform human readers in identifying high-risk plaque.

Read: The Future of Heart Disease Management

库珀中心纵向研究

定义

A long-running prospective observational study based at the Cooper Clinic in Dallas that has followed a large cohort of patients over decades and contributed foundational data on the association between family history and coronary heart disease death in men.

为什么这很重要

Research from this study is part of the evidence base showing that a family history of cardiac death predicts long-term coronary risk independently of other standard risk factors.

双倍剂量:你的家谱是生物危险品吗?这里有拯救生命的信息

哥本哈根婴儿心脏研究

定义

A large Danish cohort study that analyzed lipid and lipoprotein concentrations in over 13,000 cord blood samples with longitudinal follow-up, providing normative reference data for cholesterol trajectories from birth through the first 14–16 months of life.

为什么这很重要

It established that babies reach near-adult LDL-C and ApoB levels far earlier than anyone expected—reframing when cardiovascular risk actually begins.

Read: Do Babies Need Statins?

哥本哈根一般人群研究

定义

A very large Danish study that measured lipids, including Lp(a) and remnant cholesterol, in tens of thousands of people and followed their health for years.

为什么这很重要

Denmark's national health records make follow-up unusually complete. Much of what we know about remnant cholesterol and Lp(a) as independent risks comes from this dataset.

载脂蛋白B:更长、更高、更糟

COPII Vesicles

定义

Small membrane-bound transport carriers (typically 60–80 nm in diameter) that bud from the endoplasmic reticulum to ferry newly synthesized proteins to the Golgi apparatus; their limited size means large molecules such as procollagen require specialized machinery like TANGO1 to exit the ER.

为什么这很重要

Understanding COPII size constraints explains why the MIA3/TANGO1 pathway is indispensable for collagen secretion and plaque stability.

阅读:基因彩票:为什么你不能指望自己“刀枪不入”

CoQ10 (Coenzyme Q10)

定义

CoQ10 is a compound your cells use to help generate energy in the mitochondria. Statins reduce production of it slightly, since it shares a manufacturing pathway with cholesterol.

为什么这很重要

It's the basis for a popular but poorly substantiated claim that statins cause fatigue and muscle pain by depleting CoQ10 — a theory sold hard by supplement marketers, though trials haven't shown that supplementing it actually prevents statin symptoms.

我应该服用降胆固醇药吗?当然应该。.

CORDIOPREV Trial

定义

CORDIOPREV is a randomized controlled trial that compared a Mediterranean diet to a modestly low-fat diet (approximately 28–30% of calories from fat) in patients with established coronary artery disease; it confirmed Mediterranean dietary superiority over that comparator but did not test the ultra-low-fat (

为什么这很重要

It is the main secondary RCT for the Mediterranean diet in patients with existing heart disease, and its limitations in scope are relevant to understanding what the evidence does and does not show.

阅读:已被证实唯一能消除动脉斑块的饮食(不是地中海饮食!)

冠状动脉旁路移植术

定义

CABG is an open-heart surgical procedure in which a surgeon uses a blood vessel harvested from elsewhere in the body—typically a leg vein or chest-wall artery—to create a new route for blood flow around a blocked coronary artery.

为什么这很重要

Understanding CABG helps patients grasp why surgery is sometimes recommended over stenting, particularly when multiple arteries are severely diseased.

治疗生物学而非管道:心脏病学激进的新方法

冠状动脉钙化

定义

Coronary artery calcium is a measure of calcified plaque deposits in the walls of the coronary arteries, quantified by CT scan and expressed as an Agatston score; higher scores indicate greater cumulative plaque burden and predict future cardiovascular events.

为什么这很重要

Studies discussed in the article use CAC as the primary marker showing that lifelong endurance athletes can have paradoxically high plaque burden.

Read: Do endurance sports help or hurt arteries?

Coronary Artery Calcium (CAC) Scoring

定义

A non-contrast, ECG-gated CT scan that detects and quantifies calcified plaque in the coronary arteries; the resulting Agatston score reflects the extent of coronary calcification and serves as a direct, disease-based measure of atherosclerotic burden rather than a statistical estimate of risk.

为什么这很重要

Understanding what the score actually measures—and what it can miss—is essential for interpreting your own results or those of a fit, seemingly healthy patient.

Read: Coronary Calcium and Athletic Risk

冠状动脉钙化积分

定义

A coronary artery calcium score, or CAC score, comes from a quick CT scan that measures how much hardened plaque is in your heart's arteries. No dye, no needles, about ten minutes.

为什么这很重要

A score of zero is genuinely reassuring for most middle-aged people. A high score means real disease is present, even if you feel perfectly fine. It is one of the few tests that can show you your disease instead of just estimating your odds.

医生没有为你开具的心脏检查

Coronary Artery Ectasia

定义

An abnormal, pathological dilation of a coronary artery segment beyond 1.5 times the diameter of an adjacent normal segment; the article explicitly rules it out as an explanation for the observed vessel widening in the Megdal angiograms, confirming the enlargement reflects true regression rather than disease-related over-expansion.

为什么这很重要

Distinguishing healthy regression from ectasia ensures the 'wider pipe' seen in the 2018 images is good news, not a different problem.

Read: Expert Angiographic Evaluation of Coronary Artery Disease Regression: The Megdal Serial Angiogram (2014–2018)

Coronary Artery Stenosis

定义

Narrowing of a coronary artery lumen, typically caused by atherosclerotic plaque, which reduces blood flow to the heart muscle; measured as a percentage of the original vessel diameter.

为什么这很重要

Stenosis is the structural abnormality that lifestyle trials aim to reduce, so knowing the term helps readers interpret claims about 'reversal.'

Read: Can Diet Really Reverse Heart Disease?

Coronary Atherosclerosis Regression

定义

A measurable reduction in the size or severity of atherosclerotic plaque within the coronary arteries, confirmed by imaging; the Ornish Lifestyle Heart Trial demonstrated regression after one year on a low-fat plant-based diet, with further improvement at five years.

为什么这很重要

Regression—rather than mere slowing of progression—is the gold standard outcome that distinguishes the most effective cardiovascular interventions.

营养学大辩论:原始人饮食法/生酮饮食/旧石器饮食与全食物植物性饮食对长寿和心脏病影响的循证现实

Coronary Care Unit (CCU)

定义

A coronary care unit is a specialised hospital ward where heart-attack patients are continuously monitored for dangerous heart rhythms and can be defibrillated immediately if one occurs. Introduced in the early 1960s, it was the single biggest step forward in acute heart-attack survival before modern drugs arrived.

为什么这很重要

The CCU demonstrated that continuous monitoring and rapid defibrillation — not drugs or surgery — drove the first major improvement in surviving a heart attack.

心血管疾病史

冠状动脉CT血管造影

定义

Coronary CT angiography, or CCTA, is a CT scan done with dye in your veins that produces detailed pictures of your heart's arteries.

为什么这很重要

Unlike a calcium scan, it can see soft plaque as well as hard plaque, and unlike an invasive angiogram it requires no catheter. It shows both how narrow an artery is and what the plaque is made of.

Read: You Feel Fine – That’s the Problem

Coronary Heart Disease

定义

Coronary heart disease is the narrowing or blockage of the arteries that supply blood to the heart muscle, caused by the buildup of atherosclerotic plaque; it is the leading cause of heart attack and cardiac death worldwide.

为什么这很重要

It is the underlying condition the entire article is about, and knowing its formal name helps readers follow medical sources and statistics.

Read: You Feel Fine – That’s the Problem

Coronary Imaging

定义

Non-invasive or invasive techniques—such as quantitative coronary angiography or intravascular ultrasound—used to visualise the size and character of plaques inside the coronary arteries; the Ornish and Esselstyn work is notable for using objective coronary imaging rather than relying solely on symptom or event data.

为什么这很重要

Regression of atherosclerosis demonstrated by imaging carries more direct mechanistic weight than event counts alone, which is why the article emphasises it.

生酮饮食 vs. 全食植物性饮食:关于运动表现、胰岛素敏感性、逆转心脏病和长寿的硬核证据是什么?

Coronary Microvascular Dysfunction (CMD)

定义

Coronary microvascular dysfunction is impaired function of the tiny arterioles and capillaries supplying the heart muscle, resulting in reduced blood flow and exercise intolerance even when the major coronary arteries appear normal on angiography.

为什么这很重要

CMD can cause symptoms and limit performance in older athletes whose large-artery tests come back clean, making it an easy-to-miss contributor to exercise intolerance.

体质好如何掩盖心脏病发作

Coronary Thrombosis

定义

Coronary thrombosis is the formation of a blood clot inside a coronary artery, blocking blood flow to the heart muscle — the underlying event in most heart attacks. It was first described as a recognisable clinical syndrome in a living patient in 1912.

为什么这很重要

Understanding that a clot, not just a diseased artery, triggers the acute event explains why clot-dissolving drugs and antiplatelet therapies became central to heart-attack treatment.

心血管疾病史

Coronary Vasospasm

定义

A sudden, intense, transient constriction of an epicardial coronary artery severe enough to halt blood flow and cause myocardial ischemia or infarction, which typically resolves before angiography is performed, leaving an apparently normal-looking vessel.

为什么这很重要

Vasospasm is one of the key 'invisible' causes of MINOCA—it causes real heart damage yet leaves no lasting obstruction for standard tests to detect.

隐匿性梗死:MINOCA机制、诊断与管理的深入研究验证

Cortisol Awakening Response

定义

The cortisol awakening response (CAR) is the sharp rise in cortisol that normally occurs in the 30–45 minutes after waking, and is used as a measure of how well the HPA axis is functioning. The article notes that in Whitehall II the CAR did not predict cardiovascular mortality, whereas a flatter diurnal cortisol slope did.

为什么这很重要

Understanding what cortisol patterns actually matter — and which ones don't — helps you evaluate claims about stress hormones and heart risk.

Read: Does stress kill you and does meditation save you?

COURAGE Trial

定义

The Clinical Outcomes Utilizing Revascularization and Aggressive Drug Evaluation trial randomized 2,287 patients with stable coronary artery disease to PCI plus optimal medical therapy or medical therapy alone, finding no significant difference in death or heart attack rates over up to 15 years of follow-up.

为什么这很重要

It is the landmark study showing that stents do not help most stable heart disease patients live longer than medication and lifestyle changes alone.

治疗生物学而非管道:心脏病学激进的新方法

COVID-19 (SARS-CoV-2 Infection) and Exercise Capacity

定义

COVID-19 infection is associated with transient reductions in cardiopulmonary fitness, VO₂ max, and muscular endurance; even after acute illness resolves, residual fatigue and reduced aerobic capacity can persist for weeks and pose risks if high-intensity exercise is resumed prematurely.

为什么这很重要

Returning to strenuous exercise after COVID-19 carries specific cardiovascular risks, including myocarditis, that are important for heart health readers to understand.

阅读:彼得·梅格达尔 2022 年一小时纪录挑战

COX-1 (Cyclooxygenase-1)

定义

COX-1 is an enzyme found in platelets that produces thromboxane A₂, a chemical that promotes platelet clumping and blood vessel narrowing; aspirin permanently blocks COX-1 by chemically modifying a specific site (Ser-530) in the enzyme, which is the molecular basis of aspirin's antiplatelet effect.

为什么这很重要

Knowing what COX-1 does clarifies exactly how aspirin prevents clots—and why its inhibition carries both benefit and bleeding risk.

每日阿司匹林究竟是在夺走你的生命还是在拯救你?最新科学研究怎么说。.

Cramping (Exercise-Associated Muscle Cramp)

定义

An involuntary, painful muscle contraction that can occur during prolonged maximal exercise, often associated with fatigue and electrolyte shifts; in the article, Megdal begins cramping in the final minutes of his hour-long maximal effort.

为什么这很重要

Muscle cramping near peak exertion is a signal of physiological stress relevant to anyone pushing cardiovascular limits during exercise.

Read: Peter Megdal interviewed in Dedham Times

Creatine Kinase (CK)

定义

An enzyme released into the bloodstream when muscle cells are damaged; elevated CK levels are used as a biomarker of skeletal muscle injury, and statin use—especially around intense exercise—can raise CK beyond the elevation caused by training alone.

为什么这很重要

The key lab marker used to distinguish statin-related muscle damage from normal exercise-induced soreness in athletes.

阅读:《运动员的胆固醇:如何在不影响竞技状态的情况下降低低密度脂蛋白(LDL)》(他汀类药物实用指南)

CREDENCE 试验

定义

A prospective trial of 513 patients that compared AI-assisted CCTA analysis with invasive quantitative coronary angiography and fractional flow reserve, demonstrating high concordance and supporting AI-QCT as a viable non-invasive substitute for catheter-based ischemia assessment.

为什么这很重要

CREDENCE directly validates that an AI scan can replace expensive, invasive procedures for judging whether a blockage is flow-limiting.

Read: The Future of Heart Disease Management

CRISPR碱基编辑

定义

A precision gene-editing technique that chemically converts a single DNA base (letter) in the genome to another without cutting the double strand, enabling permanent and targeted changes to a gene's function; in cardiovascular research it has been used in primates to permanently silence the PCSK9 gene in liver cells, producing lasting LDL reductions from a single treatment.

为什么这很重要

Base editing is the mechanism behind the 'one-and-done' gene therapy approach that could eventually eliminate the need for any ongoing cholesterol medication.

Read: The Cholesterol Breakthrough: From Daily Pills to Twice-a-Year Shots

Criterium

定义

A mass-start bicycle road race contested on a short, closed circuit—typically a city block or similar loop—requiring repeated tight cornering and making crash risk substantially higher than open-road events.

为什么这很重要

Understanding the format explains why finishing safely in a criterium is itself an achievement, separate from placing well.

Read: Peter Megdal gets second at National Championships

Critical Thinking

定义

In the context of health literacy, the disciplined habit of questioning the source, funding, and methodology behind medical claims before accepting them as fact.

为什么这很重要

Without it, patients are vulnerable to conflicting headlines and commercially motivated health advice.

Read: Peter Megdal on The Lynchpin Podcast

CT Angiogram (Coronary CTA)

定义

A non-invasive imaging test that uses computed tomography with intravenous contrast to produce detailed three-dimensional pictures of the coronary arteries, revealing both calcified and non-calcified (soft) plaque as well as luminal narrowing; it offers more information than a calcium score alone.

为什么这很重要

The article specifically recommends CT angiography over a calcium score because it detects soft plaque that a calcium scan would miss.

资深运动员的心脏病:我是如何逆转动脉阻塞并在65岁打破世界纪录的

冠状动脉CT血管造影

定义

CT coronary angiography (also called coronary CT angiography or CCTA) is a non-invasive imaging test that uses a CT scanner and injected contrast dye to produce detailed images of the coronary arteries, revealing both calcified and non-calcified (soft) plaques as well as the degree of any narrowing.

为什么这很重要

Unlike a calcium scan, it shows the type and texture of plaque, helping identify unstable lesions that pose the greatest rupture risk.

Read: You Feel Fine – That’s the Problem

CT-FFR (CT-Derived Fractional Flow Reserve)

定义

CT-FFR is a non-invasive technique that applies computational fluid dynamics to coronary CT angiography data to estimate the functional significance of a coronary stenosis without an invasive catheter. It helps determine whether an anatomical narrowing seen on imaging is actually restricting blood flow enough to cause ischemia.

为什么这很重要

For athletes with high calcium scores or detected plaques, CT-FFR can clarify whether a narrowing is truly dangerous during peak-effort exercise.

运动如何阻断疼痛:运动员心脏的致命秘密

CTT 合作

定义

The Cholesterol Treatment Trialists' Collaboration pools the raw data from every major statin trial rather than just comparing published summaries.

为什么这很重要

With hundreds of thousands of patients, it produced the central finding of modern lipid care: each unit of LDL reduction buys a roughly proportional reduction in events, no matter how you achieve it.

我应该服用降胆固醇药吗?当然应该。.

Culprit Lesion

定义

The specific site within a coronary artery identified as the originating source of the acute ischemic event, which in MINOCA may represent plaque disruption, erosion, thrombus, or dissection detectable by intracoronary imaging even when angiography appears unobstructed.

为什么这很重要

Identifying the culprit lesion is crucial for directing the correct treatment in MINOCA rather than applying a one-size-fits-all approach.

隐匿性梗死:MINOCA机制、诊断与管理的深入研究验证

累积暴露

定义

Cumulative exposure is the total amount of harmful cholesterol particles your arteries have been soaked in across your entire life — how high, multiplied by how long.

为什么这很重要

This is the single most important idea on this site. Someone with a moderately high level since age 20 can end up with more damage than someone with a very high level starting at 55. Plaque adds up. Starting earlier matters more than starting harder.

从子宫到逆转:消除一生的动脉损伤

Cure Versus Reversal

定义

Curing a disease means stopping the process that causes it. Reversing means undoing damage that has already been done. They are not the same thing.

为什么这很重要

With heart disease you can stop the process almost completely by driving particle levels low enough. Undoing the existing plaque is slower and only partial. Being clear about which one is being promised matters a great deal when reading health claims.

Read: Can Heart Disease Be Cured?

Cynomolgus Macaque

定义

Cynomolgus macaques (Macaca fascicularis) are Old World monkeys highly sensitive to dietary cholesterol that rapidly develop advanced coronary lesions rich in collagen, elastin, and calcification; they have also been used to study how psychosocial stress and social hierarchy accelerate coronary atherosclerosis through sympathetic nervous system activation and elevated cortisol.

为什么这很重要

They illustrate that stress hormones, not just diet, can drive plaque development—relevant to anyone asking whether psychological stress affects heart risk.

Read: Can heart disease be reversed?

CYP7A1

定义

CYP7A1 (cholesterol 7-alpha-hydroxylase) is the rate-limiting liver enzyme that initiates the conversion of cholesterol to bile acids, representing the primary route by which the body eliminates cholesterol. Because the sterol ring cannot be broken down for energy, this hepatic conversion to bile acids is the main disposal mechanism.

为什么这很重要

Drugs and dietary factors that upregulate CYP7A1 activity can lower circulating cholesterol by increasing its conversion to bile acids for excretion.

百万美元分子:为什么你的身体为胆固醇付出巨资

Cystathionine β-Synthase (CBS)

定义

The enzyme that catalyzes the first step of transsulfuration, converting homocysteine to cystathionine with vitamin B-6 as a cofactor; inherited loss-of-function mutations in the CBS gene are the most common cause of classical homocystinuria and severe hyperhomocysteinemia.

为什么这很重要

CBS deficiency is the clearest proof that extremely high homocysteine damages arteries, making it central to understanding why the mild-range evidence looks so different.

补充L-甲基叶 folate + 活性B族维生素降低同型半胱氨酸能否帮助预防动脉粥样硬化并减少斑块?

返回顶部

D

dal-OUTCOMES Trial

定义

A randomized trial of dalcetrapib, a CETP inhibitor that raised HDL-cholesterol, which found no reduction in cardiovascular events after acute coronary syndrome, contributing to evidence that pharmacologically increasing HDL-C does not reliably translate into clinical benefit.

为什么这很重要

One of several trials showing that HDL elevation alone does not cancel out cardiovascular risk—directly undermining a key defense of coconut oil.

椰子油作为健康食品的神话:行业如何左右你的饮食!

达拉斯卧床休息与训练研究

定义

A landmark longitudinal study that measured cardiovascular changes in healthy young men after prolonged bed rest and then after exercise training; its 30-year follow-up showed that just 20 days of bed rest impaired cardiovascular capacity more than three decades of normal aging in the same individuals.

为什么这很重要

It is the foundational evidence that much of what we call heart aging is actually reversible deconditioning, not inevitable decline.

你的心脏比你更老吗?逆转心血管年龄的科学

DASH Diet

定义

The DASH (Dietary Approaches to Stop Hypertension) diet is a dietary pattern emphasizing fruits, vegetables, whole grains, low-fat dairy, and reduced sodium and saturated fat, originally developed and tested in randomized trials for its blood-pressure-lowering effects and subsequently studied for broader cardiovascular benefit.

为什么这很重要

It is one of the major named dietary patterns compared in evidence reviews of heart disease prevention.

Read: What is the difference between Mediterranean and whole-food plant-based diets for heart disease?

从头合成

定义

De novo synthesis refers to the construction of a molecule—here cholesterol—entirely from scratch within the cell, starting from small precursors such as acetyl-CoA, rather than acquiring it from the bloodstream or diet. The roughly 30-step pathway is so energetically costly that cells strongly prefer to take up circulating LDL when it is available.

为什么这很重要

Understanding whether a patient overproduces cholesterol or over-absorbs it determines which treatment—a statin or ezetimibe—is likely to work best.

百万美元分子:为什么你的身体为胆固醇付出巨资

Deep Neural Network (DNN)

定义

A type of machine-learning model with many layers of interconnected processing nodes that learns complex, non-linear patterns from large datasets; in cardiac imaging it is trained to detect and quantify plaque features on CT scans.

为什么这很重要

DNN-based analysis underlies the high diagnostic AUC figures quoted in the article and is the technical engine behind AI-assisted coronary plaque reading.

一种无需手术透视心脏的新方法——预测心脏病发作的最佳途径

Dependency Threshold

定义

The dependency threshold is an informal term for the VO₂ max level—roughly 18–20 mL·kg⁻¹·min⁻¹—below which a person lacks sufficient cardiorespiratory reserve to perform basic activities of daily living independently.

为什么这很重要

Knowing this threshold illustrates the direct link between measurable fitness and functional independence in old age.

现代医学能拯救一个久坐不动的人吗?持续40年的三胞胎实验

Descending Inhibitory Pathways

定义

Descending inhibitory pathways are neural circuits that originate in the brainstem and travel down the spinal cord to suppress pain signal transmission before it reaches conscious awareness. They are a key component of exercise-induced hypoalgesia and are strengthened by chronic endurance training.

为什么这很重要

They form part of the biological mechanism that elevates an athlete's pain threshold, potentially silencing the cardiac pain that should prompt urgent medical attention.

运动如何阻断疼痛:运动员心脏的致命秘密

DHA (Docosahexaenoic Acid)

定义

A long-chain omega-3 fatty acid with six double bonds that increases membrane fluidity and disorder; unlike EPA, it does not appear to inhibit oxidation of ApoB-containing lipoprotein particles and was not associated with cardiovascular event reduction in mixed EPA/DHA trials.

为什么这很重要

Distinguishing DHA from EPA helps explain why combination omega-3 supplements failed where purified EPA succeeded.

Read: Heart Disease and Fish Oil

糖尿病

定义

Diabetes is a condition where blood sugar stays too high, either because the body makes too little insulin or because it stops responding to the insulin it makes.

为什么这很重要

It roughly doubles heart disease risk. Part of that is the sugar damaging blood vessels, and part is that diabetes usually comes bundled with high triglycerides and a high particle count that a standard cholesterol test can miss.

不要再迷信低密度脂蛋白(LDL)!关于载脂蛋白B(ApoB)、胰岛素抵抗与糖尿病的真相

糖尿病视网膜病变

定义

Diabetic retinopathy is damage to the small blood vessels in the retina caused by chronically elevated blood sugar; research has shown that ApoB particles can leak through the damaged blood-retinal barrier and deposit as 'hard exudates,' analogous to arterial plaque.

为什么这很重要

It highlights that controlling ApoB particle burden matters for preserving vision, not just preventing heart attacks.

为什么载脂蛋白B(ApoB)很重要?

直径狭窄

定义

Diameter stenosis is an angiographic measure of how much a coronary artery's lumen has been narrowed by plaque, expressed as a percentage of the vessel's original diameter; it is used in clinical trials as an objective marker of plaque progression or regression.

为什么这很重要

It is the key measurement used to confirm whether a dietary intervention actually shrinks arterial plaque rather than just improving blood markers.

阅读:已被证实唯一能消除动脉斑块的饮食(不是地中海饮食!)

Dietary Cholesterol

定义

Dietary cholesterol is the cholesterol in food — eggs, shrimp, liver, and other animal products.

为什么这很重要

For most people it has a surprisingly small effect on blood cholesterol, because the body compensates by making less. Saturated fat in food generally raises blood cholesterol more than cholesterol in food does. This is why egg advice kept flip-flopping for decades.

您的细胞会自行合成胆固醇——那为什么您的血液里到处都是它?

Diffuse Disease Reversal

定义

A pattern of atherosclerosis regression in which luminal widening occurs broadly across an entire arterial segment rather than only at a single focal stenosis; the Megdal study documents this via Average Lumen Diameter improvement between the standardized red tick marks on both the LAD and Circumflex, ruling out focal mechanical intervention as the cause.

为什么这很重要

Diffuse reversal proves the whole artery wall is healing, not just one spot that might have been stented.

Read: Expert Angiographic Evaluation of Coronary Artery Disease Regression: The Megdal Serial Angiogram (2014–2018)

DISCO-CT

定义

DISCO-CT was a randomized imaging trial that added a DASH-centered diet and lifestyle program to optimal medical therapy and measured coronary plaque with CT; it found no difference in total plaque burden between groups but a greater reduction in a broadly defined non-calcified plaque component in the diet group.

为什么这很重要

It is one of the few controlled trials to look at whether diet changes actual plaque on a CT scan, and its mixed results illustrate how hard that question is to answer.

Read: What’s more important, diet vs drugs, or outcome vs regression?

不和谐

定义

See ApoB Discordance for the full entry.

Disease Reversal (Cardiovascular)

定义

A process in which measurable markers of cardiovascular disease—such as arterial plaque burden or coronary stenosis—improve significantly in response to intensive lifestyle modification, nutrition, and/or medical therapy, to the point where the disease no longer produces symptoms or detectable progression.

为什么这很重要

Distinguishing reversal from mere stabilization is important for patients setting realistic goals for lifestyle and medical intervention.

Read: Peter Megdal sets new World Record

Diurnal Cortisol Slope

定义

The diurnal cortisol slope is the rate at which cortisol falls from its morning peak to its evening low over the course of a day. A flatter slope — meaning cortisol stays too high into the evening — has been associated in some studies with worse cardiovascular outcomes, including cardiovascular mortality in the Whitehall II cohort.

为什么这很重要

It shifts the conversation from 'is my cortisol high?' to 'is my cortisol rhythm healthy?' — a more meaningful question for heart health.

Read: Does stress kill you and does meditation save you?

DMB (3,3-Dimethyl-1-Butanol)

定义

DMB (3,3-dimethyl-1-butanol) is a naturally occurring compound found in some olive oils that acts as a competitive inhibitor of the microbial TMA lyase enzyme (CutC/D), reducing TMA and TMAO production without killing gut bacteria and thereby avoiding the risk of antibiotic resistance.

为什么这很重要

DMB represents a new class of targeted, non-antibiotic interventions that could lower cardiovascular risk by modulating the microbiome.

牛排中的隐形毒素:肠道细菌如何引发心脏病

DNAmFitAge

定义

An epigenetic biological-age model that integrates DNA methylation patterns with measures of cardiorespiratory fitness to estimate how physiologically 'young' an individual is relative to their chronological age.

为什么这很重要

It offers a way to quantify the anti-aging effect of high fitness levels beyond simple performance metrics.

精英老将自行车手的生理优化与寿命表现建模

DOCK4(细胞松弛素同源蛋白4)

定义

A guanine nucleotide exchange factor that is recruited to the cytoplasmic domain of SR-B1 following LDL binding, and activates the small GTPase Rac1 to trigger actin cytoskeleton remodeling required for endothelial transcytosis of LDL particles.

为什么这很重要

DOCK4 is a key link in the molecular chain that moves LDL from the bloodstream into the artery wall—blocking any step in this chain could reduce plaque formation.

阅读:基因彩票:为什么你不能指望自己“刀枪不入”

Donanemab

定义

Donanemab is an anti-amyloid monoclonal antibody that targets a modified form of amyloid-beta and, like lecanemab, has been shown to remove plaques and modestly slow Alzheimer's progression in clinical trials, with similar risks of brain swelling and bleeding.

为什么这很重要

Alongside lecanemab, it confirms amyloid removal is achievable but not curative, reinforcing the case that other upstream causes — including vascular disease — must be addressed.

阿尔茨海默病其实始于你的动脉吗?

DOPS Trial

定义

The Danish Osteoporosis Prevention Study (DOPS) was a randomized trial in which women who had just started menopause took oral hormone therapy for ten years; at follow-up, the hormone group had roughly half the rate of major cardiovascular events or death compared with the placebo group, providing one of the strongest hard-outcome signals for early hormone initiation.

为什么这很重要

DOPS is one of the few randomized trials reporting actual heart attacks and deaths as endpoints, not just surrogate measures.

Read: Does The New Estrogen Patch Prevent Heart Disease? The Complex Truth Explained

Dose-Response Relationship

定义

A dose-response relationship describes how the magnitude of a biological effect changes as the amount of an exposure (such as weekly exercise minutes) increases; in this article, resistance training shows a non-linear dose-response for mortality, with benefits plateauing around 120 minutes per week and a J-shaped curve emerging at very high volumes in older women.

为什么这很重要

Knowing that 'more is not always better' is one of the article's central practical messages.

Read: Can pumping iron help your pumping heart?

DPP-4 Inhibitor

定义

A DPP-4 inhibitor is an oral medication that blocks the enzyme dipeptidyl peptidase-4, which normally degrades the body's own GLP-1; by slowing GLP-1 breakdown, these pills raise endogenous GLP-1 levels by only two- to threefold — far less than injectable GLP-1 receptor agonists — and large trials such as SAVOR-TIMI 53 found they do not reduce cardiovascular events.

为什么这很重要

The article uses DPP-4 inhibitors to explain why the dose and potency of GLP-1 activation matters for heart protection, not just the drug class.

Read: Ozempic and Mounjaro: Saving Your Heart BEFORE the Scale Moves

Drug Doping Test (Anti-Doping Control)

定义

A urine or blood sample collected by officials after a competition to screen for prohibited performance-enhancing substances under the rules of the governing body; athletes setting national or world records are routinely tested to validate the result.

为什么这很重要

Anti-doping testing ensures that record performances reflect genuine cardiovascular and physiological capacity rather than pharmacological enhancement.

Peter Megdal 于 2021 年 10 月 14 日创造了全国小时计时赛纪录

Drug-Eluting Stent (DES)

定义

A drug-eluting stent is a small metal mesh tube coated with a medication that is inserted into a narrowed coronary artery to hold it open; the drug coating slowly releases an agent that inhibits scar tissue growth inside the stent, reducing the risk of the vessel re-narrowing.

为什么这很重要

DES are the modern stents used in the trials discussed here; understanding their design helps explain why they were expected to outperform earlier bare-metal stents in preventing re-blockage.

治疗生物学而非管道:心脏病学激进的新方法

Dual Antiplatelet Therapy (DAPT)

定义

The combined use of two platelet-inhibiting drugs—typically aspirin and clopidogrel—prescribed after stent implantation to prevent clot formation inside the stent, usually continued for approximately six months after a drug-eluting stent procedure.

为什么这很重要

DAPT is essential after stenting but carries its own risk of serious bleeding, illustrating the ongoing trade-offs patients and physicians must weigh.

Read: The Ins and Outs of Cardiac Stents

Dual GIP/GLP-1 Receptor Agonist

定义

A dual GIP/GLP-1 receptor agonist is a drug — tirzepatide being the leading example — that simultaneously activates receptors for both glucagon-like peptide-1 and glucose-dependent insulinotropic polypeptide, two incretin hormones, producing greater weight loss, lipid improvement, and metabolic benefit than GLP-1 receptor agonism alone.

为什么这很重要

Knowing that tirzepatide targets two receptors explains why its weight-loss and metabolic effects often exceed those of older GLP-1 drugs.

Read: Ozempic and Mounjaro: Saving Your Heart BEFORE the Scale Moves

返回顶部

E

Early Trial Termination

定义

Early trial termination occurs when a clinical study is stopped before its planned endpoint, often because interim data appear strongly favorable; this practice tends to inflate the apparent magnitude of treatment effects and reduce the reliability of the findings.

为什么这很重要

PREDIMED was stopped early, which is one reason the article argues its reported 30% risk reduction should be interpreted with caution.

阅读:已被证实唯一能消除动脉斑块的饮食(不是地中海饮食!)

EBBINGHAUS Study

定义

A prospective neurocognitive substudy of the FOURIER trial that used objective cognitive testing in nearly 2,000 patients to assess whether evolocumab-driven LDL lowering affected memory or cognition, finding no meaningful difference versus placebo over a median follow-up of 19 months.

为什么这很重要

It is the most direct clinical trial evidence on whether very low LDL harms brain function.

Read: Cholesterol: How Low is Too Low?

Eccentric Remodeling

定义

Eccentric remodeling is the adaptive enlargement and strengthening of the heart's ventricular walls that occurs in response to sustained aerobic exercise, resulting in a larger stroke volume and greater cardiac output; it is distinct from the pathological enlargement seen in heart disease.

为什么这很重要

This healthy structural change is a key reason fit people have greater cardiac reserve and lower mortality risk.

现代医学能拯救一个久坐不动的人吗?持续40年的三胞胎实验

ECG-Gated CT

定义

A CT imaging technique that synchronizes image acquisition to the electrical signal of the heart recorded by an electrocardiogram, minimizing motion blur so that coronary structures can be measured accurately; it is the standard method for CAC scoring.

为什么这很重要

ECG gating is what allows the scanner to capture sharp images of constantly moving coronary arteries.

零的力量:没有钙 – 没有风险?

Echocardiogram

定义

An echocardiogram is an ultrasound picture of your heart. A technician moves a probe across your chest and sound waves build a moving image of the chambers and valves.

为什么这很重要

It shows how well the heart is pumping and whether the valves are working. It does not show plaque in the coronary arteries, so a normal echo does not mean your arteries are clear.

异位脂肪

定义

Ectopic fat refers to lipid deposits that accumulate in organs not designed for fat storage — including the liver, pancreas, skeletal muscle, and myocardium — causing local lipotoxicity and impairing organ function when subcutaneous storage capacity is overwhelmed.

为什么这很重要

Fat in the liver or heart muscle is directly harmful to those organs in ways that fat under the skin is not.

阅读:为什么腹部脂肪比你想象的更危险

Effective Arterial Elastance (Ea)

定义

A measure of the total afterload—the resistance and pressure load—that the left ventricle must overcome to eject blood into the aorta; as central arteries stiffen with age or inactivity, Ea rises, forcing the heart to work harder with each beat.

为什么这很重要

Rising afterload from stiff arteries is a key pathway to heart failure, so understanding Ea explains why arterial stiffness matters beyond just blood pressure.

你的心脏比你更老吗?逆转心血管年龄的科学

Effective Refractory Period (ERP)

定义

The minimum time interval after an electrical impulse during which cardiac tissue cannot be re-stimulated; alcohol acutely shortens the atrial ERP, particularly in the pulmonary veins, making the heart more susceptible to the re-entrant electrical circuits that underlie atrial fibrillation.

为什么这很重要

Shortening of this period is a key electrical mechanism by which even modest alcohol exposure raises arrhythmia risk.

半满的玻璃杯:为什么科学正向“有益心脏健康”的饮酒习惯挥手告别

Efferocytosis

定义

Efferocytosis is the housekeeping process by which immune cells clear away other cells that have died.

为什么这很重要

Inside a plaque this cleanup fails. Dead foam cells pile up instead of being removed, and that debris becomes the necrotic core. Restoring the cleanup is an active area of drug research.

Read: Can heart disease be reversed?

EGF-A Domain (of the LDL Receptor)

定义

The epidermal growth factor-like repeat A domain of the LDL receptor to which PCSK9 binds; this binding targets the receptor for lysosomal degradation rather than recycling, and is the molecular site interrupted by PCSK9 inhibitor drugs.

为什么这很重要

Knowing the precise binding site clarifies how both monoclonal antibodies and CRISPR-based therapies disrupt PCSK9's action.

Read: Cholesterol: How Low is Too Low?

eGFR (Estimated Glomerular Filtration Rate)

定义

eGFR is a calculated measure of how efficiently the kidneys filter waste from the blood; because TMAO is cleared almost entirely by the kidneys, a falling eGFR causes TMAO to accumulate in the bloodstream independent of diet or gut bacteria. The article identifies reduced eGFR as the single largest confounder in studies linking high TMAO to cardiovascular events.

为什么这很重要

Without accounting for kidney function, studies can wrongly conclude that TMAO itself causes heart disease.

红肉正在通过你的肠道杀死你吗?关于TMAO的大骗局

Ejection Fraction

定义

Ejection fraction is the percentage of blood the main pumping chamber squeezes out with each beat. A normal value is somewhere around 55 to 70 percent.

为什么这很重要

A low number means the heart is not pumping strongly, often after a heart attack or from long-standing high blood pressure.

Elastin

定义

Elastin is a structural protein in the arterial wall that allows blood vessels to stretch and recoil with each heartbeat; with age it degrades and is replaced by stiffer collagen, contributing to arterial stiffening and rising systolic blood pressure.

为什么这很重要

Understanding elastin explains why arteries naturally stiffen with age and why blood pressure patterns change after 60.

Read: Heart disease accelerates as you age

Electrocardiogram

定义

An electrocardiogram — ECG or EKG — records your heart's electrical activity through stickers placed on your skin. It takes about a minute and is painless.

为什么这很重要

It can reveal rhythm problems, signs of a current or past heart attack, and some inherited electrical conditions that put young athletes at risk. It is a normal-looking test in many people who still have significant plaque.

如何避免英年早逝

ELITE Trial

定义

The ELITE trial (Early versus Late Intervention Trial with Estradiol) was a randomized trial of 643 women that tested whether starting oral estradiol early (fewer than six years after menopause) versus late (ten or more years after) produced different effects on carotid artery wall thickening; it found slower CIMT progression only in the early-initiation group, providing surrogate-level support f…

为什么这很重要

ELITE is the most direct randomized evidence for why starting hormones near menopause may matter for vascular health.

Read: Does The New Estrogen Patch Prevent Heart Disease? The Complex Truth Explained

Emergency Action Plan

定义

An emergency action plan is a written, practiced plan for what happens if someone collapses at a school, gym, or sporting event: who calls 911, who starts CPR, and who runs for the defibrillator.

为什么这很重要

Places with a rehearsed plan save dramatically more lives than places that simply own a defibrillator. Having the equipment is not the same as knowing what to do with it.

如何避免英年早逝

Endocannabinoid System

定义

The endocannabinoid system is a network of endogenous lipid signaling molecules and their receptors (including cannabinoid receptors CB1 and CB2) that modulates pain, mood, and energy balance throughout the nervous system. Research now indicates it plays a central role in exercise-induced hypoalgesia, with the runner's high depending on cannabinoid receptor signaling rather than opioid receptors…

为什么这很重要

It is a key reason why an athlete's natural pain-blocking ability is so powerful—and why that ability can mask cardiac warning signals during exercise.

运动如何阻断疼痛:运动员心脏的致命秘密

Endocytic and Lysosomal Transport Pathways

定义

Cellular mechanisms by which material outside the cell is engulfed in vesicles (endocytosis) and processed through lysosomes; in this context, the route by which dietary Neu5Gc enters human cells and is incorporated into cell-surface structures.

为什么这很重要

Explains how a sugar from food physically becomes part of your own tissues, which is the biological basis of the Neu5Gc concern.

Read: Q&A: Can Your Love for Red Meat Be Dangerous?

Endothelial Cells

定义

The thin layer of cells lining the inner surface of all blood vessels; they regulate vascular tone, prevent clotting, and control the passage of substances into the artery wall — and their dysfunction is an early, critical step in atherosclerosis.

为什么这很重要

The study's central mechanism hinges on microplastics injuring these cells, triggering inflammation and plaque growth.

问答:日常微塑料是否在助长心脏病?

内皮功能障碍

定义

Endothelial dysfunction is when that thin lining stops doing its job well. Vessels don't widen properly, and the barrier gets leakier.

为什么这很重要

It is one of the earliest changes in heart disease, showing up long before any plaque is visible on a scan. Smoking, high blood pressure, high blood sugar, and high particle counts all damage it.

Read: Is Olive Oil Actually Healthy?

Endothelial Function

定义

The ability of the inner lining of blood vessels to regulate vascular tone, inflammation, and clotting; healthy endothelial cells release nitric oxide to keep arteries relaxed and resistant to plaque formation.

为什么这很重要

Impaired endothelial function is an early, reversible step in atherosclerosis, making it a key target of diet and exercise interventions.

Read: The Hour That Would Not End

内皮糖萼

定义

The endothelial glycocalyx is a thin, gel-like layer of glycoproteins and proteoglycans lining the inner surface of blood vessels; it acts as a selective barrier that limits direct contact between circulating lipoproteins and the arterial wall, and is vulnerable to disruption by disturbed or high-velocity blood flow.

为什么这很重要

The article proposes that decades of intense exercise may 'shed' this protective coating at arterial bends, allowing ApoB-containing particles to enter the wall and initiate plaque.

Read: Do endurance sports help or hurt arteries?

Endothelial Nitric Oxide Synthase (eNOS)

定义

Endothelial nitric oxide synthase is the enzyme in artery-lining cells responsible for producing nitric oxide, which relaxes blood vessels and suppresses clot formation; in insulin resistance, impaired insulin-receptor signaling downregulates eNOS, reducing nitric oxide availability and promoting an adhesive, pro-inflammatory arterial surface.

为什么这很重要

Reduced eNOS activity is a key reason insulin resistance damages blood vessels beyond just altering cholesterol particles.

不要再迷信低密度脂蛋白(LDL)!关于载脂蛋白B(ApoB)、胰岛素抵抗与糖尿病的真相

Endothelial Progenitor Cells

定义

Bone-marrow-derived precursor cells that circulate in the bloodstream and home to sites of endothelial injury, where they participate in re-endothelialization and microvascular repair; their mobilization is enhanced by statins, aerobic exercise, and whole-food plant-based nutrition.

为什么这很重要

They represent one mechanism by which lifestyle and pharmacologic therapy restore the artery's inner lining, reducing future plaque vulnerability.

冠状动脉斑块消退、管腔悖论与运动员的血管重塑:整合药物与全食物植物性策略

Endothelial Vasomotor Response

定义

Endothelial vasomotor response is the capacity of the arterial inner lining to release signals—chiefly nitric oxide—that cause the vessel to relax and expand; this function is impaired in atherosclerosis and was shown in primate studies to partially recover relatively early in cholesterol-lowering treatment.

为什么这很重要

Recovery of this response is one reason risk falls before plaques visibly shrink, making it important for understanding the timeline of benefit.

Read: Can heart disease be reversed?

Endothelialization

定义

The process by which a single layer of endothelial cells grows to cover the inner surface of a stent, restoring a natural lining to the artery wall and reducing the risk of clot formation on the exposed metal.

为什么这很重要

Incomplete endothelialization is a key reason clots can form years after stent implantation, making it central to long-term stent safety.

Read: The Ins and Outs of Cardiac Stents

内皮

定义

The endothelium is the ultra-thin, slippery lining on the inside of every blood vessel. It is only one cell thick.

为什么这很重要

It is far more than a coating. It controls how much your vessels relax or tighten, keeps blood from clotting where it shouldn't, and decides what gets through into the wall. When it stops working properly, cholesterol particles slip in more easily.

治疗生物学而非管道:心脏病学激进的新方法

Energy Density

定义

The number of calories per gram (or per unit volume) of a food; high-fibre, water-rich plant foods have low energy density, meaning larger volumes can be eaten for fewer calories, promoting satiety and spontaneous calorie reduction without deliberate restriction.

为什么这很重要

The article identifies low energy density as a key mechanism by which whole-food plant-based diets facilitate weight loss and metabolic improvement.

生酮饮食 vs. 全食植物性饮食:关于运动表现、胰岛素敏感性、逆转心脏病和长寿的硬核证据是什么?

eNOS Uncoupling

定义

A dysfunctional state of endothelial nitric oxide synthase in which the enzyme produces superoxide rather than nitric oxide, amplifying oxidative stress and reducing vasodilatory capacity; it is reversed as tetrahydrobiopterin availability is restored during plaque regression.

为什么这很重要

It explains why oxidative stress directly impairs the artery's ability to relax and why restoring eNOS function is a key goal of both dietary and pharmacologic therapy.

冠状动脉斑块消退、管腔悖论与运动员的血管重塑:整合药物与全食物植物性策略

EPA (Eicosapentaenoic Acid)

定义

A long-chain omega-3 fatty acid found in marine oils that, in purified form, inhibits oxidation of ApoB-containing lipoprotein particles and exerts anti-inflammatory effects on the arterial wall; it differs structurally and biologically from DHA.

为什么这很重要

Knowing that EPA and DHA are distinct molecules with different effects explains why only certain fish-oil formulations showed cardiovascular benefit in trials.

Read: Heart Disease and Fish Oil

EPIC-Oxford

定义

A large UK-based prospective cohort that recruited a substantial proportion of vegetarians and vegans, forming part of the broader European Prospective Investigation into Cancer and Nutrition; it reported higher total stroke risk—driven by hemorrhagic stroke—among vegetarians compared with meat-eaters.

为什么这很重要

EPIC-Oxford is one of the main sources of evidence that vegetarian diets are not universally protective for all cardiovascular outcomes, particularly stroke.

素食主义真的能延年益寿吗?这是一个谎言吗?

Epicardial Coronary Arteries

定义

The epicardial coronary arteries are the large, surface-level arteries that run along the outside of the heart and serve as the main conduits supplying blood to the heart muscle; they are the vessels in which atherosclerotic plaque predominantly forms and the primary focus of coronary imaging studies.

为什么这很重要

The article discusses how these specific vessels are exposed to unique mechanical forces during exercise and where athlete-specific plaque accumulation is detected on imaging.

Read: Do endurance sports help or hurt arteries?

Epigenetic Methylation (of Cholesterol-Homeostasis Pathways)

定义

A heritable chemical modification—specifically the addition of methyl groups to DNA promoter regions—that alters gene expression without changing the DNA sequence; in fetal aortas exposed to maternal hypercholesterolemia, altered methylation of regulatory regions including those controlling SREBP2 is associated with early atherosclerotic lesion formation.

为什么这很重要

It provides a molecular mechanism explaining how a mother's cholesterol can permanently change how her child's body regulates its own cholesterol.

Read: Do Babies Need Statins?

Erectile Dysfunction (ED) as Vascular Marker

定义

In the cardiovascular context, erectile dysfunction is recognized as an early clinical manifestation of systemic endothelial and microvascular disease, because the penile arteries (1–2 mm diameter) reach a symptomatic threshold of narrowing several years before the larger coronary arteries (3–4 mm) do. Studies cite ED as an approximately 3-to-5-year warning sign preceding coronary events in men w…

为什么这很重要

Recognizing ED as a potential vascular warning rather than an isolated problem can prompt life-saving cardiovascular screening years before a heart attack.

从子宫到逆转:消除一生的动脉损伤

Ergogenic Aid

定义

Any nutritional, pharmacological, or physical intervention intended to enhance athletic performance beyond normal capacity; the term is used to evaluate whether a supplement like exogenous ketones provides a proven competitive advantage.

为什么这很重要

The term appears without definition when the article questions whether ketone drinks are 'universally proven ergogenic aids.'

生酮饮食 vs. 全食植物性饮食:关于运动表现、胰岛素敏感性、逆转心脏病和长寿的硬核证据是什么?

Ergometer

定义

An ergometer is a stationary exercise device—commonly a cycle or treadmill—used in a clinical setting to deliver a controlled, measurable workload while the patient is monitored, typically with an ECG and blood pressure readings. It is the standard platform for exercise stress testing used to provoke and detect signs of myocardial ischemia.

为什么这很重要

Knowing what an exercise stress test involves helps patients understand how ischemia is unmasked in people who show no symptoms at rest.

Read: Peter Megdal of curingheartdisease.com Interview

Ergometer Test

定义

A standardized exercise test performed on a stationary cycle ergometer (or similar device) at progressively increasing workloads to assess cardiovascular function and detect ischemia; Peter Megdal's abnormal result prompted further investigation that revealed coronary artery disease.

为什么这很重要

Knowing what triggered a diagnosis helps readers understand which tests can catch hidden heart disease.

阅读:《重新思考心脏健康:彼得·梅格达尔如何将一纸诊断转化为推动变革的使命》

红细胞增多症

定义

Erythrocytosis is an abnormal increase in the number of circulating red blood cells, raising blood viscosity (hematocrit); it is a recognized side effect of testosterone therapy because testosterone stimulates red blood cell production, and monitoring hematocrit (with a clinical threshold around 54%) is standard practice during treatment.

为什么这很重要

Thick blood can strain the cardiovascular system, so this is a key safety parameter doctors track in men on testosterone therapy.

Read: Testosterone Therapy and Your Heart: Why Your Total Score is Misleading

Esselstyn Diet (Caldwell Esselstyn)

定义

The Esselstyn program is an extremely low-fat, plant-exclusive dietary protocol developed by cardiologist Caldwell Esselstyn at the Cleveland Clinic, which eliminates all animal products and added oils and has been studied as a means of halting and reversing coronary artery disease. The article's interviewee cites Esselstyn's book as a foundational source in his personal research.

为什么这很重要

It is one of the most cited dietary interventions in discussions of heart disease reversal and is directly referenced in the article.

Read: Peter Megdal of curingheartdisease.com Interview

Essential Amino Acids (EAAs)

定义

The nine amino acids—including leucine—that the human body cannot synthesize in adequate amounts and must obtain from diet; adequate EAA availability, particularly leucine, is required to activate muscle protein synthesis, and their sufficiency becomes more critical as anabolic resistance develops with aging.

为什么这很重要

EAA content, not just total grams of protein, determines whether a meal actually triggers muscle maintenance in older adults.

Read: Stop Wasting Away as You Age…the Emerging Science of Antiaging!

雌特罗(E4)

定义

A naturally occurring estrogen produced by the fetal liver during pregnancy, now under clinical investigation as a menopausal hormone therapy candidate; it is thought to have a more selective tissue profile than conventional estrogens, potentially offering symptom relief with a refined safety profile.

为什么这很重要

As a newer treatment option, E4 represents the shift toward more targeted menopause therapies with potentially fewer systemic risks.

绝经 内分泌 心血管 风险

雌二醇撤退假说

定义

A model proposing that rapid physiological drops or swings in estradiol levels—rather than chronically low absolute levels—are the primary trigger for mood instability, irritability, and anxiety during the menopausal transition.

为什么这很重要

This helps explain why some women feel emotionally destabilized even before estrogen reaches its lowest postmenopausal levels.

绝经 内分泌 心血管 风险

雌激素

定义

Estrogen is a hormone, present at much higher levels in women before menopause, that affects blood vessels, cholesterol, and bone.

为什么这很重要

It appears to offer some protection to arteries, which is part of why women tend to develop heart disease about ten years later than men. What happens when estrogen drops at menopause, and whether replacing it helps, is more complicated than it was once made to sound.

雌激素能保护女性动脉免受斑块形成吗?

EVAPORATE Trial

定义

A clinical trial that used serial CCTA to track coronary plaque composition over time in patients receiving icosapent ethyl (a purified omega-3 fatty acid); it demonstrated that the drug produced regression of low-attenuation plaque, establishing CCTA as a tool for monitoring plaque response to therapy.

为什么这很重要

It shows that AI-assisted CT imaging can measure whether treatment is actually shrinking the most dangerous type of plaque.

一种无需手术透视心脏的新方法——预测心脏病发作的最佳途径

Evidence-Based Medicine (EBM)

定义

An approach to clinical decision-making that integrates the best available research evidence with clinical expertise and patient values, rather than relying on tradition or anecdote alone.

为什么这很重要

Knowing what 'evidence-based' means helps readers evaluate whether a health intervention has scientific support or is based on personal belief.

Read: Peter Megdal sets new World Record

依维单抗

定义

Evinacumab is an injectable antibody that blocks ANGPTL3, used for the most severe inherited cholesterol disorders.

为什么这很重要

It works even in patients whose LDL receptors barely function, because it lowers cholesterol by a route that does not depend on them. For children with the homozygous form, that distinction is life-changing.

我应该服用降胆固醇药吗?当然应该。.

Exercise Capacity

定义

Exercise capacity is a quantitative measure of the maximum physical work a person can perform, typically assessed during a graded stress test as peak workload in watts, peak oxygen consumption (VO2 max), or metabolic equivalents (METs). In the article, a decline in exercise capacity four months after stenting indicated that the procedure alone had not resolved the underlying disease.

为什么这很重要

Exercise capacity is both a practical measure of fitness and an independent predictor of cardiovascular prognosis, making changes in it clinically meaningful.

Read: Peter Megdal of curingheartdisease.com Interview

Exercise Economy

定义

The oxygen cost of producing a given power output or movement speed; trained cyclists maintain relatively stable exercise economy with age even as their absolute aerobic capacity declines, preserving efficiency.

为什么这很重要

It helps explain why older elite athletes can still perform well despite lower VO₂max—they waste less oxygen per watt of power produced.

精英老将自行车手的生理优化与寿命表现建模

Exercise Treadmill Testing

定义

A standardized clinical test in which a patient walks or runs on a treadmill at progressively increasing speeds and inclines while heart rate, blood pressure, and ECG are monitored; it can estimate cardiorespiratory fitness and detect myocardial ischemia.

为什么这很重要

The 122,000-patient landmark study the article cites used exercise treadmill testing to classify participants into fitness quartiles and link fitness to mortality.

Read: VO₂ max: the determinant of Health and Longevity?

运动诱发痛觉减退

定义

Exercise-induced hypoalgesia is the reduction in pain perception that occurs during and after intense physical activity, caused by the release of endogenous opioids and other pain-dampening chemicals; in athletes, this effect can mask cardiac ischemia by blunting the chest pain that would otherwise signal inadequate blood flow to the heart.

为什么这很重要

It helps explain why fit people can have serious heart disease without ever feeling the classic warning signs.

健美、迅捷且险些丧命:世界级自行车手如何发现隐匿性心脏病

Exertional Nausea

定义

Nausea that occurs during or immediately after vigorous exercise; although often attributed to training intensity or hydration, in the context of coronary artery disease it can be an atypical symptom of myocardial ischemia that athletes frequently dismiss as a normal training response.

为什么这很重要

The author's interval-session nausea turned out to be ischemia — highlighting how atypical symptoms in fit people can mask serious cardiac disease.

资深运动员的心脏病:我是如何逆转动脉阻塞并在65岁打破世界纪录的

Exogenous Ketones

定义

Ketone bodies—most commonly β-hydroxybutyrate—consumed directly as drinks or esters rather than produced by the body through carbohydrate restriction; they raise blood ketone levels quickly without requiring dietary change and are used both as research tools and as proposed ergogenic supplements.

为什么这很重要

Knowing the difference between diet-induced and supplement-induced ketosis helps readers critically assess performance and health claims made for ketone products.

生酮饮食 vs. 全食植物性饮食:关于运动表现、胰岛素敏感性、逆转心脏病和长寿的硬核证据是什么?

Exome Sequencing

定义

Exome sequencing is a genomic technique that reads the protein-coding portions of the genome, allowing researchers to identify rare coding variants—including loss-of-function mutations—that may have large effects on disease risk; it has been used to discover protective variants in genes such as CIDEB and ZNRF3 that would be missed by standard GWAS.

为什么这很重要

It uncovers rare but powerful genetic protections against heart disease that population-level studies overlook.

心血管保护的遗传架构

可扩展性假设

定义

The expandability hypothesis proposes that individuals differ in the maximum safe lipid-storage capacity of their subcutaneous fat; when that capacity is exceeded, excess lipids spill into ectopic sites — liver, pancreas, skeletal muscle, and heart — causing lipotoxicity and metabolic dysfunction.

为什么这很重要

It explains why two people with the same total fat mass can have very different metabolic health outcomes depending on where their bodies store the excess.

阅读:为什么腹部脂肪比你想象的更危险

外弹力膜

定义

The external elastic membrane is the boundary between an artery's muscular wall and surrounding connective tissue; in intravascular imaging, the area enclosed by the EEM is used to quantify total vessel size including both the open channel and the plaque within the wall.

为什么这很重要

Measuring to the EEM rather than just the lumen reveals how much the artery has remodeled outward to accommodate hidden plaque — information a standard angiogram cannot provide.

Read: What’s more important, diet vs drugs, or outcome vs regression?

Extra Virgin Olive Oil (EVOO)

定义

Cold-pressed olive oil that meets international standards for low acidity and sensory quality; unlike refined olive oil, it retains natural polyphenols and other minor bioactive compounds that may have antioxidant and anti-inflammatory properties.

为什么这很重要

EVOO is frequently contrasted with seed oils in cardiovascular research, and knowing what distinguishes it from ordinary olive oil helps you evaluate the evidence more accurately.

阅读:seed oils 是否健康,是真是假?

Extrahepatic Synthesis

定义

Extrahepatic synthesis refers to cholesterol production occurring outside the liver—in skeletal muscle, skin, kidney, intestine, and other tissues—which in humans accounts for roughly 90% of total daily cholesterol synthesis.

为什么这很重要

This challenges the common assumption that the liver is the body's primary cholesterol factory and clarifies why plasma cholesterol levels reflect transport, not the body's total production.

您的细胞会自行合成胆固醇——那为什么您的血液里到处都是它?

返回顶部

F

FAME 2 Trial

定义

The Fractional Flow Reserve Versus Angiography for Multivessel Evaluation 2 trial compared FFR-guided PCI against medical therapy alone in stable coronary artery disease, finding that PCI significantly reduced urgent repeat procedures but did not significantly lower mortality or spontaneous heart attack rates at up to 11 years.

为什么这很重要

It explains why stents are still widely used—they reliably relieve symptoms and prevent emergency hospital visits, even if they don't extend life.

治疗生物学而非管道:心脏病学激进的新方法

Familial Defective ApoB-100

定义

Familial defective ApoB-100 is a genetic disorder caused by a mutation in the APOB gene — most commonly the R3500Q (p.Arg3527Gln) variant — that impairs the ability of LDL particles to bind to the LDL receptor, resulting in lifelong elevation of LDL-C and increased atherogenic particle burden.

为什么这很重要

It explains why some people have high cholesterol from birth due to a single inherited variant rather than lifestyle, and why that exposure compounds into significant coronary disease over time.

基因好能战胜血脂差吗?

家族性高胆固醇血症

定义

Familial hypercholesterolemia, or FH, is an inherited condition where the liver cannot clear cholesterol from the blood properly. Levels are very high from birth.

为什么这很重要

Roughly one in 250 people has it, and most of them don't know. Because the exposure starts in childhood, heart attacks can happen in a person's thirties or forties. It is one of the strongest arguments for checking cholesterol early rather than waiting for middle age.

Read: Do Babies Need Statins?

家族性低β脂蛋白血症

定义

Familial hypobetalipoproteinemia is a genetic condition caused by mutations in the APOB gene that produce truncated, secretion-incompetent proteins, resulting in markedly reduced circulating LDL-C (20–50 mg/dL in heterozygotes, below 10 mg/dL in homozygotes). Affected individuals show substantially lower lifetime ASCVD risk, and homozygotes exhibit minimal plaque on imaging and in autopsy data, r…

为什么这很重要

It demonstrates that naturally very low LDL from birth is compatible with normal health and strongly protective against heart disease.

心脏病是一种选择吗?阻止斑块形成的‘零风险’秘诀

家族史

定义

Family history means whether your close relatives developed heart disease, and how young they were when it happened.

为什么这很重要

Early disease in a parent or sibling — before about 55 in men or 65 in women — is a meaningful warning sign. It can reflect shared genes, shared habits, or both, and it should push you toward testing sooner rather than later.

双倍剂量:你的家谱是生物危险品吗?这里有拯救生命的信息

家族史索引

定义

The Family History Index is the numerical output produced by the Inherited Hazard Coefficient formula; it summarizes the aggregate inherited cardiac signal across a person's family tree in a single score that can be used to guide screening decisions.

为什么这很重要

Understanding what the index represents helps users interpret their app result and explain it to a clinician.

Read: The Heart Health App That Finally Asks the Right Question

Farnesoid X Receptor (FXR)

定义

The farnesoid X receptor (FXR) is a nuclear bile acid receptor expressed predominantly in the liver and intestine that, among its many functions, regulates the activity of FMO3 — the hepatic enzyme responsible for converting TMA into TMAO — thereby influencing systemic TMAO levels.

为什么这很重要

FXR links bile acid signaling to TMAO metabolism, suggesting that liver health and diet composition together shape cardiovascular risk through this pathway.

牛排中的隐形毒素:肠道细菌如何引发心脏病

Fatty Acid Oxidation (FAO)

定义

A metabolic pathway in which cells break down fatty acids to generate ATP when preferred fuels like glucose are insufficient; during estrogen deficiency, the brain may shift toward FAO, which has been linked to white matter injury and increased ketone-body burden.

为什么这很重要

This alternative fuel-burning mode helps explain why prolonged menopause may affect brain structure and long-term cognitive resilience.

绝经 内分泌 心血管 风险

Fatty Streak

定义

A fatty streak is the earliest visible stage of atherosclerosis — a flat yellow smear of cholesterol-filled immune cells just under the artery lining.

为什么这很重要

They appear in childhood and are present in most teenagers. Not all become plaques, but they are where the process starts, which is why prevention is increasingly discussed as a lifelong matter.

从子宫到逆转:消除一生的动脉损伤

FELIC Study

定义

The Fate of Early Lesions in Children (FELIC) study examined aortic tissue from children aged 1 to 13 who died of non-cardiovascular causes and compared lesion sizes with those seen in fetal specimens, providing indirect evidence that some fetal fatty streaks regress after birth while also showing that children of hypercholesterolemic mothers accumulate lesions faster through childhood.

为什么这很重要

It is the key evidence that early arterial damage is not necessarily permanent—but also that maternal cholesterol during pregnancy leaves a lasting biological tendency.

先天性疾病

Fermented Dairy

定义

Dairy products such as yogurt, kefir, and aged cheese in which bacteria or molds have partially broken down lactose and proteins, altering the food's matrix and bioactive compound profile; Astrup's research cited in the article suggests saturated fat from fermented dairy does not carry the same cardiovascular risk as saturated fat from ultra-processed foods.

为什么这很重要

Distinguishing fermented from non-fermented dairy refines dietary advice beyond a simple 'avoid saturated fat' message and illustrates the food-matrix principle.

阅读:通过饮食治疗心脏病不仅是一种现代痴迷——它更是一种有数百万年进化历史支撑、并借助现代科学最先进手段的实践。

Fetal Programming

定义

The process by which the intrauterine environment—particularly maternal nutrition and metabolic state—permanently alters gene expression and metabolic set-points in the developing fetus, with lasting consequences for cardiovascular and metabolic health in later life.

为什么这很重要

It means a mother's cholesterol during pregnancy can leave a lasting biological imprint on her child's arteries before birth.

Read: Do Babies Need Statins?

FFR (Fractional Flow Reserve)

定义

FFR is a catheter-based measurement of the pressure drop across a coronary artery narrowing during maximal blood flow; a value of 0.80 or below indicates that the blockage is significantly restricting blood flow and is used to decide whether a stent is physiologically justified.

为什么这很重要

FAME 2, a key trial in this article, used FFR guidance to select patients for stenting, making it important to understand what FFR measures and why it changes stenting decisions.

治疗生物学而非管道:心脏病学激进的新方法

FGF21 (Fibroblast Growth Factor 21)

定义

FGF21 is a myokine and metabolic hormone produced by muscle (and liver) during exercise that improves insulin sensitivity and glucose uptake by enhancing insulin signaling in target tissues. The article identifies it as one of the biochemical mediators through which strength training may reduce cardiovascular risk.

为什么这很重要

Better glucose handling reduces a key driver of atherosclerosis, linking muscle biology directly to heart protection.

Read: Can pumping iron help your pumping heart?

纤维

定义

Fiber is the part of plant food your body cannot digest. It is found in beans, oats, vegetables, fruit, and whole grains.

为什么这很重要

Soluble fiber grabs onto bile in your gut and carries it out, which forces your liver to pull cholesterol from your blood to make more. That is a genuine cholesterol-lowering effect from food, not just a general healthy-eating claim.

素食主义真的能延年益寿吗?这是一个谎言吗?

Fibrinolysis

定义

The physiological process by which the body dissolves blood clots through the enzyme plasmin; Lp(a) impairs this process by competing with plasminogen for fibrin-binding sites, reducing clot clearance and increasing the risk of an occlusive cardiac event.

为什么这很重要

Understanding fibrinolysis clarifies the second major way Lp(a) raises heart attack risk, beyond its role in plaque formation.

载脂蛋白B、脂蛋白(a)与C反应蛋白在动脉粥样硬化进展中的综合动力学

Fibrinolytic Enzyme

定义

A protein that catalyzes the breakdown of fibrin, dissolving blood clots; fibrinolytic activity is distinct from plaque removal, because arterial plaque is embedded in the vessel wall rather than circulating in the bloodstream.

为什么这很重要

Knowing the difference between clot dissolution and plaque regression is essential for evaluating any 'artery-clearing' supplement claim.

纳豆激酶与心血管斑块:人体研究的真实情况

纤溶单位 (FU)

定义

The standard unit used to measure the clot-dissolving activity of nattokinase supplements; 2,000 FU per day is the dose found on most commercial bottles and is the dose tested in the NAPS trial.

为什么这很重要

Supplement labels express nattokinase potency in FU rather than milligrams, so recognizing this unit is necessary to compare products and study doses.

纳豆激酶与心血管斑块:人体研究的真实情况

Fibroatheroma

定义

A fibroatheroma is an intermediate-to-advanced atherosclerotic lesion defined by the presence of a true necrotic core beneath a fibrous cap; it represents progression beyond the fatty streak and pathologic intimal thickening stages toward the plaque architecture associated with clinical events.

为什么这很重要

Recognizing this stage in the lesion progression helps explain how decades of lipid retention and inflammation eventually create the plaques that cause heart attacks.

先天性疾病

Fibrotic Scar (Myocardial)

定义

Non-contractile fibrous tissue that replaces dead heart muscle after a myocardial infarction; because it lacks the electrical and mechanical properties of normal myocardium, it permanently impairs pumping function in the affected region.

为什么这很重要

Myocardial fibrotic scarring illustrates why even optimal secondary prevention cannot fully restore heart function after a heart attack, anchoring the article's discussion of biological inertia.

Read: Can Heart Disease Be Cured?

Fibrous Cap Thickness (FCT)

定义

Fibrous cap thickness is the measured depth of the protective fibrous layer that separates a plaque's lipid core from the flowing blood; a thin fibrous cap is a hallmark of a vulnerable plaque at high risk of rupturing and triggering a heart attack.

为什么这很重要

Cap thickness tells you not just how much plaque is present but how dangerous it is — a thin cap over a large lipid pool is the anatomy of a heart attack waiting to happen.

Read: What’s more important, diet vs drugs, or outcome vs regression?

Fick Principle

定义

The Fick principle states that maximal oxygen consumption equals cardiac output multiplied by the arteriovenous oxygen content difference; it provides the mathematical framework for separating how much of an athlete's aerobic decline is due to a weakening heart pump versus reduced oxygen extraction by the muscles.

为什么这很重要

Understanding this equation shows why both heart-pump capacity and muscle oxygen use must be maintained to preserve endurance performance with age.

体质好如何掩盖心脏病发作

Filippo Ganna (Professional Hour Record Reference)

定义

An elite professional cyclist who holds the UCI Hour Record for able-bodied men, representing the gold-standard benchmark against which amateur and para-athlete hour record performances are contextualised.

为什么这很重要

Comparing elite and masters or para performances illustrates the wide spectrum of cardiovascular and aerobic capacity in competitive cycling.

阅读:彼得·梅格达尔 2022 年一小时纪录挑战

第一对角支

定义

A side-branch artery that arises from the Left Anterior Descending (LAD) coronary artery and supplies blood to a portion of the left ventricular wall; in the Megdal study, the origin of the first diagonal branch showed the most dramatic regression—from severe stenosis (60–75%) in 2014 to a fully patent state in 2018.

为什么这很重要

This vessel is the single most striking example of reversal in the study, illustrating how complete healing of a dangerous blockage is possible.

Read: Expert Angiographic Evaluation of Coronary Artery Disease Regression: The Megdal Serial Angiogram (2014–2018)

First-Degree Relative

定义

A biological family member who shares approximately 50 percent of an individual's genetic material, specifically parents, siblings, and children; cardiac events in first-degree relatives carry substantially more inherited risk signal than events in more distant relatives.

为什么这很重要

Whether the affected family member is a parent or sibling versus a grandparent or cousin changes how strongly that history should influence your own cardiac risk assessment.

双倍剂量:你的家谱是生物危险品吗?这里有拯救生命的信息

流-介导的血管扩张反应

定义

Flow-mediated dilation is a non-invasive ultrasound measurement of how much a conduit artery — typically the brachial artery — widens in response to increased blood flow, serving as a marker of endothelial nitric oxide signaling and endothelial function.

为什么这很重要

It is one of the key measures used in vascular intervention studies to assess whether diet or drugs improve the health of the artery's inner lining.

Read: What’s more important, diet vs drugs, or outcome vs regression?

FMO3 (Flavin-Containing Monooxygenase 3)

定义

FMO3 is a liver enzyme that converts the gut-derived gas TMA into TMAO; its activity is suppressed by insulin in healthy individuals but rises substantially when hepatic insulin resistance is present. The article frames FMO3 as a metabolic hub linking gut microbiome activity, liver function, and circulating TMAO levels.

为什么这很重要

FMO3 activity explains why people with metabolic disease have higher TMAO even without eating more red meat.

红肉正在通过你的肠道杀死你吗?关于TMAO的大骗局

泡孔

定义

A foam cell is an immune cell that has eaten so much trapped cholesterol that it swells up and looks foamy under a microscope.

为什么这很重要

These cells came to help, then got stuck and died where they sat. Piles of dead foam cells form the greasy center of a plaque. They are the reason plaque is as much an immune problem as a fat problem.

Read: Which Came First – the Lipid or the Inflammation? Apolipoprotein B and the Chicken-and-Egg Problem of Atherogenesis

食物基质

定义

The food matrix refers to the physical and chemical structure of a whole food—cell walls, fiber, protein networks—that surrounds and interacts with its nutrients; fats consumed within an intact food matrix, such as whole almonds versus almond oil, are absorbed more slowly and less completely than the same fats in extracted, purified form.

为什么这很重要

It explains why eating nuts and avocados may have different metabolic effects than drizzling the equivalent amount of oil, and is central to the article's recommendation to get more fat from whole foods.

阅读:seed oils 是否健康,是真是假?

Founder Population

定义

A founder population is a group descended from a small number of common ancestors, resulting in reduced genetic diversity and an elevated frequency of certain rare variants; in cardiovascular genetics, founder populations such as specific Icelandic or Finnish cohorts have been used to discover cardioprotective variants that are too rare to detect efficiently in heterogeneous global samples.

为什么这很重要

Studying isolated communities with shared ancestry can reveal rare genetic protections against heart disease far more efficiently than studying the general population.

心血管保护的遗传架构

Founder Variant

定义

A founder variant is a gene mutation that originated in a single ancestor and has reached an unusually high frequency in a genetically isolated population — such as the APOB R3500Q variant in the Old Order Amish — making that community a natural study group for understanding the long-term effects of the mutation.

为什么这很重要

Founder populations allow scientists to study the effect of a single genetic change across many individuals who share similar lifestyles, providing clearer evidence about lifelong cholesterol exposure and heart disease.

基因好能战胜血脂差吗?

FOURIER Trial

定义

The FOURIER trial evaluated the PCSK9 inhibitor evolocumab added to statin therapy and demonstrated that aggressively lowering ApoB-containing particles reduced cardiovascular events; analysis also showed that patients who achieved very low LDL-C but retained high hs-CRP still faced elevated residual risk, supporting the dual-risk model of atherogenesis.

为什么这很重要

FOURIER showed that even ultra-low cholesterol does not fully protect you if inflammation remains high—both targets matter.

Read: Which Came First – the Lipid or the Inflammation? Apolipoprotein B and the Chicken-and-Egg Problem of Atherogenesis

傅里叶-奥勒

定义

The open-label extension of the FOURIER trial, which tracked patients treated with evolocumab for seven or more years and found sustained cognitive stability even among those maintaining LDL-C below 20 mg/dL.

为什么这很重要

Long-term extension data are critical for ruling out slow-developing harms that a shorter trial might miss.

Read: Cholesterol: How Low is Too Low?

Fractional Flow Reserve

定义

Fractional flow reserve measures the pressure drop across a narrowing to find out whether it is actually restricting blood flow.

为什么这很重要

Eyeballing an angiogram is unreliable. A lesion that looks tight may pass plenty of blood, and stenting one that does not need it provides no benefit. This test decides which narrowings are worth treating.

治疗生物学而非管道:心脏病学激进的新方法

Framingham Offspring Cohort

定义

The Framingham Offspring Cohort is the second-generation study of the Framingham Heart Study, enrolling the adult children of the original participants; it has provided longitudinal data linking decades of hyperlipidemia exposure in young adulthood to later coronary heart disease risk, independent of lipid levels at midlife.

为什么这很重要

Its multi-decade follow-up makes it one of the few datasets capable of testing whether early exposure leaves a lasting cardiovascular imprint.

载脂蛋白B:更长、更高、更糟

弗 Framingham 风险评分

定义

The Framingham Risk Score is a specific ten-year heart-attack-risk calculator built from the Framingham Heart Study's decades of data — the original tool that turned "risk factors" into a number.

为什么这很重要

It's still widely cited, but it and its successors were built on older, less diverse populations, so they consistently underestimate risk in groups they weren't trained on — including highly fit masters athletes with real plaque burden.

Read: Coronary Calcium and Athletic Risk

Frank-Starling Mechanism

定义

The Frank-Starling mechanism is the heart's intrinsic ability to increase the force of contraction when more blood fills the ventricle during diastole; master athletes exploit this by developing larger, more compliant ventricles that can pump greater stroke volumes even as maximum heart rate falls.

为什么这很重要

It explains how well-trained older athletes partially compensate for a lower maximum heart rate by squeezing more blood out with each beat.

体质好如何掩盖心脏病发作

Free Hormone Hypothesis

定义

The free hormone hypothesis is the principle that only the protein-unbound fraction of a hormone is able to cross cell membranes and exert biological effects, making the free (and loosely albumin-bound) fraction the physiologically relevant measure rather than total circulating concentration.

为什么这很重要

This concept underlies why doctors are increasingly urged to measure bioavailable rather than total testosterone.

Read: Testosterone Therapy and Your Heart: Why Your Total Score is Misleading

游离睾酮

定义

Free testosterone is the small fraction (roughly 1–4% of total) that circulates unbound to any protein and can diffuse directly across cell membranes to activate the intracellular androgen receptor.

为什么这很重要

It is the most immediately active form of testosterone and a key component of bioavailable testosterone measurement.

Read: Testosterone Therapy and Your Heart: Why Your Total Score is Misleading

FREEDOM Trial

定义

The Future Revascularization Evaluation in Patients with Diabetes Mellitus trial randomized 1,900 diabetic patients with multivessel coronary artery disease to PCI or CABG, finding that bypass surgery significantly reduced death and heart attack rates compared with stenting over up to 13 years.

为什么这很重要

It is the key evidence base for recommending bypass surgery over stenting in patients who have both diabetes and multiple blocked arteries.

治疗生物学而非管道:心脏病学激进的新方法

法国悖论

定义

The French Paradox is the observation that France had relatively low coronary heart disease mortality in the 1980s and 1990s despite high saturated fat consumption; analyses have attributed this apparent paradox to a time-lag in France's adoption of high-fat diets compared with other Western nations, systematic under-certification of CHD deaths by French physicians, and the cumulative nature of a…

为什么这很重要

The French Paradox has long been used to question the diet-heart link, so understanding why it is a statistical artifact rather than a genuine exception is important for evaluating nutrition claims.

胆固醇大谎言:揭露饮食行业的有组织否认

Friedewald Equation

定义

A widely used mathematical formula that estimates LDL cholesterol from total cholesterol, HDL cholesterol, and triglycerides rather than measuring it directly; it becomes unreliable when triglycerides are elevated or blood is drawn in a non-fasting state, which is one reason ApoB measurement is considered more accurate in certain patients.

为什么这很重要

Understanding this limitation explains why a 'normal' LDL-C result can still miss meaningful cardiovascular risk.

载脂蛋白B、脂蛋白(a)与C反应蛋白在动脉粥样硬化进展中的综合动力学

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G

G-Force (in Velodrome Turns)

定义

The effective gravitational load experienced by a rider when centripetal acceleration through a steeply banked curve adds to normal body weight; on a 40-degree banked track the combined force can approach twice the rider's resting body weight, increasing cardiovascular and musculoskeletal demand.

为什么这很重要

Elevated mechanical load during exercise directly increases cardiac workload and oxygen demand.

阅读:彼得·梅格达尔 2022 年一小时纪录挑战

Gastrointestinal Hemorrhage

定义

Gastrointestinal hemorrhage is bleeding within the digestive tract, most commonly in the stomach or upper intestine; it is the most frequent serious bleeding complication of long-term aspirin use and often tips the benefit–risk balance against aspirin in primary prevention.

为什么这很重要

It is the main measurable harm seen in large primary-prevention aspirin trials, directly competing with the cardiovascular events the drug is meant to prevent.

每日阿司匹林究竟是在夺走你的生命还是在拯救你?最新科学研究怎么说。.

GATOR2 Complex

定义

A multiprotein complex that acts as a positive regulator of mTORC1 by transmitting leucine availability signals from Sestrin2 to the Rag GTPases, which then recruit mTORC1 to the lysosomal surface for activation.

为什么这很重要

GATOR2 is part of the precise molecular machinery that translates the leucine content of a meal into a muscle-building signal, relevant to understanding why protein quality matters in aging.

Read: Stop Wasting Away as You Age…the Emerging Science of Antiaging!

Gene Dosing Effect

定义

The gene dosing effect refers to the amplified probability of carrying a pathogenic cardiac variant when both parents have experienced early cardiac events; having two affected first-degree parents roughly doubles the inherited risk signal compared with one, raising the likelihood of a causative inherited mutation substantially.

为什么这很重要

It explains why the app treats two-parent cardiac histories as categorically more alarming than single-parent histories.

Read: The Heart Health App That Finally Asks the Right Question

基因变异

定义

A gene variant is a small difference in your DNA compared with most other people.

为什么这很重要

Some variants raise cholesterol, some lower it, and some barely matter. Studying people who were born with naturally low cholesterol has been one of the most powerful ways to prove that lowering it actually prevents heart attacks.

心血管保护的遗传架构

遗传学

定义

Genetics is the study of what you inherit from your parents.

为什么这很重要

Your genes strongly influence your cholesterol, blood pressure, and how early plaque starts forming. What they do not do is seal your fate. Genes set your starting point and how fast the meter runs; what you do about it still changes the outcome.

基因好能战胜血脂差吗?

Genome-Wide Association Study (GWAS)

定义

A genome-wide association study (GWAS) scans hundreds of thousands to millions of genetic variants across the entire human genome to identify positions statistically associated with a trait or disease; in cardiovascular research, GWAS has identified common variants near genes such as HMGCR and NPC1L1 that implicate therapeutic targets even when each variant's individual effect is small.

为什么这很重要

GWAS is how researchers discovered most of the genetic links between specific proteins and heart disease risk.

心血管保护的遗传架构

Ghrelin

定义

Ghrelin is a hormone produced primarily in the stomach that stimulates appetite and promotes fat storage; sleep deprivation raises ghrelin levels while lowering leptin, creating a hormonal environment that increases caloric intake and encourages fat accumulation in visceral depots.

为什么这很重要

Understanding ghrelin's role explains the biological mechanism linking poor sleep to weight gain and belly fat.

阅读:为什么腹部脂肪比你想象的更危险

格拉戈夫效应

定义

The Glagov effect (compensatory or outward remodeling) is the tendency of an artery to expand its outer diameter as plaque accumulates within the wall, preserving the inner lumen size and blood flow until plaque burden becomes very large; this means significant atherosclerosis can be present without causing measurable narrowing on a standard angiogram.

为什么这很重要

The article uses this phenomenon to explain why trained athletes may feel perfectly well and still set personal records despite harboring substantial hidden coronary plaque.

Read: Do endurance sports help or hurt arteries?

格拉戈夫现象

定义

The Glagov phenomenon (also called compensatory or outward remodeling) is the tendency of an arterial wall to expand outward as atherosclerotic plaque accumulates, thereby preserving the inner lumen diameter until plaque burden becomes very large. Because lumen size stays normal during this compensatory phase, standard stress tests and angiograms can appear normal even in the presence of substant…

为什么这很重要

This explains how a person can feel completely well and pass a stress test while carrying significant hidden arterial disease.

从子宫到逆转:消除一生的动脉损伤

Glomerular Filtration

定义

Glomerular filtration is the process by which the kidney's glomeruli — tiny capillary networks — filter waste products and small molecules, including TMAO, from the bloodstream into the urine; adequate glomerular filtration clears fish-derived TMAO within roughly 24 hours, whereas chronic kidney disease reduces this clearance and allows TMAO to accumulate.

为什么这很重要

This explains why people with kidney disease are especially vulnerable to TMAO-related cardiovascular and renal harm.

牛排中的隐形毒素:肠道细菌如何引发心脏病

GLP-1 Receptor Agonist

定义

GLP-1 receptor agonists are injectable medicines — semaglutide and tirzepatide are the best known — that copy a gut hormone controlling appetite and blood sugar.

为什么这很重要

They cause substantial weight loss, but the interesting finding is that they reduce heart attacks and strokes faster than the weight comes off. That suggests they are doing something to blood vessels directly, not just shrinking waistlines.

Read: Ozempic and Mounjaro: Saving Your Heart BEFORE the Scale Moves

Glucocorticoid Receptor Resistance

定义

Glucocorticoid receptor resistance is a state in which cells become less responsive to cortisol's signalling, so the body's ability to regulate inflammation and other stress responses is impaired even when cortisol levels appear normal. The article lists it as one of the HPA dysregulation patterns associated with adverse cardiovascular phenotypes.

为什么这很重要

It explains why measuring cortisol in the blood can miss important stress-related biology — the problem may be in how cells respond, not just how much hormone is circulating.

Read: Does stress kill you and does meditation save you?

Glycan

定义

A carbohydrate chain or sugar molecule attached to proteins or lipids on cell surfaces; Neu5Gc is incorporated into human cell-surface glycans after red meat consumption, where it is recognized by the immune system as foreign.

为什么这很重要

Glycans are the structural context in which Neu5Gc is displayed on cells, making this term essential to understanding how the immune reaction is triggered.

Read: Q&A: Can Your Love for Red Meat Be Dangerous?

Glycemic Load

定义

A measure that combines both the quality and quantity of carbohydrate in a meal by multiplying the glycemic index of a food by the amount of carbohydrate it contains; carbohydrate restriction lowers glycemic load and can reduce post-meal blood glucose spikes.

为什么这很重要

The article cites reduced glycemic load as one mechanism by which low-carb diets improve short-term glucose control in type 2 diabetes.

生酮饮食 vs. 全食植物性饮食:关于运动表现、胰岛素敏感性、逆转心脏病和长寿的硬核证据是什么?

Glycoconjugates

定义

Glycoconjugates are molecules—typically proteins (glycoproteins) or lipids (glycolipids)—to which sugar chains are covalently attached; sialic acids, including Neu5Gc from dietary red meat, are added to glycoconjugates in the Golgi apparatus and then displayed on cell surfaces.

为什么这很重要

The incorporation of foreign Neu5Gc into human glycoconjugates is the key step that transforms a dietary sugar into a target for immune attack on artery walls.

你的免疫系统在与你的牛排开战吗?

Glycosaminoglycan

定义

Glycosaminoglycans are long, negatively charged sugar chains that are major components of the arterial extracellular matrix and plaque connective tissue; in cynomolgus macaque plaques they are prominent structural constituents that persist after regression of the lipid-rich components.

为什么这很重要

They are part of the fibrous scaffold that remains after treatment, explaining why plaques become denser and more stable rather than disappearing entirely.

Read: Can heart disease be reversed?

Glymphatic System

定义

The glymphatic system is a perivascular waste-clearance network in the brain that uses cerebrospinal fluid flowing along blood vessel walls to flush out metabolic byproducts, including amyloid-beta and tau, primarily during sleep.

为什么这很重要

Arterial stiffness disrupts the pulse-driven flow that powers this system, offering a direct mechanism by which vascular disease could cause amyloid buildup in the brain.

阿尔茨海默病其实始于你的动脉吗?

年级

定义

GRADE (Grading of Recommendations, Assessment, Development and Evaluations) is a widely used framework for rating the certainty of evidence behind a clinical finding, classifying it as high, moderate, low, or very low based on factors such as study design, risk of bias, consistency, directness, and precision of results.

为什么这很重要

Knowing how GRADE works helps readers understand why two studies showing the 'same' result can still carry very different levels of confidence.

Read: What is the difference between Mediterranean and whole-food plant-based diets for heart disease?

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H

风险比

定义

A hazard ratio compares how quickly events happen in two groups. A ratio of 0.75 means events occurred at three-quarters the rate in the treated group.

为什么这很重要

It is a relative measure, so it says nothing about how common the event was to begin with. A hazard ratio of 0.5 sounds dramatic whether the risk fell from 40 percent to 20 or from 0.4 percent to 0.2.

载脂蛋白B:更长、更高、更糟

hCG (Human Chorionic Gonadotropin)

定义

Human chorionic gonadotropin is a hormone that mimics luteinizing hormone (LH), stimulating testicular Leydig cells to produce testosterone; in men on testosterone replacement therapy it is used to preserve intratesticular testosterone production and maintain spermatogenesis, which exogenous testosterone alone suppresses.

为什么这很重要

Men concerned about fertility or testicular atrophy during testosterone therapy need to understand the role hCG plays.

Read: Testosterone Therapy and Your Heart: Why Your Total Score is Misleading

高密度脂蛋白

定义

HDL, or high-density lipoprotein, is the particle often called "good cholesterol." It picks up cholesterol from tissues and carries it back to the liver.

为什么这很重要

The nickname has aged badly. People with naturally high HDL are healthier, but drugs that raise HDL have repeatedly failed to prevent heart attacks. High HDL seems to be a sign of good health rather than a cause of it.

胆固醇:它有什么用?

HDL Cholesterol Efflux Capacity (CEC)

定义

A functional measure of HDL's ability to accept cholesterol from cholesterol-laden macrophages in arterial walls and transport it to the liver for removal; emerging evidence suggests CEC predicts cardiovascular risk more accurately than the simple blood concentration of HDL cholesterol.

为什么这很重要

A high HDL number on a standard test does not guarantee protection — what the HDL actually does matters more.

接受过治疗的心房颤动大师级运动员(50岁以上)的心血管风险管理与训练调整:专家报告

健康寿命

定义

Healthspan is the portion of a person's life spent in good health, free from serious disease, disability, or significant functional decline, as distinguished from total lifespan, which counts all years alive regardless of health status.

为什么这很重要

Focusing on healthspan rather than lifespan alone shifts the goal from simply living longer to living better for longer.

现代医学能拯救一个久坐不动的人吗?持续40年的三胞胎实验

Healthy Aging (Epidemiological Definition)

定义

A composite research endpoint used in long-term cohort studies—such as the Nurses' Health Study—defined as surviving to older age free from major chronic diseases (including cardiovascular disease), significant cognitive decline, and functional impairment; the 2024 Nurses' Health Study analysis found higher midlife plant-protein intake to be a significant predictor of this outcome.

为什么这很重要

Using 'healthy aging' as an endpoint captures cardiovascular benefit more completely than disease incidence alone, making it a stronger measure of dietary impact.

阅读:通过饮食治疗心脏病不仅是一种现代痴迷——它更是一种有数百万年进化历史支撑、并借助现代科学最先进手段的实践。

Heart Age Gap

定义

The difference between a person's biological heart age—estimated from electrocardiographic, vascular, or risk-factor models—and their chronological age; a positive gap indicates that the heart is functionally older than the calendar age and predicts higher cardiovascular risk and worse survival.

为什么这很重要

Seeing a concrete gap in 'years' is shown to motivate behavior change more effectively than abstract risk percentages.

你的心脏比你更老吗?逆转心血管年龄的科学

心脏病发作

定义

A heart attack happens when blood flow to part of the heart muscle is cut off and that muscle starts to die.

为什么这很重要

The usual trigger is not a slow closing of the artery. It is a plaque cracking open, with a clot forming on top in minutes. That is why heart attacks so often strike people who felt fine the day before, and why plaques too small to cause symptoms can still kill.

治疗生物学而非管道:心脏病学激进的新方法

Heart Disease Survivor

定义

A person who has been diagnosed with significant cardiac disease—such as severe atherosclerotic heart disease—and has not died from it, often implying they have managed or reversed their condition through medical treatment, lifestyle change, or both.

为什么这很重要

Understanding this term helps readers recognize that cardiac diagnoses are not always fatal or permanently disabling, and that meaningful recovery is possible.

Read: Peter Megdal sets new World Record

心力衰竭

定义

Heart failure means the heart cannot pump well enough to meet the body's needs. The name is misleading — it does not mean the heart has stopped.

为什么这很重要

It causes breathlessness, swollen legs, and fatigue. Common causes include past heart attacks, long-standing high blood pressure, and valve problems.

心率

定义

Heart rate is how many times your heart beats per minute.

为什么这很重要

A lower resting rate usually reflects better fitness — trained endurance athletes often sit in the 40s. On its own, though, resting heart rate says very little about whether you have plaque.

Heart Rate Variability

定义

Heart rate variability (HRV) is the natural beat-to-beat variation in the time between heartbeats, and is used as a non-invasive measure of autonomic nervous system balance — higher variability generally reflecting greater parasympathetic (rest-and-digest) activity. It is listed in the article as one of the outcomes measured in meditation trials.

为什么这很重要

HRV is frequently cited as a marker of stress resilience and cardiovascular health, so knowing what it actually measures helps you evaluate wearable-device claims.

Read: Does stress kill you and does meditation save you?

Heat Tolerance (Thermoregulatory Acclimatization)

定义

The physiological adaptation to exercising in warm environments, including increased plasma volume, earlier onset of sweating, and reduced cardiovascular strain at a given temperature; athletes who train in cool climates lack this adaptation and experience greater heart-rate elevation and performance decline when competing in heat.

为什么这很重要

Poor heat tolerance raises cardiovascular stress during exertion, which is a meaningful risk factor for older athletes and heart patients exercising in warm conditions.

Peter Megdal 于 2021 年 10 月 14 日创造了全国小时计时赛纪录

海因茨·尼克斯多夫回顾性研究

定义

The Heinz Nixdorf Recall Study is a German population-based cohort study; a sub-analysis of 108 male marathon runners aged 50 and older found they had coronary artery calcium scores higher than risk-factor-matched controls despite lower Framingham Risk Scores, and that all coronary events during follow-up occurred exclusively in runners with CAC scores of 100 or above.

为什么这很重要

It was one of the first studies to formally show that standard risk calculators underestimate true plaque burden in highly trained athletes.

巅峰体能与隐形钙化:运动员的斑块积聚悖论

Hematocrit

定义

Hematocrit is the percentage of total blood volume occupied by red blood cells; in the context of testosterone therapy, a hematocrit exceeding approximately 54% signals erythrocytosis and may prompt dose adjustment.

为什么这很重要

It is the routine lab value used to detect the most common safety concern of testosterone replacement.

Read: Testosterone Therapy and Your Heart: Why Your Total Score is Misleading

血红素铁

定义

The form of iron bound to hemoglobin and myoglobin in animal tissue, absorbed more efficiently than plant-derived non-heme iron; cited as one of the potentially harmful components of red meat contributing to cardiovascular and cancer risk.

为什么这很重要

It is one of several mechanisms beyond Neu5Gc by which red meat may raise disease risk, illustrating why the picture is complex.

Read: Q&A: Can Your Love for Red Meat Be Dangerous?

Hemodynamically Significant Stenosis

定义

A degree of coronary artery narrowing sufficient to reduce blood flow and cause downstream ischemia during stress, conventionally defined as 70% or greater luminal diameter reduction; below this threshold, standard stress tests typically read as normal even if dangerous soft plaque is present.

为什么这很重要

The article's central argument hinges on the fact that most heart attacks originate from lesions that never reach this threshold.

Read: The Future of Heart Disease Management

出血性卒中

定义

A hemorrhagic stroke is a type of stroke caused by bleeding into or around the brain rather than by a blocked artery; because aspirin impairs clotting, it raises the risk of this complication, which is a key reason its use in low-risk individuals is now discouraged.

为什么这很重要

This is one of the most serious harms aspirin can cause in healthy people, making it critical to weigh against its potential heart-protection benefits.

每日阿司匹林究竟是在夺走你的生命还是在拯救你?最新科学研究怎么说。.

Heparan Sulfate

定义

Heparan sulfate is a negatively charged glycosaminoglycan, similar to chondroitin sulfate, found on proteoglycans in the arterial extracellular matrix; alongside chondroitin sulfate, it participates in the electrostatic binding of ApoB-100–containing lipoproteins that initiates plaque formation.

为什么这很重要

Understanding both types of arterial 'glue' clarifies why reducing circulating ApoB particles is the most direct way to prevent plaques from starting.

年轻时(20多岁和30多岁)胆固醇高,即使日后降下来了,以后也会引发心脏病发作吗?

Hepatic Beta-Oxidation

定义

The metabolic process in liver cells by which fatty acids are broken down within mitochondria to generate acetyl-CoA and energy; shorter-chain fatty acids such as C8:0 and C10:0 enter this pathway more readily than longer-chain saturated fats, which is the biochemical basis for the thermogenic effects ascribed to true MCT oils.

为什么这很重要

It explains why purified MCT oils and coconut oil behave differently in the body despite both being labeled 'MCT sources.'

椰子油作为健康食品的神话:行业如何左右你的饮食!

Hepatic First-Pass Metabolism

定义

Hepatic first-pass metabolism is the process by which an orally swallowed drug is absorbed from the gut and passed directly to the liver before reaching the rest of the body, where the liver chemically alters it; for oral estrogen, this triggers the liver to produce extra clotting factors, raising the risk of blood clots.

为什么这很重要

It is the key reason transdermal patches carry a lower clot risk than estrogen pills — the patch bypasses the liver entirely.

Read: Does The New Estrogen Patch Prevent Heart Disease? The Complex Truth Explained

Hepatic Glycogen

定义

Hepatic glycogen is the storage form of glucose held in liver cells; when depleted—as occurs during carbohydrate restriction—the liver shifts toward increased production and secretion of VLDL particles to export fat as fuel, which the Lipid Energy Model argues explains the rise in LDL-C on ketogenic diets.

为什么这很重要

It is the metabolic trigger at the center of the Lean Mass Hyper-Responder explanation for high LDL on low-carb diets.

Read: The Big Cholesterol Lie, Part 2

Hepatic Lipase

定义

Hepatic lipase is a liver-produced enzyme that hydrolyses triglyceride-enriched LDL particles in the circulation, converting them into smaller, denser LDL; its activity is upregulated in insulin-resistant states, accelerating the production of small dense LDL and the discordance between LDL-C and ApoB.

为什么这很重要

Understanding hepatic lipase explains the metabolic pathway through which diabetes and obesity drive a more dangerous LDL particle profile.

为什么你‘正常’的胆固醇其实是一个警告信号

Heterozygous Familial Hypercholesterolemia (HeFH)

定义

Heterozygous familial hypercholesterolemia is the more common inherited form of severely elevated LDL cholesterol, affecting roughly 1 in 311 people, in which one copy of the LDL receptor gene is defective; without treatment it carries an approximately 13-fold increased risk of coronary heart disease and causes heart attacks in about 50% of affected men by age 50.

为什么这很重要

HeFH serves as a benchmark for understanding how decades of high LDL exposure translates into cardiovascular risk—and how the index patient's shorter exposure compares.

Read: Does metabolic health protect you from high cholesterol?

高强度间歇训练(HIIT)

定义

High-intensity interval training is a structured exercise method that alternates short bouts of near-maximal effort (typically 85–95% of peak heart rate) with periods of active recovery or rest. In the cardiovascular context, HIIT protocols have been studied as a non-pharmacological intervention to reduce plaque burden and improve heart function.

为什么这很重要

HIIT is the specific exercise format shown in the CENIT trial to rival medication in reducing coronary plaque.

Read: Exercise Doesn’t Erase Arterial Plaque – It Turns It to Stone!

High-Intensity Statin

定义

A high-intensity statin is a dose expected to cut LDL by 50 percent or more — in practice, higher doses of atorvastatin or rosuvastatin.

为什么这很重要

Guidelines call for this level after a heart attack or in very high-risk patients, rather than starting low and slowly working up. The size of the reduction is what drives the benefit.

健美、迅捷且险些丧命:世界级自行车手如何发现隐匿性心脏病

High-Oleic Oils

定义

High-oleic oils are cultivar-bred versions of conventional seed oils—such as high-oleic sunflower or safflower—in which oleic acid (a monounsaturated fat) replaces most of the linoleic acid, making them considerably more resistant to oxidation and heat degradation than their standard counterparts.

为什么这很重要

They offer a practical middle ground between conventional seed oils and olive oil for cooking at higher temperatures.

阅读:seed oils 是否健康,是真是假?

High-Risk Plaque Morphology

定义

High-risk plaque morphology describes specific structural features visible on CCTA — including a large low-attenuation necrotic core, a thin or disrupted fibrous cap, positive remodeling, and spotty calcification — that identify plaques most likely to rupture and cause an acute myocardial infarction.

为什么这很重要

It is why a CCTA provides more clinically useful information than simply knowing whether an artery is narrowed.

医生没有为你开具的心脏检查

高敏C反应蛋白

定义

A blood test that detects low-grade systemic inflammation (typically 0.5–10 mg/L) by measuring CRP with greater precision than standard assays; levels above 3.0 mg/L indicate high cardiovascular risk, and a 30-year study of nearly 28,000 women found it predicted heart events more strongly than LDL cholesterol.

为什么这很重要

It reveals whether silent inflammation is actively destabilizing plaques, a risk that a standard cholesterol panel cannot show.

炎症、脂蛋白与以低密度脂蛋白(LDL)为中心的时代的终结

High-Sensitivity Troponin (hs-Tn)

定义

High-sensitivity troponin is an ultra-sensitive blood test that detects tiny amounts of troponin — a protein released when heart muscle cells are damaged — enabling identification of subtle, subclinical myocardial injury well below the threshold detectable by older assays.

为什么这很重要

It can reveal that the heart is already being quietly harmed even in people with no chest pain or other symptoms.

医生没有为你开具的心脏检查

Histologic Plaque Regression

定义

Reduction in arterial lipid content and inflammatory cell infiltration confirmed by direct microscopic examination of tissue, as demonstrated in non-human primate experiments where switching from a high-cholesterol to a low-fat diet caused measurable depletion of arterial lipid stores.

为什么这很重要

Histologic evidence from animal models provides the biological proof that diet alone can physically reverse the cellular makeup of a plaque.

Read: Reversal of Coronary Atherosclerosis: Mechanistic Insights from Human and Primate Studies

HMG-CoA Reductase

定义

HMG-CoA reductase is the rate-limiting enzyme in the liver's cholesterol biosynthetic (mevalonate) pathway; statins work by competitively blocking it, reducing the liver's own cholesterol production and prompting it to pull more LDL out of the bloodstream.

为什么这很重要

Understanding what statins actually block explains both how they lower LDL and why their side effects are tied to this specific biochemical pathway.

我应该服用降胆固醇药吗?当然应该。.

HMGCR

定义

HMGCR is the gene for HMG-CoA reductase, the enzyme that performs the rate-limiting step in making cholesterol. It is the exact target of every statin.

为什么这很重要

People born with a naturally less active version have lower cholesterol and fewer heart attacks — essentially a lifelong, low-dose statin from birth. That genetic evidence is why statins are trusted as causal, not just correlated.

我应该服用降胆固醇药吗?当然应该。.

HMGCR Locus

定义

The gene encoding HMG-CoA reductase, the rate-limiting enzyme in cholesterol synthesis and the target of statin drugs; genetic variants at this locus that lower LDL-C have been used in Mendelian randomization studies alongside PCSK9 variants to assess Alzheimer's disease risk, with neutral findings.

为什么这很重要

Including HMGCR alongside PCSK9 in genetic analyses helps distinguish whether any brain risk is specific to the PCSK9 pathway or a general consequence of lower LDL.

Read: Cholesterol: How Low is Too Low?

HNF-4α (Hepatocyte Nuclear Factor 4-Alpha)

定义

HNF-4α is a liver transcription factor that drives hepatic SHBG gene expression; it is suppressed by hyperinsulinemia and fructose-driven lipogenesis, which is why high sugar intake and insulin resistance lower SHBG, and stimulated by thyroid hormones, which is why hyperthyroidism raises SHBG.

为什么这很重要

Understanding HNF-4α links diet and metabolic health directly to how much testosterone your body can actually use.

Read: Testosterone Therapy and Your Heart: Why Your Total Score is Misleading

Holding Device (Track Start Gate)

定义

A fixed mechanical apparatus at the start line of a velodrome time trial that grips the bicycle and holds it stationary until the official countdown reaches zero, allowing the rider to clip in and apply force before release.

为什么这很重要

Relevant context for understanding the explosive cardiovascular demand at the very start of a maximal aerobic effort.

阅读:彼得·梅格达尔 2022 年一小时纪录挑战

假日心脏综合征

定义

The phenomenon in which binge alcohol consumption triggers acute atrial fibrillation or other arrhythmias, classically observed after holiday celebrations; it demonstrates that even isolated episodes of heavy drinking can destabilize the heart's electrical system without requiring underlying structural disease.

为什么这很重要

It shows that you do not need to be a chronic drinker for alcohol to cause a dangerous irregular heartbeat.

半满的玻璃杯:为什么科学正向“有益心脏健康”的饮酒习惯挥手告别

稳态模型评估胰岛素抵抗指数

定义

HOMA-IR (Homeostatic Model Assessment of Insulin Resistance) is a calculated index derived from fasting blood glucose and fasting insulin levels used to estimate a person's degree of insulin resistance; lower values indicate better insulin sensitivity.

为什么这很重要

It provides a simple way to track metabolic health beyond standard glucose or A1c tests.

现代医学能拯救一个久坐不动的人吗?持续40年的三胞胎实验

同型半胱氨酸

定义

A sulfur-containing amino acid whose blood levels rise when vitamin B12 or folate is deficient; elevated homocysteine is associated with increased vascular risk, including stroke, through effects on endothelial function and vascular integrity.

为什么这很重要

The article identifies B12-driven elevated homocysteine as a plausible mechanism linking vegetarian diets to higher hemorrhagic stroke risk in some populations.

素食主义真的能延年益寿吗?这是一个谎言吗?

Homocystinuria

定义

A rare inherited metabolic disorder, most commonly caused by deficiency of the enzyme cystathionine β-synthase (CBS), in which homocysteine accumulates to severe levels (above 100 µmol/L); untreated, it causes premature and severe vascular disease and thromboembolism often before age 30.

为什么这很重要

It is the only condition where homocysteine is established as a direct cause of arterial damage, which is why distinguishing it from mild elevation matters so much.

补充L-甲基叶 folate + 活性B族维生素降低同型半胱氨酸能否帮助预防动脉粥样硬化并减少斑块?

纯合子型家族性高胆固醇血症

定义

Homozygous familial hypercholesterolemia, or HoFH, is the rare and severe form of inherited high cholesterol, where a child inherits the faulty gene from both parents instead of one.

为什么这很重要

Cholesterol levels can be four to eight times normal from birth. Without aggressive treatment, these children can develop the arteries of a 60-year-old before they finish school. It is the most extreme demonstration of what lifelong cholesterol exposure does.

Read: Children With 60-Year-Old Arteries: The Extreme Reality of HoFH

HOPE-2 Trial

定义

A randomized controlled trial of 5,522 people with established vascular disease or diabetes that tested daily supplementation with folic acid, B-6, and B-12 for approximately five years; homocysteine fell as expected but the primary composite cardiovascular endpoint did not improve.

为什么这很重要

One of the largest and most influential trials confirming that lowering homocysteine with B vitamins does not reduce heart attack risk.

补充L-甲基叶 folate + 活性B族维生素降低同型半胱氨酸能否帮助预防动脉粥样硬化并减少斑块?

Hormone Replacement Therapy

定义

Hormone replacement therapy, or HRT, gives estrogen — sometimes with progesterone — to women whose levels dropped at menopause.

为什么这很重要

The story here has swung wildly. Early studies suggested it protected the heart, a large trial then suggested harm, and closer analysis showed that timing and delivery method matter enormously. Starting near menopause with a patch looks very different from starting fifteen years later with a pill.

Read: Does The New Estrogen Patch Prevent Heart Disease? The Complex Truth Explained

Hormone-Sensitive Lipase (HSL)

定义

Hormone-sensitive lipase is an enzyme in fat cells that breaks down stored triglycerides into free fatty acids; insulin normally suppresses it after a meal, but in insulin resistance this suppression fails, causing a continuous release of fatty acids into circulation.

为什么这很重要

Understanding HSL explains the biochemical link between insulin resistance and the liver's overproduction of dangerous lipoprotein particles.

不要再迷信低密度脂蛋白(LDL)!关于载脂蛋白B(ApoB)、胰岛素抵抗与糖尿病的真相

Horus Study

定义

The Horus study used CT imaging to assess 137 mummies from four ancient populations spanning more than 4,000 years, finding probable or definite atherosclerosis in 34 percent, demonstrating that arterial disease predates modern industrialized diet and lifestyle.

为什么这很重要

It complicates the narrative that atherosclerosis is purely a modern disease while still leaving open the question of what environmental factors accelerate it.

先天性疾病

亨氏单位(HU)

定义

A standardized scale of radiodensity used in CT imaging, where water is defined as 0 HU and denser materials register higher values; in CAC scoring, a threshold of ≥130 HU is used to identify calcified coronary plaque when applying the Agatston method.

为什么这很重要

Understanding this unit explains why a CAC scan can detect calcified plaque but misses softer, less dense deposits.

零的力量:没有钙 – 没有风险?

小时纪录

定义

A competitive cycling discipline in which an athlete attempts to cover the greatest possible distance in exactly one hour on a velodrome track; it is governed by the UCI and is widely regarded as one of the most physically demanding feats in endurance sport.

为什么这很重要

Context for understanding the elite athletic background Peter Megdal brought to his cardiac rehabilitation and research.

阅读:《重新思考心脏健康:彼得·梅格达尔如何将一纸诊断转化为推动变革的使命》

HPA Axis (Hypothalamic-Pituitary-Adrenal Axis)

定义

The HPA axis is the hormonal cascade — running from the brain's hypothalamus to the pituitary gland to the adrenal glands — that governs the body's cortisol stress response. The article argues that dysregulation of this axis (flattened daily rhythms, altered reactivity) is a more accurate model of stress-related cardiovascular risk than simply having persistently high cortisol.

为什么这很重要

Most stress-and-heart coverage focuses on cortisol levels alone; knowing the whole axis is involved explains why simple cortisol tests are not useful for assessing heart risk.

Read: Does stress kill you and does meditation save you?

HPS2-THRIVE Trial

定义

A large randomized trial testing whether adding extended-release niacin plus laropiprant to background statin therapy reduced major vascular events in high-risk patients; it found no meaningful cardiovascular benefit and identified increased rates of serious adverse events, effectively ending niacin as a mainstream cardiovascular therapy.

为什么这很重要

This trial is a key reason cardiologists stopped trying to raise HDL and refocused entirely on lowering ApoB.

Read: The Cholesterol Breakthrough: From Daily Pills to Twice-a-Year Shots

hs-CRP (High-Sensitivity C-Reactive Protein)

定义

High-sensitivity C-reactive protein is an ultra-sensitive blood assay for C-reactive protein, a marker produced by the liver in response to systemic inflammation. In cardiovascular medicine, elevated hs-CRP independently predicts ASCVD events and is used to gauge whether ongoing arterial inflammation is amplifying the risk posed by lipid burden.

为什么这很重要

Measuring the inflammatory 'fire' alongside cholesterol gives a more complete picture of plaque instability and helps guide decisions about additional preventive treatment.

从子宫到逆转:消除一生的动脉损伤

hsCRP (High-Sensitivity C-Reactive Protein)

定义

hsCRP is a blood marker of systemic inflammation measured with a highly sensitive assay; it independently predicts cardiovascular events and rises with conditions such as obesity, insulin resistance, and kidney disease. The article notes that TMAO correlates with hsCRP, making inflammation another potential confounder in studies associating high TMAO with heart disease.

为什么这很重要

Separating TMAO's signal from that of inflammation is critical to understanding whether the molecule itself—or the inflamed state it accompanies—drives risk.

红肉正在通过你的肠道杀死你吗?关于TMAO的大骗局

Hunter-Gatherer Societies

定义

Pre-agricultural human communities that obtain food by hunting animals, fishing, and gathering wild plants rather than farming; ethnographic data from 229 such societies shows a median of roughly 55–65% of calories from animal foods, a figure Cordain uses to define a plausible ancestral protein target.

为什么这很重要

Ancestral diet patterns are the empirical foundation of the Paleo dietary framework.

Read: The Protein Debate

Hyper-Absorber

定义

A hyper-absorber is an individual whose intestines take up an unusually high fraction of luminal cholesterol—from both diet and recycled bile—via NPC1L1-mediated transport. These individuals respond better to ezetimibe, which blocks intestinal NPC1L1, than to statin therapy alone.

为什么这很重要

If you are a hyper-absorber, targeting the gut rather than the liver's synthesis machinery is the more efficient way to lower LDL.

百万美元分子:为什么你的身体为胆固醇付出巨资

Hyper-Synthesizer

定义

A hyper-synthesizer is an individual whose liver and peripheral tissues endogenously produce unusually large amounts of cholesterol, often independent of dietary intake. These individuals tend to respond well to statins, which block HMG-CoA reductase, but less well to dietary cholesterol restriction.

为什么这很重要

Knowing you are a hyper-synthesizer explains why cutting eggs from your diet barely moves your LDL and why your doctor may prioritise a statin instead.

百万美元分子:为什么你的身体为胆固醇付出巨资

Hyperaminoacidemia

定义

Hyperaminoacidemia is the transient rise in blood amino acid concentrations that follows a protein-containing meal; it is the primary nutritional signal that stimulates mTORC1 and muscle protein synthesis. In older adults, a blunted anabolic response to hyperaminoacidemia is a defining feature of anabolic resistance.

为什么这很重要

It is the physiological trigger that protein meals are designed to produce, and understanding it clarifies why meal size and leucine content matter.

是什么在65岁前夺走你的生命,却可能在65岁后拯救你——蛋白质的悖论

Hypercholesterolemia

定义

Hypercholesterolemia is an abnormally elevated level of cholesterol-carrying particles in the blood, typically caused in primate experiments by feeding a diet high in dietary cholesterol and saturated fat, and associated with accelerated plaque formation in artery walls.

为什么这很重要

The entire mechanism of plaque reversal in this article turns on lowering hypercholesterolemia, so the term is central to understanding the research.

Read: Can heart disease be reversed?

高血糖

定义

Abnormally elevated blood glucose concentration; included as one of the modifiable risk factors in the PDAY scoring system because it accelerates arterial lesion progression in adolescents and young adults.

为什么这很重要

Knowing that high blood sugar contributes to artery damage even in teenagers reinforces why metabolic health matters from an early age.

Read: Do Babies Need Statins?

Hyperhomocysteinemia

定义

An elevated level of homocysteine in the blood, classified as mild (15–30 µmol/L), moderate (30–100 µmol/L), or severe (above 100 µmol/L); the causal relationship to cardiovascular disease is well established only at severe concentrations.

为什么这很重要

Knowing the severity classification tells you whether a high reading on your blood test is in the range where treatment has actually been shown to matter.

补充L-甲基叶 folate + 活性B族维生素降低同型半胱氨酸能否帮助预防动脉粥样硬化并减少斑块?

Hypertrophic Cardiomyopathy

定义

Hypertrophic cardiomyopathy is an inherited condition in which the heart muscle grows abnormally thick.

为什么这很重要

It is a leading cause of sudden cardiac death in young athletes. The difficulty is that a trained heart is also thicker than average, so telling healthy adaptation from disease takes careful specialist assessment.

如何避免英年早逝

高尿酸血症

定义

An elevated level of uric acid in the blood, which can precipitate gout and kidney stones; it was identified as a notable adverse effect of bempedoic acid in the CLEAR Outcomes trial, distinguishing its safety profile from that of statins.

为什么这很重要

Knowing about hyperuricemia helps patients and clinicians weigh bempedoic acid's muscle-friendly advantages against its specific metabolic side effect.

Read: The Cholesterol Breakthrough: From Daily Pills to Twice-a-Year Shots

返回顶部

I

ICONIC Trial

定义

A coronary CT angiography study that quantified specific plaque components in symptomatic patients with a CAC score of zero who subsequently developed acute coronary syndrome, revealing substantially greater fibrous, fibrofatty, and necrotic-core plaque volumes compared with matched controls who did not develop events.

为什么这很重要

ICONIC provides the most granular evidence that dangerous vulnerable plaque can exist even when no calcium is detectable.

零的力量:没有钙 – 没有风险?

Icosapent Ethyl

定义

Icosapent ethyl is a purified, high-dose form of the omega-3 fat EPA, sold as Vascepa.

为什么这很重要

Unlike ordinary fish oil it reduced events in a major trial. The result is debated, because the placebo used may itself have been harmful, and other purified omega-3 trials have been negative.

Read: Heart Disease and Fish Oil

Idiopathic Left Ventricular Hypertrophy

定义

Idiopathic left ventricular hypertrophy is thickening of the heart's main pumping chamber wall that exceeds normal limits but for which no genetic variant, structural diagnosis, or external cause can be identified; it accounted for approximately 17% of adjudicated SCD cases in the NCAA dataset and sits at the boundary between athlete's heart and overt cardiomyopathy.

为什么这很重要

It represents the difficult diagnostic grey zone where distinguishing normal athletic adaptation from silent disease is hardest and the stakes are highest.

如何避免英年早逝

IDL

定义

IDL, or intermediate-density lipoprotein, is a particle that forms partway through the process of a big triglyceride-carrying particle shrinking down into an LDL particle.

为什么这很重要

It carries ApoB, so it can lodge in artery walls just like LDL can. A standard cholesterol panel does not list it separately, which is one more reason the standard panel undercounts your real risk.

为什么载脂蛋白B(ApoB)很重要?

iFR (Instantaneous Wave-Free Ratio)

定义

Instantaneous wave-free ratio is an invasive catheter-based index that measures the pressure drop across a coronary stenosis during a specific resting phase of the cardiac cycle, providing a wire-based assessment of whether a blockage is hemodynamically significant without the need for pharmacological stress. Like FFR, it guides decisions about whether a stenosis warrants intervention.

为什么这很重要

In athletes where non-invasive tests may be equivocal, iFR offers a precise, catheter-based answer about whether a narrowing is actually limiting blood flow to the heart.

运动如何阻断疼痛:运动员心脏的致命秘密

IGF-1 (Insulin-Like Growth Factor 1)

定义

IGF-1 is a hormone produced mainly by the liver in response to dietary protein and growth hormone; it promotes cell growth and division throughout the body. Elevated IGF-1 is beneficial for muscle maintenance in older adults but has also been associated in observational studies with increased cancer risk in middle-aged adults, which is why high protein intake before age 65 carries a different ris…

为什么这很重要

IGF-1 is the key hormonal link between a high-protein diet and both its muscle-building benefits and its potential cancer-related risks.

是什么在65岁前夺走你的生命,却可能在65岁后拯救你——蛋白质的悖论

Ikaria (Blue Zone Reference)

定义

A Greek island frequently cited in longevity research as a population with unusually low rates of heart disease and long life expectancy; epidemiologists attribute this partly to a predominantly plant-based, low-saturated-fat Mediterranean diet combined with active lifestyles.

为什么这很重要

Population data from places like Ikaria provide real-world evidence supporting the dietary approach the author adopted.

资深运动员的心脏病:我是如何逆转动脉阻塞并在65岁打破世界纪录的

IL-1β (Interleukin-1 Beta)

定义

IL-1β is a pro-inflammatory cytokine released by activated macrophages—particularly after NLRP3 inflammasome assembly—that amplifies local plaque inflammation and stimulates IL-6 production, which in turn drives hepatic CRP synthesis; Mendelian randomization evidence supports IL-1β signaling as a causal driver of ASCVD risk rather than a mere marker.

为什么这很重要

IL-1β is the upstream 'fire' that CRP merely signals; targeting it (as the CANTOS trial did with canakinumab) reduced cardiovascular events independent of cholesterol lowering.

Read: Which Came First – the Lipid or the Inflammation? Apolipoprotein B and the Chicken-and-Egg Problem of Atherogenesis

白介素-6

定义

Interleukin-6, or IL-6, is a signaling molecule the immune system uses to spread an inflammatory message through the body.

为什么这很重要

It sits upstream of C-reactive protein, which is why CRP rises when IL-6 does. Blocking this pathway is one of the main strategies being tested for reducing inflammatory risk that persists after cholesterol is controlled.

阅读:基因彩票:为什么你不能指望自己“刀枪不入”

IL-6 Receptor (IL6R) Pathway

定义

The interleukin-6 receptor (IL6R) pathway mediates the inflammatory signalling of IL-6; Mendelian randomization studies of the Asp358Ala variant in IL6R show that attenuating this pathway reduces coronary heart disease risk independently of lipid levels, supporting a causal role for inflammatory signalling in plaque progression.

为什么这很重要

It illustrates that cardiovascular risk is not solely determined by particle burden — inflammatory biology operates as a partly independent modifier of atherosclerosis.

基因好能战胜血脂差吗?

IL-6 Trans-Signaling

定义

A mode of interleukin-6 signaling in which IL-6 binds to its soluble receptor (sIL-6R) rather than the membrane-bound form, allowing the complex to activate the signal-transducing subunit gp130 on virtually any cell type, including vascular endothelial cells that would not otherwise respond to IL-6.

为什么这很重要

Trans-signaling extends inflammation to the artery wall; variants that reduce it help explain genetic protection against atherosclerosis.

阅读:基因彩票:为什么你不能指望自己“刀枪不入”

成像陷阱

定义

The Imaging Trap is the clinical scenario in which a patient with significant inherited cardiac risk receives a zero Coronary Artery Calcium score and is falsely reassured, when in reality dangerous soft non-calcified plaque may already be present and detectable only by Coronary CT Angiography.

为什么这很重要

It is the central clinical hazard the app is designed to help users recognize and avoid.

Read: The Heart Health App That Finally Asks the Right Question

Imbalanced Intervention

定义

An imbalanced intervention is a methodological flaw in a clinical trial in which different study arms receive substantially different levels of support—such as free food and intensive coaching in one group versus an information pamphlet in another—making it impossible to attribute outcome differences to the dietary treatment alone.

为什么这很重要

Recognizing this flaw in PREDIMED is essential for correctly interpreting what that trial does and does not prove about the Mediterranean diet.

阅读:已被证实唯一能消除动脉斑块的饮食(不是地中海饮食!)

Immuno-Lipidology

定义

A framework for understanding atherosclerosis that integrates immunology and lipid biology, viewing plaque not as passive fat accumulation but as a chronic inflammatory response driven by the immune system's reaction to retained lipoproteins in the arterial wall.

为什么这很重要

It explains why patients with 'normal' cholesterol still have heart attacks—the immune response to trapped particles matters as much as the particles themselves.

炎症、脂蛋白与以低密度脂蛋白(LDL)为中心的时代的终结

Immunosenescence

定义

The age-related decline in immune system function, including reduced capacity to clear damaged cells and resolve inflammation, which allows atherosclerotic plaques to persist and enlarge rather than be kept in check.

为什么这很重要

Recognizing that the immune system weakens with age clarifies why plaque management becomes harder as we get older.

Read: How Does Age Affect Atherosclerosis? A Q&A Explainer

Immunoturbidimetric Assay

定义

A laboratory technique that measures protein concentration by detecting how much a sample scatters light after adding a specific antibody; both ApoB and Lp(a) are routinely quantified this way, providing direct measurements that do not rely on calculated estimates.

为什么这很重要

Knowing that ApoB is directly measured—not calculated—helps explain why it is more reliable than Friedewald-derived LDL-C in many clinical situations.

载脂蛋白B、脂蛋白(a)与C反应蛋白在动脉粥样硬化进展中的综合动力学

IMPACT Model

定义

The IMPACT model is an epidemiological tool used to estimate how much of the observed decline in coronary heart disease deaths can be attributed to changes in population risk factors versus medical treatments, by combining data on risk-factor trends with evidence on the effectiveness of individual interventions.

为什么这很重要

IMPACT-type analyses are the main source for claims about what fraction of the heart-disease decline came from prevention versus medicine — understanding the model helps you judge those percentages critically.

心血管疾病史

In-Stent Thrombosis

定义

The formation of a blood clot inside a coronary stent, a potentially fatal complication that is more common with drug-eluting stents because the drug delays full coverage of the metal by endothelial cells.

为什么这很重要

In-stent thrombosis is one of the main reasons patients with stents must take antiplatelet drugs indefinitely.

Read: The Ins and Outs of Cardiac Stents

Incomplete Apposition

定义

A condition in which a stent fails to make full contact with the artery wall after deployment, leaving gaps where blood can flow behind the stent struts and clots may form on surfaces that never become covered by endothelial cells.

为什么这很重要

Incomplete apposition is a recognized mechanical cause of late in-stent thrombosis and illustrates why precise stent sizing and deployment matter.

Read: The Ins and Outs of Cardiac Stents

Incretin

定义

Incretins are gut-derived hormones — principally GLP-1 and GIP — released after eating that amplify insulin secretion in a glucose-dependent manner; the drug classes discussed throughout this article are designed to mimic or enhance incretin signaling, hence the umbrella term 'incretin-based therapies.'

为什么这很重要

The word 'incretin' appears repeatedly in the clinical section as the unifying category for these drugs, and knowing its meaning clarifies how they all relate to each other.

Read: Ozempic and Mounjaro: Saving Your Heart BEFORE the Scale Moves

Incretin Therapy

定义

Incretin therapies are a class of drugs — including GLP-1 receptor agonists such as semaglutide and tirzepatide — that mimic gut hormones to lower blood sugar, reduce appetite, and promote weight loss. The article identifies them as central to the 'cardiometabolic revolution' likely to shape the next era of cardiovascular prevention.

为什么这很重要

Because obesity and type 2 diabetes are now pushing coronary risk in the wrong direction, incretin therapies represent a promising tool for addressing the cardiometabolic drivers that are stalling further progress.

心血管疾病史

独立预测变量

定义

A variable that statistically forecasts an outcome—such as mortality—even after accounting for other known risk factors like age, BMI, and cholesterol through multivariable analysis.

为什么这很重要

The article uses this term to argue that VO₂ max carries prognostic information beyond conventional cardiovascular risk factors.

Read: VO₂ max: the determinant of Health and Longevity?

Indicator Amino Acid Oxidation (IAAO)

定义

Indicator amino acid oxidation is a research technique that estimates the body's total protein requirement by tracking how much of a tracer amino acid is burned off as the test protein intake increases; the inflection point where oxidation drops signals that protein needs are being met. The article cites IAAO studies suggesting endurance-trained adults need roughly 1.6–1.8 g of protein per kilogr…

为什么这很重要

It is the specific method behind the higher protein-requirement figures used to justify the 40-gram-per-meal target for master athletes.

是什么在65岁前夺走你的生命,却可能在65岁后拯救你——蛋白质的悖论

Industry Funding

定义

Financial sponsorship of scientific research by commercial entities with a stake in the outcome; studies funded by industry have been shown to be more likely to report results favorable to the sponsor's product, introducing systematic bias into health evidence.

为什么这很重要

Recognizing who paid for a study is a basic tool of critical appraisal, helping readers weigh health claims more accurately.

Read: Peter Megdal on The Lynchpin Podcast

Inflammaging

定义

A chronic, low-grade, sterile inflammatory state that develops with advancing age as the immune system loses its ability to fully resolve acute inflammatory responses; in the arteries it promotes endothelial dysfunction, lipid retention, and plaque progression.

为什么这很重要

Inflammaging is a key mechanism linking age to atherosclerosis and a potential target for future preventive therapies.

Read: How Does Age Affect Atherosclerosis? A Q&A Explainer

炎症

定义

Inflammation is your immune system's response to injury or something it treats as an invader. It brings swelling, heat, and cleanup cells.

为什么这很重要

In arteries, inflammation starts because cholesterol particles got trapped in the wall. It then makes everything worse — thinning the plaque's protective cap and enlarging its greasy core. It is a powerful accelerator, but it is not the spark.

Read: Which Came First – the Lipid or the Inflammation? Apolipoprotein B and the Chicken-and-Egg Problem of Atherogenesis

遗传危害系数

定义

The Inherited Hazard Coefficient is a proprietary quantitative formula (H = Σ(R × W) / A) that weights each family member's cardiac event by degree of biological relationship, severity of the event, and age at which it occurred, producing a single numerical index of a person's inherited cardiac risk load.

为什么这很重要

It is the core calculation behind the app and represents a more granular alternative to the simple yes/no family-history checkbox used by standard risk tools.

Read: The Heart Health App That Finally Asks the Right Question

胰岛素抵抗

定义

Insulin resistance is when your cells stop responding well to insulin, so your pancreas has to pump out more and more to do the same job.

为什么这很重要

It usually shows up years before blood sugar rises enough to be called diabetes. It also scrambles your cholesterol particles — making them smaller and more numerous — so your LDL number can look fine while your actual particle count is high.

不要再迷信低密度脂蛋白(LDL)!关于载脂蛋白B(ApoB)、胰岛素抵抗与糖尿病的真相

强化生活方式干预

定义

A structured, multi-component therapeutic program combining a whole-food, plant-based diet very low in fat and sugar, regular moderate exercise, formal stress management, and strong social support; the article identifies ILM—modeled on the Ornish Lifestyle Medicine Program—as the sustained intervention responsible for the multi-vessel regression documented in the Megdal Serial Angiogram.

为什么这很重要

ILM is the specific 'prescription' shown to reverse coronary blockages without drugs or surgery.

Read: Expert Angiographic Evaluation of Coronary Artery Disease Regression: The Megdal Serial Angiogram (2014–2018)

Intercostal Muscles

定义

The muscles between the ribs that drive chest expansion during breathing; at maximal aerobic effort they bear a significant share of the respiratory workload and can themselves become a source of fatigue.

为什么这很重要

When the intercostals fatigue during intense exercise, breathing efficiency drops and less oxygen reaches working muscles.

Read: The Hour That Would Not End

INTERHEART

定义

INTERHEART was a large international case-control study that compared risk factors in people who had had a first heart attack against matched controls across 52 countries. The article cites its finding that permanent general stress carried an odds ratio of 2.17 for myocardial infarction, with psychosocial factors together accounting for a population-attributable risk of roughly 32.5%.

为什么这很重要

INTERHEART is one of the most frequently cited sources for stress-and-heart-attack statistics, so knowing its design helps you interpret those numbers correctly.

Read: Does stress kill you and does meditation save you?

白细胞介素-1β (IL-1β)

定义

A pro-inflammatory protein released by activated macrophages after the NLRP3 inflammasome is triggered; it signals the liver to produce CRP and amplifies the inflammatory response within developing plaques.

为什么这很重要

It is a key link in the chain connecting plaque inflammation to measurable blood markers—and is a direct target of drugs like colchicine.

炎症、脂蛋白与以低密度脂蛋白(LDL)为中心的时代的终结

白介素-6(IL-6)

定义

A signaling protein produced in response to IL-1β during plaque inflammation that travels to the liver and stimulates CRP production; elevated circulating IL-6 therefore reflects active vascular inflammation.

为什么这很重要

Its role as the trigger for CRP production means targeting the IL-6 pathway is a strategy for reducing residual cardiovascular risk.

炎症、脂蛋白与以低密度脂蛋白(LDL)为中心的时代的终结

Intermittent Fasting

定义

Intermittent fasting is a dietary pattern that cycles between defined periods of eating and voluntary abstinence from calories; in the context of this article it is described alongside carbohydrate restriction as the approach Dr. Dayspring used to achieve significant weight loss and improve his metabolic laboratory markers.

为什么这很重要

It is presented as a practical lifestyle lever that can shift cardiovascular risk markers, making it relevant to readers considering non-pharmacological prevention.

胆固醇:它有什么用?

Interstitial Fluid (IF)

定义

Interstitial fluid is the clear fluid occupying the spaces between cells in body tissues; researchers use its lipoprotein content as a window into vascular-wall biology, reasoning that particles crossing the endothelium without being trapped should appear in interstitial fluid, while trapped particles are absent from it.

为什么这很重要

Studies showing 58% less ApoB in the interstitial fluid of people with diabetes provide direct human evidence that artery walls actively capture these particles.

不要再迷信低密度脂蛋白(LDL)!关于载脂蛋白B(ApoB)、胰岛素抵抗与糖尿病的真相

Interstitial Myocardial Fibrosis

定义

Interstitial myocardial fibrosis is the diffuse scarring and replacement of heart muscle cells with fibrous connective tissue throughout the myocardium; in chimpanzees, fatal cardiac events are caused by this process rather than by atheromatous plaque rupture, distinguishing their heart disease pattern from that of humans.

为什么这很重要

The fact that chimps die of fibrosis rather than plaque rupture, despite similar lipid profiles, highlights that human atherosclerosis may involve immune mechanisms beyond classical risk factors.

你的免疫系统在与你的牛排开战吗?

Interventional Cardiologist

定义

An interventional cardiologist is a cardiologist with specialized training in catheter-based procedures such as coronary angiography, angioplasty, and stent placement. They differ from a medical (non-interventional) cardiologist, who focuses on diagnosis and drug-based management rather than procedural treatment.

为什么这很重要

Patients benefit from understanding the difference between the physician who manages their medication and the one who performs procedures in the catheter laboratory.

Read: Peter Megdal of curingheartdisease.com Interview

Intima-Media Thickness

定义

Intima-media thickness, or IMT, is a measurement of how thick the inner layers of an artery have become, usually taken in the neck with ultrasound.

为什么这很重要

Researchers like it because it is easy and harmless to measure repeatedly. Just be careful reading claims about it: a thinner measurement in a study is not the same thing as plaque shrinking in your heart.

阅读:已被证实唯一能消除动脉斑块的饮食(不是地中海饮食!)

Intimal Thickening

定义

Intimal thickening is an early adaptive or pathological increase in the thickness of the innermost layer of an artery (the intima), which can reflect either normal developmental changes or the accumulation of smooth muscle cells, lipids, and inflammatory cells that precede overt plaque formation. It is measurable non-invasively by carotid intima-media thickness ultrasound.

为什么这很重要

Detecting intimal thickening offers a window into arterial aging years before a clinical event, giving time for preventive action.

从子宫到逆转:消除一生的动脉损伤

Intimal Xanthoma

定义

Intimal xanthoma is the histological term for what is commonly called a fatty streak—the earliest true atherosclerotic lesion, in which apoB-containing lipoprotein particles are retained in the subendothelial matrix and engulfed by macrophages to form lipid-laden foam cells.

为什么这很重要

It marks the boundary between normal arterial adaptation and genuine disease, and its presence in fetal aortas shows how early atherosclerosis can begin.

先天性疾病

颅内动脉粥样硬化性疾病

定义

Intracranial atherosclerotic disease is the buildup of atherosclerotic plaque within the arteries inside the skull, narrowing vessels that supply brain tissue and contributing to stroke, chronic hypoperfusion, and cognitive impairment.

为什么这很重要

ICAD is a key link in the article's proposed chain from ApoB-driven arterial disease to Alzheimer's, and longitudinal imaging studies show that baseline ICAD predicts subsequent amyloid and tau accumulation.

阿尔茨海默病其实始于你的动脉吗?

Intramyocellular Fat (Intramyocellular Lipids)

定义

Triglyceride droplets stored inside skeletal muscle fibres; elevated intramyocellular fat is associated with impaired insulin signalling and is one mechanism by which high-fat diets may worsen insulin resistance in muscle tissue.

为什么这很重要

The article notes that reducing intramyocellular and liver fat—achievable with a high-fibre plant-based diet—can improve insulin resistance without requiring ketosis.

生酮饮食 vs. 全食植物性饮食:关于运动表现、胰岛素敏感性、逆转心脏病和长寿的硬核证据是什么?

Intramyocellular Lipids

定义

Fat droplets stored inside skeletal muscle cells; elevated intramyocellular lipid accumulation interferes with insulin signaling and is associated with insulin resistance even when blood glucose appears controlled on a low-carbohydrate diet.

为什么这很重要

Understanding this mechanism explains why blood sugar can look normal on keto while underlying insulin resistance persists.

营养学大辩论:原始人饮食法/生酮饮食/旧石器饮食与全食物植物性饮食对长寿和心脏病影响的循证现实

Intravascular Ultrasound

定义

Intravascular ultrasound, or IVUS, uses a tiny ultrasound probe threaded inside a coronary artery to photograph the wall from within.

为什么这很重要

It is the closest thing we have to seeing plaque directly in a living person. Studies using it are how we know that aggressive cholesterol lowering can genuinely shrink plaque, not just slow it down.

阅读:已被证实唯一能消除动脉斑块的饮食(不是地中海饮食!)

因纽特人悖论

定义

The Inuit Paradox was the widely cited but now largely discredited claim that Greenland Inuit populations had exceptionally low rates of ischemic heart disease despite a high-fat diet rich in marine mammals; subsequent analyses showed the low rates were artifacts of mortality misclassification, shorter lifespans, and high infectious disease burden rather than genuine cardiac protection.

为什么这很重要

The Inuit Paradox was used for decades to argue against the lipid hypothesis, so knowing why it was wrong matters for evaluating diet and heart health claims.

胆固醇大谎言:揭露饮食行业的有组织否认

Invasive Angiogram (Coronary Angiography)

定义

An invasive coronary angiogram is a catheter-based procedure in which a wire is threaded into the coronary arteries and radio-opaque dye is injected so that X-ray imaging can reveal the location and severity of arterial blockages. Unlike non-invasive coronary CT angiography, it requires arterial access and is performed in a cardiac catheterization laboratory.

为什么这很重要

This is the gold-standard test that confirmed the patient's diagnosis and led directly to stent placement; understanding the procedure helps patients know what to expect if it is recommended.

Read: Peter Megdal of curingheartdisease.com Interview

Invasive Angiography (Gold Standard)

定义

A procedure in which a catheter is threaded through a blood vessel to the heart and contrast dye is injected directly into the coronary arteries, producing X-ray images of their interior; it is considered the reference standard against which non-invasive imaging tests are validated for detecting stenosis.

为什么这很重要

The article uses it to explain why an AI AUC of 0.91 measures diagnostic accuracy against anatomy today, not prediction of future events.

一种无需手术透视心脏的新方法——预测心脏病发作的最佳途径

鸢尾素

定义

Irisin is a myokine released from skeletal muscle during exercise that promotes the conversion of energy-storing white adipose tissue into metabolically active brown adipose tissue, thereby increasing energy expenditure. The article cites it as one of the key chemical messengers linking resistance training to systemic metabolic improvements.

为什么这很重要

Irisin illustrates how muscle contraction sends beneficial signals to fat and metabolic tissue, helping explain heart-health benefits of strength training.

Read: Can pumping iron help your pumping heart?

ISCHEMIA Trial

定义

The International Study of Comparative Health Effectiveness with Medical and Invasive Approaches randomized 5,179 patients with stable coronary artery disease and moderate-to-severe ischemia to an upfront invasive strategy or medical therapy alone, finding no significant difference in the primary composite cardiovascular endpoint.

为什么这很重要

It confirmed COURAGE's findings using modern drug-eluting stents and imaging technology, strengthening the case for medical therapy in stable disease.

治疗生物学而非管道:心脏病学激进的新方法

ISCHEMIA-EXTEND

定义

ISCHEMIA-EXTEND is the observational follow-up of the ISCHEMIA trial, tracking surviving participants for up to seven years; it found that an invasive strategy reduced cardiovascular mortality but increased non-cardiovascular deaths, leaving overall survival neutral between the two groups.

为什么这很重要

Its nuanced finding—that surgery shifted the cause of death rather than reducing total deaths—is central to the article's argument that intervention is not a straightforward life-extender.

治疗生物学而非管道:心脏病学激进的新方法

Ischemic Heart Disease

定义

A condition in which reduced blood supply to the heart muscle, usually from coronary artery atherosclerosis, causes symptoms such as angina or myocardial infarction.

为什么这很重要

This is the primary condition the diets discussed are claimed to prevent and reverse, so recognising the term clarifies what the research is measuring.

Read: Can Diet Really Reverse Heart Disease?

Ischemic Preconditioning

定义

Ischemic preconditioning is a protective cellular response in which a brief, sublethal episode of myocardial ischemia renders the heart more resistant to injury from a subsequent, more prolonged ischemic episode, mediated partly through mitochondrial K-ATP channels and adenosine release. It is one mechanism explaining why warm-up angina can disappear as exercise continues.

为什么这很重要

It helps explain why an athlete's heart can seemingly 'adapt' to early warning pain, masking a serious underlying problem.

运动如何阻断疼痛:运动员心脏的致命秘密

缺血性中风

定义

An ischemic stroke happens when blood flow to part of the brain is blocked and brain tissue starts to die.

为什么这很重要

Warning signs come on suddenly: a drooping face, a weak arm, slurred speech, sudden vision or balance trouble. Every minute counts, so this is a call-911-immediately situation, not a wait-and-see one.

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J

J-Curve

定义

A J-curve describes a pattern where risk is higher at both very high and very low values of something, with a sweet spot in the middle. Plotted on a graph it looks like the letter J.

为什么这很重要

It comes up most with blood pressure. Bringing very high pressure down clearly helps, but pushing it extremely low may not help everyone, especially older people with stiff arteries.

J-Shaped Curve

定义

A statistical pattern in epidemiological data where light-to-moderate consumers of alcohol appear to have lower cardiovascular risk than both abstainers and heavy drinkers, producing a curve shaped like the letter J when risk is plotted against consumption level; the validity of this pattern has been increasingly challenged by Mendelian randomization studies and better adjustment for confounding.

为什么这很重要

Understanding this curve is central to evaluating whether moderate drinking is genuinely protective or a statistical artifact.

半满的玻璃杯:为什么科学正向“有益心脏健康”的饮酒习惯挥手告别

JAK2 Mutation

定义

JAK2 is a specific gene mutation that can drive clonal hematopoiesis; unlike the common CHIP mutations that roughly double cardiovascular risk, the JAK2 variant is associated with a much larger increase — sometimes cited as a 12-fold rise — making it an outlier within the broader CHIP category.

为什么这很重要

Knowing that JAK2 is an extreme outlier prevents misreading alarming statistics about CHIP risk as applying to everyone with the condition.

Read: Heart disease accelerates as you age

JELIS Trial

定义

A large Japanese randomized trial that tested high-dose EPA supplementation in hypercholesterolemic patients on statins and found reductions in coronary events and stroke recurrence, providing early evidence for EPA-specific cardiovascular benefit.

为什么这很重要

JELIS is cited alongside REDUCE-IT to support the idea that purified EPA has a genuine treatment effect independent of the mineral-oil placebo controversy.

Read: Heart Disease and Fish Oil

Job Strain

定义

Job strain is a research construct that combines high psychological demands at work with low control over how that work is done, and is one of the most studied occupational stress exposures in cardiovascular epidemiology. The article reports that high job strain is associated with roughly a 20–30% higher risk of coronary heart disease or stroke.

为什么这很重要

It gives a precise, measurable definition to 'work stress,' which is often used loosely in health reporting.

Read: Does stress kill you and does meditation save you?

木星

定义

JUPITER tested a statin in people whose cholesterol was normal but whose CRP was elevated, suggesting hidden inflammation.

为什么这很重要

Events dropped substantially, and the trial is a landmark in the argument that inflammation carries risk independent of cholesterol. Critics note the statin lowered both, so the two effects are hard to separate.

Read: Which Came First – the Lipid or the Inflammation? Apolipoprotein B and the Chicken-and-Egg Problem of Atherogenesis

JUPITER 试验

定义

The JUPITER (Justification for the Use of Statins in Prevention: an Intervention Trial Evaluating Rosuvastatin) trial enrolled individuals with 'normal' LDL-C but elevated hs-CRP and showed that rosuvastatin significantly reduced cardiovascular events in this population, demonstrating that inflammatory risk exists and is clinically significant even when conventional cholesterol metrics appear acc…

为什么这很重要

JUPITER revealed that millions of people thought to be low-risk based on LDL-C alone may still benefit from treatment because of hidden inflammatory burden.

Read: Which Came First – the Lipid or the Inflammation? Apolipoprotein B and the Chicken-and-Egg Problem of Atherogenesis

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K

Kandutsch–Russell Pathway

定义

The Kandutsch–Russell pathway is an alternative post-lanosterol route to cholesterol that proceeds through 7-dehydrocholesterol (7-DHC) and lathosterol, with the final step catalysed by DHCR7. Adult liver and kidney predominantly use a modified version of this pathway; deficiency of DHCR7 causes Smith–Lemli–Opitz syndrome due to toxic 7-DHC accumulation.

为什么这很重要

The 7-DHC intermediate in this pathway is also the precursor to vitamin D₃ in skin, linking cholesterol biosynthesis to bone and cardiovascular health.

百万美元分子:为什么你的身体为胆固醇付出巨资

生酮行动呼吁

定义

KETO-CTA is a study that used coronary CT angiography to assess plaque burden in individuals on ketogenic diets with markedly elevated LDL-C, finding that despite a high prevalence of zero CAC scores, non-calcified (soft) plaque volume increased approximately 42% over one year.

为什么这很重要

It is the most direct imaging evidence used to argue that high LDL on a keto diet may still accelerate early plaque growth even in metabolically healthy people.

Read: The Big Cholesterol Lie, Part 2

生酮饮食

定义

A ketogenic diet is very low in carbohydrates and very high in fat, which pushes the body to burn fat and make ketones for fuel.

为什么这很重要

It often improves weight, blood sugar, and triglycerides. But cholesterol responses vary enormously — some people barely change while others see their LDL and ApoB shoot up dramatically. Better blood sugar does not cancel out a large rise in harmful particles.

Read: The Big Cholesterol Lie, Part 2

肾病

定义

Kidney disease means the kidneys have lost some of their ability to filter waste from your blood.

为什么这很重要

It raises heart risk on its own, separately from anything else. Damaged kidneys drive up blood pressure, promote inflammation, and disturb the way calcium is handled in blood vessels.

Kinetic Chemical-Potential Buffer

定义

In lipoprotein physiology, the plasma lipoprotein system acts as a kinetic chemical-potential buffer by keeping free cholesterol on particle surfaces in continuous thermodynamic equilibrium with surrounding cell membranes, smoothing out moment-to-moment fluctuations in local tissue supply.

为什么这很重要

This function, rather than directed delivery, is one reason some cholesterol must circulate—but it requires far less than modern average plasma levels.

您的细胞会自行合成胆固醇——那为什么您的血液里到处都是它?

KLF2 Signaling

定义

A flow-sensitive transcription factor (Krüppel-like Factor 2) activated in endothelial cells by laminar shear stress during exercise; it promotes an anti-atherogenic gene expression profile, including upregulation of eNOS and suppression of inflammatory adhesion molecules.

为什么这很重要

It provides one molecular explanation for how exercise protects arteries at the gene-expression level, beyond just mechanical effects.

你的心脏比你更老吗?逆转心血管年龄的科学

Kringle IV Type 2 (KIV2) Repeats

定义

Looped protein domains within apolipoprotein(a) whose copy number varies widely between individuals; people with fewer KIV2 repeats produce smaller apo(a) isoforms and tend to have higher plasma Lp(a) concentrations, accounting for much of the inherited variability in Lp(a) levels.

为什么这很重要

This structural feature explains why Lp(a) levels differ so dramatically between people and why lifestyle changes cannot meaningfully lower them.

载脂蛋白B、脂蛋白(a)与C反应蛋白在动脉粥样硬化进展中的综合动力学

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L

左卡尼汀

定义

L-carnitine is a compound abundant in red meat that plays a role in fatty acid transport into mitochondria; gut bacteria can convert it through several steps—including the intermediate γ-butyrobetaine—into TMA and ultimately TMAO. The article cites it as the other major dietary precursor studied in TMAO research.

为什么这很重要

It explains why red meat specifically, and not just eggs or dairy, is targeted in TMAO research.

红肉正在通过你的肠道杀死你吗?关于TMAO的大骗局

L-Methylfolate (5-MTHF, 5-Methyltetrahydrofolate)

定义

The biologically active form of folate that serves as the methyl donor in the remethylation of homocysteine back to methionine; unlike standard folic acid, it does not require enzymatic conversion and can be used directly by the body regardless of MTHFR genotype.

为什么这很重要

Understanding what makes a B-vitamin supplement 'active' helps you evaluate whether paying more for it is justified.

补充L-甲基叶 folate + 活性B族维生素降低同型半胱氨酸能否帮助预防动脉粥样硬化并减少斑块?

Lap Time (Velodrome)

定义

The time taken to complete one circuit of the velodrome track—250 meters in this case—used by the athlete and coach as real-time feedback to regulate pacing during an event where no electronic displays are permitted.

为什么这很重要

Lap-time monitoring is the sole pacing tool available during the hour record, directly governing how hard the cardiovascular system is driven over 60 minutes.

Read: Cyclist Peter Megdal seeks out, and overcomes, difficult obstacles

Laplace's Law

定义

Laplace's Law states that wall tension in a hollow vessel equals the product of internal pressure and radius divided by wall thickness; in an aneurysm, both the enlarged radius and the thinned wall amplify mechanical tension with every heartbeat and every exercise-induced rise in blood pressure.

为什么这很重要

This law explains physically why an aneurysm grows more dangerous as it enlarges and why blood pressure control during exercise is so important.

运动员的主动脉:健康的心脏还是隐蔽的定时炸弹?

LAT1/SLC7A5

定义

LAT1 (encoded by the gene SLC7A5) is a leucine transporter protein on the cell surface that shuttles leucine and other large neutral amino acids into the cell; many cancer cells overexpress it to secure a continuous leucine supply that keeps mTORC1 constitutively active and supports rapid tumor growth. Its overexpression is cited in the article as evidence that leucine plays a context-dependent r…

为什么这很重要

It is the molecular mechanism that links leucine availability to cancer cell survival, helping explain why leucine's effects depend heavily on whether a tumor is already present.

是什么在65岁前夺走你的生命,却可能在65岁后拯救你——蛋白质的悖论

Late Gadolinium Enhancement

定义

Late gadolinium enhancement (LGE) is a cardiac MRI technique in which a contrast agent accumulates in areas of scarred or fibrotic myocardium and appears bright on delayed imaging, indicating previous microscopic or clinical cardiac injury; 12–14% of masters athletes in the studies described showed this pattern, sometimes without any prior diagnosed heart attack.

为什么这很重要

It reveals silent myocardial damage that standard stress tests or blood tests would miss, making it an important screening tool in aging athletes.

巅峰体能与隐形钙化:运动员的斑块积聚悖论

Late-Onset Hypogonadism

定义

Late-onset hypogonadism is a clinical syndrome in aging men characterized by low bioavailable testosterone combined with specific symptoms—particularly reduced sexual desire, poor morning erections, and erectile dysfunction—arising from a combination of declining testicular Leydig cell function and rising SHBG.

为什么这很重要

Recognizing this syndrome explains why some older men feel androgen-deficient even when their total testosterone appears normal.

Read: Testosterone Therapy and Your Heart: Why Your Total Score is Misleading

Lauric Acid (C12:0)

定义

A 12-carbon saturated fatty acid that constitutes roughly 45–53% of coconut oil's total fatty acids; although sometimes classified as a medium-chain fatty acid, it behaves metabolically more like a long-chain saturated fat, is partly transported via the lymphatic system in chylomicrons, and is among the most potent dietary raisers of LDL-cholesterol when substituted isocalorically for unsaturated…

为什么这很重要

Understanding where lauric acid sits between true MCTs and long-chain fats is central to evaluating coconut oil's cardiovascular claims.

椰子油作为健康食品的神话:行业如何左右你的饮食!

LCAT (Lecithin–Cholesterol Acyltransferase)

定义

LCAT is the plasma enzyme responsible for esterifying free cholesterol on HDL particles, converting it to cholesteryl ester and maintaining the roughly 70% esterified / 30% free ratio normally seen in plasma.

为什么这很重要

Dysfunction of LCAT disrupts cholesterol partitioning in the blood and is associated with HDL deficiency and kidney disease.

您的细胞会自行合成胆固醇——那为什么您的血液里到处都是它?

低密度脂蛋白

定义

LDL, or low-density lipoprotein, is the main particle that carries cholesterol through your blood — and the main one that gets stuck in artery walls.

为什么这很重要

Be careful with the word. Sometimes LDL means the particles themselves, and sometimes it means the cholesterol inside them. Those are different things, and confusing them is behind a lot of misleading lab results.

为什么载脂蛋白B(ApoB)很重要?

LDL Apheresis

定义

LDL apheresis is a treatment that filters harmful cholesterol particles directly out of the blood, using a machine similar to dialysis. It is usually done every week or two.

为什么这很重要

It is reserved for people with severe inherited cholesterol conditions who cannot get low enough on medication alone. The effect is dramatic but temporary, since the liver keeps producing more.

Read: Children With 60-Year-Old Arteries: The Extreme Reality of HoFH

低密度脂蛋白胆固醇

定义

LDL cholesterol, or LDL-C, is the amount of cholesterol sitting inside your LDL particles. It is the number on almost every standard lab report.

为什么这很重要

Here is the catch: it measures cargo, not vehicles. Two people with identical LDL-C can be carrying very different numbers of particles. The one with more particles has more risk, and the standard panel won't tell them.

为什么你‘正常’的胆固醇其实是一个警告信号

LDL Receptor

定义

The LDL receptor is a docking port on liver cells that grabs LDL particles out of the blood and pulls them in to be broken down.

为什么这很重要

The more of these ports you have working, the cleaner your blood stays. Statins, ezetimibe, PCSK9 inhibitors, and inclisiran all end up doing the same basic thing: increasing the number of working receptors.

您的细胞会自行合成胆固醇——那为什么您的血液里到处都是它?

LDL Receptor (LDLR) Recycling

定义

The process by which LDL receptors on liver cell surfaces bind and internalize ApoB-containing lipoprotein particles, then return to the cell surface to capture more particles; PCSK9 normally tags these receptors for destruction after endocytosis, and blocking PCSK9 allows receptors to recycle repeatedly, dramatically increasing LDL clearance.

为什么这很重要

LDLR recycling is the molecular reason why PCSK9 inhibitors and inclisiran are so potent—they effectively multiply the liver's ability to remove atherogenic particles.

Read: The Cholesterol Breakthrough: From Daily Pills to Twice-a-Year Shots

LDL Receptor Saturation

定义

LDL receptor saturation occurs when the number of circulating ApoB-containing particles exceeds the clearance capacity of LDL receptors on liver and other cells; once receptors are fully occupied, additional particles remain in the bloodstream longer and are more likely to enter and be retained in the arterial wall, accelerating plaque formation.

为什么这很重要

Saturation is the mechanistic reason why extremely high cholesterol overwhelms even a healthy body's defenses, regardless of overall metabolic fitness.

Read: Does metabolic health protect you from high cholesterol?

LDL Target

定义

A specific numerical goal for LDL cholesterol concentration that a clinician aims to achieve through diet, lifestyle, or medication; targets are set based on a patient's overall cardiovascular risk, with higher-risk patients typically assigned lower targets.

为什么这很重要

Understanding that treatment is driven by a personalized goal — not a one-size number — helps readers engage meaningfully with their own lipid results.

阅读:《重新思考心脏健康:彼得·梅格达尔如何将一纸诊断转化为推动变革的使命》

LDL-C (LDL Cholesterol Mass)

定义

LDL-C measures the total mass of cholesterol carried inside LDL particles per unit volume of blood, not the number of particles themselves; it is the traditional surrogate used in standard lipid panels but can underestimate cardiovascular risk when LDL particles are small and cholesterol-depleted, causing ApoB and LDL-C to diverge.

为什么这很重要

Understanding what LDL-C actually measures—and what it misses—explains why your standard cholesterol test may not tell the whole story.

年轻时(20多岁和30多岁)胆固醇高,即使日后降下来了,以后也会引发心脏病发作吗?

LDL-C-Years

定义

LDL-C-years is a cumulative exposure metric that multiplies a person's LDL cholesterol level by the number of years they have carried it, capturing lifetime arterial burden rather than a single snapshot; a threshold of roughly 5,000 mg/dL-years is used to identify the point at which clinically significant plaque risk accumulates.

为什么这很重要

It reframes cholesterol risk as a running total rather than a one-time reading, showing why high cholesterol in your 20s and 30s still matters decades later.

年轻时(20多岁和30多岁)胆固醇高,即使日后降下来了,以后也会引发心脏病发作吗?

低密度脂蛋白胆固醇与载脂蛋白B不一致

定义

A clinical pattern in which a patient's measured LDL cholesterol mass appears acceptable while the ApoB particle count is elevated, indicating more atherogenic particles than the cholesterol number alone would suggest; common in metabolic syndrome and hypertriglyceridemia.

为什么这很重要

Recognizing discordance is why physicians increasingly measure ApoB alongside LDL-C rather than relying on LDL-C alone.

载脂蛋白B、脂蛋白(a)与C反应蛋白在动脉粥样硬化进展中的综合动力学

LDL-Years

定义

LDL-years is a cumulative exposure metric defined as the area under the LDL-cholesterol-versus-age curve, representing the total cholesterol cargo delivered to the artery wall over a lifetime; it has the most mature longitudinal validation of any cumulative lipid metric and predicts cardiovascular events independently of midlife LDL-C.

为什么这很重要

It illustrates that the same LDL level carries very different risk depending on how long a person has carried it.

载脂蛋白B:更长、更高、更糟

低密度脂蛋白受体

定义

LDLR is the gene that builds the LDL receptor, the docking port your liver uses to pull cholesterol particles out of circulation.

为什么这很重要

Faults in this gene are the most common cause of familial hypercholesterolemia. How much working receptor a person can build largely determines how high their cholesterol runs from birth.

Read: Children With 60-Year-Old Arteries: The Extreme Reality of HoFH

LDLR-Deficient Mice

定义

A well-established animal model of atherosclerosis in which the gene encoding the LDL receptor is knocked out, causing cholesterol-rich lipoproteins to accumulate in the blood and accelerate plaque formation; widely used to test how environmental exposures affect cardiovascular disease.

为什么这很重要

Knowing the model helps readers judge how directly the mouse findings translate to human biology.

问答:日常微塑料是否在助长心脏病?

LDLRAP1 (Autosomal Recessive Hypercholesterolemia)

定义

LDLRAP1 encodes an adaptor protein required for the internalization of the LDL receptor–LDL complex into liver cells; biallelic loss-of-function variants cause autosomal recessive hypercholesterolemia (ARH), a form of HoFH in which the receptor can bind LDL but cannot pull it inside the cell, generally producing a somewhat milder phenotype than null LDLR mutations.

为什么这很重要

ARH illustrates that HoFH can arise from defects at different steps in the LDL clearance pathway, with implications for prognosis and treatment response.

Read: Children With 60-Year-Old Arteries: The Extreme Reality of HoFH

Lean Mass

定义

The portion of body weight attributable to muscle, bone, and organs rather than fat; higher lean mass is associated with better metabolic health and is identified in the article as an upstream genetic driver of both VO₂ max and longevity.

为什么这很重要

The article positions lean mass as a root cause of longevity rather than VO₂ max itself, making it central to its causal argument.

Read: VO₂ max: the determinant of Health and Longevity?

瘦体重大反应者

定义

A lean mass hyper-responder is someone lean and athletic whose LDL cholesterol rises enormously on a low-carbohydrate diet — sometimes to levels normally seen only in inherited disorders.

为什么这很重要

Supporters argue that in a metabolically healthy person this pattern may be harmless. That claim has not been tested against hard outcomes like heart attacks, so it remains an open question rather than a settled one.

Read: The Big Cholesterol Lie, Part 2

莱卡纳马布

定义

Lecanemab is an anti-amyloid monoclonal antibody approved for early Alzheimer's disease that reduces amyloid-beta plaques in the brain and modestly slows cognitive decline, but carries risks of brain swelling and bleeding.

为什么这很重要

It represents the current frontier of amyloid-targeting therapy and illustrates both the promise and limits of treating Alzheimer's by clearing amyloid alone.

阿尔茨海默病其实始于你的动脉吗?

Left Anterior Descending Artery (LAD)

定义

The left anterior descending artery is the largest branch of the left coronary artery and supplies blood to the front and lower-left wall of the heart; it is the vessel most commonly affected by significant atherosclerosis. Its sharp take-off angle creates disturbed, turbulent blood flow that promotes preferential plaque deposition at that site.

为什么这很重要

Because the LAD feeds so much of the heart, disease here is a leading cause of serious heart attacks—understanding why it is vulnerable helps explain the geography of coronary disease.

从子宫到逆转:消除一生的动脉损伤

Left Atrial Enlargement

定义

Structural expansion of the left atrium of the heart, associated with chronic alcohol consumption; the enlarged and remodeled atrium develops low-voltage zones (fibrotic areas) that act as substrates sustaining persistent atrial fibrillation.

为什么这很重要

It explains why long-term drinking can make atrial fibrillation harder to treat, even after stopping alcohol.

半满的玻璃杯:为什么科学正向“有益心脏健康”的饮酒习惯挥手告别

Left Ventricular Compliance

定义

The ability of the left ventricle to expand and fill with blood at low pressure during diastole; reduced compliance—caused by myocardial stiffness or fibrosis—means the heart must generate higher pressures to fill, impairing its pumping efficiency.

为什么这很重要

Restoring left ventricular compliance is the central target of the exercise protocols described in this article for reversing sedentary heart aging.

你的心脏比你更老吗?逆转心血管年龄的科学

左心室射血分数

定义

The percentage of blood pumped out of the heart's main pumping chamber with each beat; a normal value is 55 percent or above, and a rising ejection fraction after heart disease is a measurable sign of cardiac recovery.

为什么这很重要

It is the most widely used clinical index of how well a damaged heart is recovering its pumping function.

Read: The Hour That Would Not End

Left Ventricular Hypertrophy

定义

Pathological thickening of the muscular wall of the left ventricle, most commonly caused by sustained high blood pressure forcing the heart to work harder; even after blood pressure is normalized, some degree of structural hypertrophy may persist.

为什么这很重要

This is cited in the article as another example of how structural remodeling can outlast the active disease driving it, reinforcing the cure-versus-scar framework.

Read: Can Heart Disease Be Cured?

LENS Trial

定义

The LENS trial (2024) was a randomized controlled trial providing landmark evidence that fenofibrate, a drug that lowers triglyceride-rich ApoB-containing particles, slows the progression of diabetic retinopathy.

为什么这很重要

It is the key clinical trial linking ApoB-targeted therapy to preservation of eye health in people with diabetes.

为什么载脂蛋白B(ApoB)很重要?

Leptin Resistance

定义

Leptin resistance is a state in which the brain fails to respond normally to leptin — the adipose-derived hormone that suppresses appetite and promotes energy expenditure — despite elevated circulating levels; in obesity it is partly mediated by increased expression of the suppressor protein SOCS3, which blunts the JAK2/STAT3 signaling pathway.

为什么这很重要

Leptin resistance helps explain why obesity is self-reinforcing: the hormonal signal telling the brain to stop eating loses its effect.

阅读:为什么腹部脂肪比你想象的更危险

Lesion

定义

In cardiology, a lesion refers to a discrete area of atherosclerotic plaque narrowing a coronary artery, typically described by the percentage of luminal obstruction it causes. The article describes four residual lesions too small in vessel diameter to accept a stent after the most critical one was treated.

为什么这很重要

The term appears frequently in cardiology reports and office notes, and understanding it helps patients interpret their own diagnosis.

Read: Peter Megdal of curingheartdisease.com Interview

Leukocyte Adhesion

定义

The process by which white blood cells attach to the endothelial surface of blood vessels, a key early step in atherogenesis; nitric oxide and an intact glycocalyx normally suppress this adhesion.

为什么这很重要

Reducing leukocyte adhesion is one of the ways a healthy endothelium prevents new plaque formation.

Read: Pathophysiological Determinants of Atherosclerotic Regression: The Criticality of Ultra-Low-Fat Whole-Food Plant-Based Nutritional Protocols

Leydig Cells

定义

Leydig cells are the testosterone-producing cells located in the testes; with aging their number declines and their steroidogenic capacity falls, contributing to the gradual reduction in testosterone production seen in older men.

为什么这很重要

These cells are the primary source of male testosterone, so their decline is a root cause of age-related androgen deficiency.

Read: Testosterone Therapy and Your Heart: Why Your Total Score is Misleading

Life's Simple 7

定义

Life's Simple 7 is a cardiovascular health framework defined by the American Heart Association comprising seven modifiable factors: blood pressure, cholesterol, blood sugar, physical activity, diet, body weight, and smoking status. It is used in research to score overall cardiovascular health and to assess concordance of health behaviors between individuals or couples.

为什么这很重要

The framework was used to show that couples share nearly identical health behaviors, providing context for how much individual exercise choices still matter.

Read: Exercise Doesn’t Erase Arterial Plaque – It Turns It to Stone!

生活方式心脏试验

定义

The Lifestyle Heart Trial, led by Dean Ornish, was a small randomized study testing an intensive lifestyle intervention — very low-fat plant-based diet, exercise, stress management, and group support — using serial coronary angiography; the intervention group's measured arterial narrowing improved slightly while controls worsened, but technical limitations of angiography, reference-segment narrow…

为什么这很重要

It is frequently cited as proof that lifestyle reverses heart disease, but its methodological limitations mean the evidence is weaker than often claimed.

Read: What’s more important, diet vs drugs, or outcome vs regression?

生活方式医学

定义

Lifestyle medicine uses everyday behavior — food, movement, sleep, stress, not smoking — to prevent and treat disease.

为什么这很重要

These changes are genuinely powerful and improve almost every measure of health. What they usually cannot do on their own is fully correct severe inherited cholesterol problems or erase decades of accumulated damage.

现代医学能拯救一个久坐不动的人吗?持续40年的三胞胎实验

脂类能量模型

定义

The Lipid Energy Model proposes that in lean, insulin-sensitive individuals with low hepatic glycogen—such as those on ketogenic diets—the liver upregulates VLDL export to supply fat fuel to peripheral tissues, causing LDL-C to rise as a downstream consequence of efficient energy metabolism rather than as a sign of classical dyslipidemia.

为什么这很重要

Understanding this model is essential for evaluating whether high LDL on a low-carb diet carries the same heart risk as high LDL from other causes.

Read: The Big Cholesterol Lie, Part 2

Lipid Paradox

定义

The lipid paradox refers to the observation in people in their 80s and 90s that the usual positive association between LDL cholesterol and heart disease weakens or even reverses, an apparent anomaly explained by reverse causation from illness lowering cholesterol, survivorship selection, and competing causes of death rather than any change in LDL's underlying biology.

为什么这很重要

The lipid paradox is frequently misread online as evidence that cholesterol does not matter in old age; understanding its causes prevents that misinterpretation.

Read: Heart disease accelerates as you age

Lipid Peroxidation

定义

Lipid peroxidation is a chain reaction in which reactive oxygen species attack the double bonds in unsaturated fatty acids, breaking them down into potentially harmful oxidation products; polyunsaturated fats in seed oils are more susceptible to this process than saturated or monounsaturated fats, particularly under heat or repeated frying.

为什么这很重要

It explains why cooking practices and oil storage matter, and why high-oleic versions of seed oils are considered more stable.

阅读:seed oils 是否健康,是真是假?

血脂检查

定义

A blood test panel that measures total cholesterol, LDL cholesterol, HDL cholesterol, and triglycerides, used to assess cardiovascular risk and monitor the effect of dietary or drug interventions.

为什么这很重要

Dietary programs are often judged partly by how much they improve lipid profiles, making this a key outcome measure in the article.

Read: Can Diet Really Reverse Heart Disease?

Lipid Rafts

定义

Lipid rafts are cholesterol-enriched microdomains within cell membranes that act as organized platforms for receptor tyrosine kinases, G-protein-coupled receptors, and other signalling molecules. Their integrity depends on adequate membrane cholesterol, underscoring why cholesterol is maintained as a structural asset rather than a fuel source.

为什么这很重要

Disruption of lipid raft organization is implicated in impaired endothelial signalling and may contribute to vascular dysfunction in atherosclerosis.

百万美元分子:为什么你的身体为胆固醇付出巨资

Lipid Tracking

定义

The tendency for an individual's lipid concentrations to maintain their relative rank within a population over time, so that a child with high LDL-C is likely to remain relatively high as an adult; documented from infancy through adulthood in longitudinal studies such as the Bogalusa Heart Study and Young Finns Study.

为什么这很重要

It means early cholesterol measurements in children are genuinely predictive of adult cardiovascular risk—not just a snapshot.

Read: Do Babies Need Statins?

Lipid-Core Burden Index (LCBI)

定义

A near-infrared spectroscopy (NIRS) measurement that quantifies the lipid content within a coronary plaque segment; reductions in LCBI under intensive therapy indicate that the plaque's vulnerable, lipid-rich core is shrinking.

为什么这很重要

It gives clinicians a way to confirm that a plaque is becoming more stable even when lumen size on angiography appears unchanged.

冠状动脉斑块消退、管腔悖论与运动员的血管重塑:整合药物与全食物植物性策略

Lipid-Rich Necrotic Core

定义

The lipid-rich necrotic core is the soft, fat- and inflammatory-cell-laden interior of an advanced atherosclerotic plaque; it is the most rupture-prone compartment and the one most responsive to lipid lowering, which can shrink and stabilize it even when surrounding calcified tissue remains.

为什么这很重要

It is the part of plaque most directly linked to heart attack risk and most modifiable by diet and medication.

Read: What is the difference between Mediterranean and whole-food plant-based diets for heart disease?

Lipid-Rich Plaque

定义

An atherosclerotic lesion whose core is dominated by cholesterol esters and inflammatory lipids rather than calcium or fibrous tissue; the article notes that such plaques are highly responsive to intensive treatment and that the dramatic 65-percentage-point regression at the diagonal branch origin is consistent with reversal of a lipid-rich lesion.

为什么这很重要

Lipid-rich plaques are the most rupture-prone but also the most reversible, making them the prime target for lifestyle therapy.

Read: Expert Angiographic Evaluation of Coronary Artery Disease Regression: The Megdal Serial Angiogram (2014–2018)

Lipidome

定义

The lipidome is the complete set of lipids present in a biological system, such as a cell, tissue, or organism; the brain has a particularly large and complex lipidome because lipids are essential to the structure and function of neuronal membranes.

为什么这很重要

Knowing the term helps you understand why the body's cholesterol needs go far beyond diet alone.

胆固醇:它有什么用?

脂蛋白脂肪酶

定义

Lipoprotein lipase is an enzyme anchored to the walls of small blood vessels that strips triglycerides out of passing particles and hands the fat to muscle and fat tissue.

为什么这很重要

When it works poorly, triglyceride-rich particles linger in the blood and turn into the remnants that lodge in artery walls. Several proteins your body makes, including ApoC-III and ANGPTL3, exist to throttle it.

心血管保护的遗传架构

Lipoprotein-Associated Phospholipase A2 (Lp-PLA2)

定义

Lipoprotein-associated phospholipase A2 is an enzyme carried on LDL particles that generates pro-inflammatory lipid mediators within atherosclerotic plaques; elevated circulating levels are associated with plaque vulnerability and increased risk of plaque rupture, independent of standard cholesterol measurements.

为什么这很重要

It adds information about plaque instability that ordinary cholesterol tests cannot provide, helping identify people at risk of a sudden heart attack.

医生没有为你开具的心脏检查

脂蛋白(a)

定义

Lipoprotein(a), written Lp(a) and said "L-P-little-a," is an LDL-like particle with an extra sticky protein attached.

为什么这很重要

Your level is set almost entirely by genetics — diet and exercise barely budge it. A high level raises the risk of heart attack, stroke, and narrowed aortic valves. Every adult should have it checked at least once, since one test answers the question for life.

基因好能战胜血脂差吗?

Lipoprotein(a) — Lp(a)

定义

Lipoprotein(a), abbreviated Lp(a), is a genetically determined lipoprotein particle consisting of an LDL-like core with an additional protein called apolipoprotein(a) covalently attached, which makes the particle particularly pro-atherogenic and pro-thrombotic. It is present at elevated levels in roughly one in five people worldwide and is not captured by standard cholesterol panels; a single ded…

为什么这很重要

Elevated Lp(a) is an independent, inherited risk factor that standard lipid tests miss entirely, so knowing your level can reveal hidden cardiovascular risk.

从子宫到逆转:消除一生的动脉损伤

肝X受体

定义

The Liver X Receptor (LXR) is a nuclear receptor activated by oxysterols — oxidised derivatives of cholesterol — that induces expression of cholesterol exporters such as ABCA1 and ABCG1, promoting the removal of excess intracellular cholesterol toward HDL-mediated reverse cholesterol transport.

为什么这很重要

It is part of the cell's safety valve against cholesterol overload, helping explain how the body actively manages — rather than simply accumulates — cholesterol.

胆固醇:它有什么用?

LoDoCo2 Trial

定义

LoDoCo2 was a randomized trial of low-dose colchicine (0.5 mg daily) in patients with stable coronary artery disease that found a 31% reduction in major adverse cardiovascular events compared with placebo, extending the anti-inflammatory benefit of colchicine beyond the acute post-heart-attack period.

为什么这很重要

It reinforces that chronic, low-grade inflammation in stable coronary disease is a treatable risk factor separate from cholesterol.

健美、迅捷且险些丧命:世界级自行车手如何发现隐匿性心脏病

Loeys-Dietz Syndrome

定义

Loeys-Dietz syndrome is a heritable connective-tissue disorder caused by mutations in TGF-β receptors or their downstream effectors (SMAD2, SMAD3), producing paradoxical overactivation of TGF-β signaling that drives disorganized fibrosis and progressive structural failure of the aortic root, often at early ages.

为什么这很重要

Like Marfan syndrome, Loeys-Dietz syndrome markedly raises the risk of aortic dissection in young active individuals and requires tailored athletic restriction.

运动员的主动脉:健康的心脏还是隐蔽的定时炸弹?

Log-Linear Relationship

定义

A log-linear relationship between LDL-C and cardiovascular risk means that each successive equal reduction in LDL-C produces a proportionally consistent percentage reduction in heart events, with no threshold below which further lowering stops being beneficial—supporting the 'lower is better' principle.

为什么这很重要

This relationship is the clinical basis for aggressive LDL-lowering targets in high-risk patients.

Read: The Big Cholesterol Lie, Part 2

洛米塔皮德

定义

Lomitapide is an oral drug that inhibits microsomal triglyceride transfer protein (MTTP) inside liver cells, blocking the assembly and secretion of VLDL and LDL particles at the source; because it works upstream of the LDL receptor, it can lower circulating LDL-C in HoFH patients even when the receptor is completely non-functional.

为什么这很重要

Lomitapide represents a receptor-independent strategy that finally gave HoFH patients a way to reduce cholesterol when statins and other receptor-dependent drugs failed.

Read: Children With 60-Year-Old Arteries: The Extreme Reality of HoFH

Long QT Syndrome

定义

Long QT syndrome is an inherited or acquired channelopathy characterized by abnormal prolongation of the heart's electrical recovery phase — the QT interval on an ECG — that predisposes to a specific form of ventricular tachycardia called torsades de pointes and sudden death; female sex is a risk factor for events after puberty.

为什么这很重要

It is one of the most common inherited arrhythmia syndromes detectable by ECG, and identifying it in a young athlete can be life-saving.

如何避免英年早逝

Longevity Markers

定义

Physiological or biochemical measurements — such as VO₂ max, inflammatory biomarkers, and plaque burden — that are associated with longer healthy lifespan and are tracked to gauge whether lifestyle or therapeutic interventions are having a favourable effect.

为什么这很重要

Knowing which measurable signals predict long-term survival helps readers focus on the outcomes that matter most.

阅读:《重新思考心脏健康:彼得·梅格达尔如何将一纸诊断转化为推动变革的使命》

Longitudinal Disease Monitoring

定义

A care model in which a patient's atherosclerotic disease is tracked through serial quantitative imaging over months or years, allowing clinicians to detect progression, regression, or plaque stabilization in response to therapy rather than relying on a single snapshot evaluation.

为什么这很重要

The article contrasts this approach with traditional episodic care and presents it as the clinical future enabled by AI-QCT.

Read: The Future of Heart Disease Management

纵向研究

定义

A research design that follows the same individuals over an extended period to observe how exposures or traits at one time point relate to outcomes—such as mortality—years or decades later.

为什么这很重要

The article relies on longitudinal data to show that improving fitness over time, not just having a high baseline value, reduces mortality.

Read: VO₂ max: the determinant of Health and Longevity?

Loss-of-Function (LOF) Mutation

定义

A loss-of-function mutation is a genetic variant that reduces or eliminates the activity of a protein; in the context of this article, PCSK9 loss-of-function homozygotes have plasma total cholesterol as low as 80 mg/dL yet survive normally, providing human evidence that very low circulating cholesterol is physiologically tolerable.

为什么这很重要

These rare individuals demonstrate that the body's true circulating cholesterol requirement is far below average population levels.

您的细胞会自行合成胆固醇——那为什么您的血液里到处都是它?

Loss-of-Function (LOF) Variant — PCSK9

定义

A PCSK9 loss-of-function variant is a naturally occurring DNA mutation that reduces or eliminates the activity of PCSK9, a protein that normally degrades LDL receptors on liver cells; with less PCSK9, more receptors remain on the cell surface to clear LDL from the bloodstream, producing lifelong ultra-low LDL-C. In large cohort studies, PCSK9 LOF carriers show dramatically lower rates of coronary…

为什么这很重要

It is one of the clearest genetic proofs that humans can live healthily with very low LDL from birth, informing the design of PCSK9-inhibitor drugs.

心脏病是一种选择吗?阻止斑块形成的‘零风险’秘诀

Loss-of-Function Allele

定义

A loss-of-function allele is a DNA variant that partially or completely abolishes the normal activity of the protein encoded by that gene; in cardiovascular genetics, individuals born with loss-of-function alleles in genes such as PCSK9 or APOC3 naturally have lower levels of atherogenic lipoproteins throughout life, providing decades-long evidence about the safety and efficacy of blocking those…

为什么这很重要

These natural 'off-switches' in human DNA are the strongest evidence we have that targeting a specific protein will lower heart disease risk.

心血管保护的遗传架构

Loss-of-Function Variants — PCSK9

定义

Loss-of-function variants in PCSK9 are inherited mutations that reduce or abolish the protein's ability to degrade hepatic LDL receptors, allowing those receptors to continue clearing LDL from the bloodstream, thereby lowering LDL-C and coronary heart disease risk from birth.

为什么这很重要

These variants demonstrate that decades of lower LDL exposure — not just acute treatment — produces disproportionately large reductions in heart disease risk, reinforcing the importance of cumulative ApoB exposure over a lifetime.

基因好能战胜血脂差吗?

Low-Attenuation Plaque

定义

Low-attenuation plaque is the very darkest, fattiest plaque on a CT scan — soft enough that X-rays pass through it easily.

为什么这很重要

Of everything a scan can measure, the amount of this material has turned out to be among the strongest predictors of a future heart attack, outperforming both calcium score and percentage narrowing.

健美、迅捷且险些丧命:世界级自行车手如何发现隐匿性心脏病

Low-Carbohydrate Diet Mortality Risk

定义

An epidemiological finding from a large Lancet Public Health meta-analysis (Seidelmann et al., 2018) showing that both very low (70%) carbohydrate intakes were associated with increased mortality, with the highest risk when carbohydrates were replaced by animal-derived protein and fat rather than plant-based sources.

为什么这很重要

This U-shaped relationship challenges the assumption that carbohydrate restriction is unconditionally beneficial for long-term survival.

营养学大辩论:原始人饮食法/生酮饮食/旧石器饮食与全食物植物性饮食对长寿和心脏病影响的循证现实

Low-Density Non-Calcified Plaque

定义

A type of coronary plaque with low X-ray attenuation on CT, corresponding to a lipid-rich, soft core that is not yet calcified; this morphology is associated with a higher risk of rupture and acute coronary syndromes than either fibrous or calcified plaque.

为什么这很重要

The article explains that most heart attacks arise from exactly this type of lesion, which standard calcium scoring cannot detect.

Read: The Future of Heart Disease Management

Low-Fat Whole Food Plant-Based Diet

定义

A low-fat whole food plant-based diet excludes all animal products (meat, dairy, eggs) and added oils, deriving calories almost entirely from minimally processed grains, legumes, vegetables, and fruits. It is the dietary pattern associated with the work of Caldwell Esselstyn and Dean Ornish, both of whom published clinical data suggesting it can arrest or reverse coronary artery disease.

为什么这很重要

This is the specific dietary intervention at the core of the article, and readers need to understand what it entails to evaluate the evidence behind it.

Read: Peter Megdal of curingheartdisease.com Interview

LPA Gene

定义

LPA is the gene that determines how much lipoprotein(a) you make. Your version is fixed at conception.

为什么这很重要

This is why Lp(a) barely responds to diet or exercise, and why a single measurement is usually enough for life. Variation in this one gene explains most of the difference between people.

心血管保护的遗传架构

流明佯谬

定义

The observation that measurable plaque regression—confirmed by reductions in atheroma volume on IVUS or CCTA—is often not accompanied by a corresponding increase in luminal diameter, because the outer arterial wall simultaneously contracts (reverse remodeling) back toward its pre-disease size.

为什么这很重要

Understanding it prevents patients and clinicians from mistaking a stable or slightly narrower lumen on imaging for treatment failure when the artery is actually healing.

冠状动脉斑块消退、管腔悖论与运动员的血管重塑:整合药物与全食物植物性策略

里昂饮食心脏研究

定义

The Lyon Diet Heart Study was a randomized trial that tested a Mediterranean-style diet against a prudent Western diet in patients who had already had a heart attack; it reported a large reduction in recurrent cardiac events despite essentially no difference in blood cholesterol between the two groups, making it a key reference for the idea that dietary benefit is not fully explained by lipid cha…

为什么这很重要

Its striking cholesterol-independent result is central to any discussion of how diet protects the heart beyond simply lowering LDL.

Read: What’s more important, diet vs drugs, or outcome vs regression?

Lysosomal Degradation (of LDL Receptors)

定义

The cellular process by which PCSK9, after binding the LDL receptor, routes the receptor to lysosomes where it is broken down rather than recycled back to the cell surface; PCSK9 inhibitors block this process, preserving receptor density and enhancing LDL clearance.

为什么这很重要

Understanding this recycling mechanism explains why blocking PCSK9 has such a potent LDL-lowering effect.

Read: Cholesterol: How Low is Too Low?

返回顶部

M

M2 Phenotype Macrophage

定义

A reparative, anti-inflammatory subtype of macrophage that predominates during plaque regression; these cells promote cholesterol efflux, secrete anti-inflammatory cytokines, and assist in extracellular matrix reconstruction, in contrast to the pro-inflammatory M1 phenotype that drives early atherogenesis.

为什么这很重要

Knowing that the body has its own cellular repair crew—and what it needs to activate—explains why aggressive lipid lowering can translate into genuine arterial healing.

冠状动脉斑块消退、管腔悖论与运动员的血管重塑:整合药物与全食物植物性策略

MACE-4

定义

MACE-4 (Major Adverse Cardiovascular Events, 4-component) is a composite clinical endpoint comprising cardiovascular death, non-fatal myocardial infarction, non-fatal stroke, and coronary revascularization, used as the primary endpoint in the CLEAR Outcomes trial.

为什么这很重要

It is the benchmark measure by which bempedoic acid's benefit was quantified in the key outcomes trial described in the article.

雌激素能保护女性动脉免受斑块形成吗?

Macrocalcification

定义

Large, macroscopic deposits of calcium within atherosclerotic plaque that are visible on standard non-contrast CT imaging; macrocalcification generally reflects plaque stabilization and healing rather than active instability.

为什么这很重要

Knowing the distinction between macro- and microcalcification clarifies why a zero CAC score does not guarantee the absence of dangerous plaque.

零的力量:没有钙 – 没有风险?

Macrophage Cholesterol Efflux Capacity (CEC)

定义

A functional measure of HDL's ability to accept cholesterol from macrophage foam cells in the arterial wall for transport back to the liver; it correlates with cardiovascular protection independently of HDL-C levels, suggesting that HDL function matters more than HDL quantity.

为什么这很重要

Explains why a diet that raises HDL-C numbers (like one high in coconut oil) does not necessarily improve the protective work HDL actually does.

椰子油作为健康食品的神话:行业如何左右你的饮食!

Macrophage Polarization

定义

The process by which macrophages shift between pro-inflammatory (M1) and anti-inflammatory (M2) functional states; exercise promotes polarization toward the anti-inflammatory phenotype within atherosclerotic plaques, helping to stabilize rather than inflame plaque tissue.

为什么这很重要

It links the molecular biology of immune cells to the practical finding that exercise can make existing plaque less likely to rupture and cause a heart attack.

你的心脏比你更老吗?逆转心血管年龄的科学

主要不良心血管事件

定义

A major adverse cardiovascular event, or MACE, is a bundle of bad outcomes counted together in a study — typically cardiovascular death, heart attack, and stroke.

为什么这很重要

Watch this one closely when reading trials. Different studies bundle different things, and a headline improvement can sometimes be driven almost entirely by one minor component rather than by fewer deaths.

每日阿司匹林究竟是在夺走你的生命还是在拯救你?最新科学研究怎么说。.

MARC-2 Study

定义

MARC-2 (Male Athlete's Risk of Cardiovascular disease) is a clinical study that examined the relationship between vigorous exercise habits and coronary plaque burden in male athletes, finding an association between high-intensity training and greater calcified plaque.

为什么这很重要

It is one of the key imaging studies cited in the article as evidence linking extreme exercise to higher coronary plaque burden.

Read: Do endurance sports help or hurt arteries?

马凡综合征

定义

Marfan syndrome is a heritable connective-tissue disorder caused by mutations in the FBN1 gene encoding fibrillin-1, which disrupts the medial scaffolding of the aorta and predisposes affected individuals to progressive thoracic aortic dilation, dissection, and rupture — often at young ages and modest aortic diameters.

为什么这很重要

Marfan syndrome is one of the most important genetic causes of sudden cardiac death in young athletes and requires specific sport-restriction guidance.

运动员的主动脉:健康的心脏还是隐蔽的定时炸弹?

MARINE Trial

定义

A randomized trial that established the efficacy of icosapent ethyl for lowering triglycerides in patients with very high triglyceride levels, providing the foundational evidence for its approval in severe hypertriglyceridemia.

为什么这很重要

MARINE underpins one of Vascepa's two approved indications and helps contextualize its triglyceride-lowering effects separately from its cardiovascular event-reduction effects.

Read: Heart Disease and Fish Oil

Mass-Balance Modeling

定义

Mass-balance modeling is a quantitative approach that tracks the total input, output, and storage of a substance—here cholesterol—across the body's compartments to estimate how much is actually needed versus how much is present in excess.

为什么这很重要

It reveals that circulating cholesterol levels in most adults are two to four times higher than what physiology requires, which helps explain why lowering LDL reduces cardiovascular risk without depriving tissues.

您的细胞会自行合成胆固醇——那为什么您的血液里到处都是它?

Master@Heart 研究

定义

The Master@Heart study is a controlled study of lifelong male endurance athletes that found they carried more total coronary plaque than healthy, active non-athletes—including more calcified and non-calcified plaque in proximal artery segments—raising questions about whether extreme lifelong endurance training promotes atherosclerosis even in the absence of traditional risk factors.

为什么这很重要

It underpins the 'athlete paradox' and cautions against assuming high fitness automatically means clean arteries.

Read: What is the difference between Mediterranean and whole-food plant-based diets for heart disease?

Masters 60+ Category (Age-Graded Record)

定义

An officially recognised competitive classification for cyclists aged 60 and above, with separately ratified national and world records that allow age-matched comparison of performance and reflect the cardiovascular capabilities of older athletes.

为什么这很重要

Age-stratified performance data are valuable for understanding cardiovascular aging and the benefits of sustained endurance training later in life.

阅读:彼得·梅格达尔 2022 年一小时纪录挑战

大师级运动员

定义

A masters athlete is a competitor over about 35 who trains and races seriously, often for decades.

为什么这很重要

This group challenges standard assumptions. They have exceptional fitness alongside sometimes surprising coronary calcium, altered protein needs, and a raised risk of atrial fibrillation — so ordinary advice can fit them badly.

巅峰体能与隐形钙化:运动员的斑块积聚悖论

成年运动员

定义

Competitive or highly trained endurance athletes typically defined as individuals over the age of 35 who have engaged in years of high-intensity or high-volume training; they are the primary population studied in the athlete paradox research because their long exercise histories can paradoxically be associated with elevated coronary calcium scores.

为什么这很重要

This group challenges the assumption that more exercise always means a cleaner bill of cardiovascular health.

Read: Coronary Calcium and Athletic Risk

Masters Category (Cycling)

定义

Age-based competitive divisions in cycling—typically in five-year bands—that allow older athletes to compete for records and titles against peers of similar age rather than against open-category professionals.

为什么这很重要

Megdal's record is specific to the men's 60–64 masters category, a distinct classification from the open pro Hour Record.

彼得·梅格达尔 (Peter Megdal) 登上《戴德姆时报》

Matrix Gla-Protein (MGP)

定义

Matrix Gla-protein is a vitamin K–dependent protein secreted by vascular smooth muscle cells that acts as a physiological inhibitor of arterial calcification; it requires carboxylation by vitamin K2 to be active.

为什么这很重要

It connects the proposed vitamin K2 hypothesis to the observation that statins may accelerate calcium densification in plaques.

雌激素能保护女性动脉免受斑块形成吗?

Matrix Metalloproteinases (MMPs)

定义

Matrix metalloproteinases are enzyme proteins — notably MMP-2 and MMP-9 — that cleave structural proteins such as elastin and collagen; in abdominal aortic aneurysm, MMP activity can exceed normal aortic tissue levels by more than tenfold, permanently dismantling the wall's scaffold because adult elastin cannot be regenerated.

为什么这很重要

These molecular 'scissors' are the primary engine of AAA destruction, which is why controlling the inflammation that activates them is a central treatment target.

运动员的主动脉:健康的心脏还是隐蔽的定时炸弹?

Maximal Lactate Steady State (MLSS)

定义

The highest exercise intensity at which blood lactate production and clearance remain in equilibrium, representing the upper boundary of sustainable aerobic effort; in elite endurance athletes it typically occurs at 80–90% of VO₂max.

为什么这很重要

Understanding MLSS explains why hour-record pacing is so demanding—riders must hold the edge of what the body can sustain without lactate accumulating to fatigue-inducing levels.

精英老将自行车手的生理优化与寿命表现建模

Mechanotransduction

定义

Mechanotransduction is the biological process by which cells convert mechanical stimuli—such as stretch, pressure, or shear stress—into biochemical signals that alter cell behavior and gene expression.

为什么这很重要

The article invokes mechanotransduction to explain how exercise-induced pressure surges may upregulate proteoglycan synthesis in the arterial wall, increasing the likelihood that ApoB particles become trapped.

Read: Do endurance sports help or hurt arteries?

Medical Cardiologist

定义

A medical cardiologist (also called a non-interventional or clinical cardiologist) manages cardiovascular disease primarily through diagnosis, risk factor modification, and pharmacological therapy rather than catheter-based or surgical procedures. In the article, both a medical cardiologist and an interventional cardiologist were present during the angiogram, illustrating the distinct roles each…

为什么这很重要

Patients often see multiple cardiologists with different scopes of practice, and understanding the distinction helps them ask the right questions.

Read: Peter Megdal of curingheartdisease.com Interview

地中海饮食

定义

The Mediterranean diet emphasizes vegetables, fruit, beans, whole grains, nuts, and olive oil, with fish and little red meat.

为什么这很重要

It has strong evidence for reducing heart attacks and strokes. What it has not clearly shown is the ability to shrink existing coronary plaque — a different and higher bar that only a few very intensive diets have been tested against.

阅读:已被证实唯一能消除动脉斑块的饮食(不是地中海饮食!)

Medium-Chain Triglycerides (MCTs)

定义

Triglycerides composed of fatty acids with 6–12 carbon chains (most clinically relevant preparations focus on C8:0 caprylic and C10:0 capric acids), which are absorbed more rapidly than long-chain fats, preferentially enter portal circulation, and undergo hepatic beta-oxidation; commercial MCT oils are distinct from coconut oil, which is dominated by the borderline C12:0 lauric acid rather than C…

为什么这很重要

The MCT claim is the main scientific-sounding reason consumers choose coconut oil, so knowing what MCTs actually are clarifies whether that claim holds up.

椰子油作为健康食品的神话:行业如何左右你的饮食!

Medroxyprogesterone Acetate (MPA)

定义

Medroxyprogesterone acetate is a synthetic progestin used in the original Women's Health Initiative trial combined with conjugated equine estrogens; its androgenic properties can blunt estrogen's beneficial effects on blood vessels and lipids, and it is associated with worse cardiovascular outcomes than natural progesterone.

为什么这很重要

Much of the cardiovascular harm attributed to hormone therapy in older studies may have been driven by MPA rather than estrogen itself.

Read: Does The New Estrogen Patch Prevent Heart Disease? The Complex Truth Explained

孟德尔随机化

定义

Mendelian randomization is a clever research method that uses the genes people were born with as a natural experiment.

为什么这很重要

Because genes are shuffled randomly at conception, comparing people who inherited naturally low cholesterol with those who didn't sidesteps the usual confusion about lifestyle. It is a major reason we are confident cholesterol particles cause heart disease rather than just accompanying it.

心血管保护的遗传架构

MET (Metabolic Equivalent of Task)

定义

A unit expressing the energy cost of physical activity relative to sitting rest; one MET equals roughly 3.5 mL of oxygen consumed per kilogram of body weight per minute, making it a convenient way to quantify and compare fitness levels.

为什么这很重要

The article uses MET increments to quantify how much each unit of fitness improvement reduces mortality risk.

Read: VO₂ max: the determinant of Health and Longevity?

MET-Hours (Metabolic Equivalent of Task-Hours)

定义

A MET is a unit that expresses the energy cost of a physical activity relative to sitting at rest; MET-hours per week combine intensity and duration into a single dose metric. The article uses ≥15 MET-hours/week as the aerobic activity threshold roughly equivalent to 150 minutes/week of moderate-to-vigorous exercise.

为什么这很重要

The article uses MET-hours to define who met the aerobic activity target in the 'triple threat' analysis.

Read: Can pumping iron help your pumping heart?

Meta-Organismal Relay

定义

The meta-organismal relay describes the biochemical hand-off in which dietary compounds are first transformed by gut microbiota into intermediate metabolites and then further modified by host organs — such as the liver — to produce molecules with systemic physiological effects; TMAO production is the canonical example of this process.

为什么这很重要

It reframes heart disease risk as a collaboration between your own cells and your gut bacteria, not just your genes.

牛排中的隐形毒素:肠道细菌如何引发心脏病

Metabolic Endotoxemia

定义

Metabolic endotoxemia is a state of chronically elevated circulating lipopolysaccharide (LPS) — a bacterial cell-wall component — arising from increased intestinal permeability and altered gut microbiota, which contributes to low-grade systemic inflammation and insulin resistance.

为什么这很重要

It connects gut health to cardiovascular and metabolic disease, showing that inflammation can originate in the intestine and travel to the heart.

阅读:为什么腹部脂肪比你想象的更危险

Metabolic Equivalent of Task (MET)

定义

A metabolic equivalent of task is a unit expressing the energy cost of a physical activity relative to sitting quietly (1 MET ≈ 3.5 mL O₂/kg/min). Exercise intensity is commonly classified as vigorous (6–9 METs) or very vigorous (≥9 METs), and in the MARC-2 study these thresholds were used to distinguish exercise intensities that slow plaque progression from those associated with accelerated calc…

为什么这很重要

The MET threshold of 9 helps explain why pushing too hard may promote more plaque buildup even in fit athletes.

Read: Exercise Doesn’t Erase Arterial Plaque – It Turns It to Stone!

代谢综合征

定义

Metabolic syndrome is a cluster of five problems that tend to travel together: a large waist, high triglycerides, low HDL, high blood pressure, and high blood sugar. Having three or more counts.

为什么这很重要

It usually points to insulin resistance underneath. It is a useful warning flag, but each piece still needs to be measured and treated in its own right.

阅读:为什么腹部脂肪比你想象的更危险

Metabolically Neutral

定义

Metabolically neutral describes a drug or compound that does not meaningfully alter blood pressure, lipid levels, insulin sensitivity, or other metabolic parameters; micronized progesterone is described this way because, unlike synthetic progestins, it does not worsen cholesterol or raise blood pressure.

为什么这很重要

A metabolically neutral progestogen allows estrogen's cardiovascular benefits to work without being counteracted.

Read: Does The New Estrogen Patch Prevent Heart Disease? The Complex Truth Explained

代谢性炎症

定义

A chronic, low-grade inflammatory state driven by excess nutrients—particularly saturated fat—that activates innate immune receptors such as TLR4, producing sustained cytokine signaling in the absence of infection; distinct from classical acute inflammation.

为什么这很重要

It names the specific type of inflammation that connects a high-fat diet to ongoing arterial damage and plaque destabilization.

Read: Pathophysiological Determinants of Atherosclerotic Regression: The Criticality of Ultra-Low-Fat Whole-Food Plant-Based Nutritional Protocols

蛋氨酸

定义

Methionine is an essential amino acid found at high concentrations in animal proteins such as whey; many cancer cells are 'methionine dependent,' meaning they preferentially use methionine to fuel their growth. The article uses this dependency—sometimes called the Hoffman Effect—to argue that plant proteins, which are lower in methionine, may carry a lower oncological risk for older athletes.

为什么这很重要

It is the specific reason the article recommends considering plant proteins alongside or instead of whey for cancer-risk management in older athletes.

是什么在65岁前夺走你的生命,却可能在65岁后拯救你——蛋白质的悖论

Methionine Synthase

定义

The enzyme that catalyzes the remethylation of homocysteine to methionine, using 5-methyltetrahydrofolate as the methyl donor and methylcobalamin (active vitamin B-12) as a cofactor; impaired activity — due to B-12 deficiency — causes homocysteine to accumulate.

为什么这很重要

It links B-12 deficiency directly to rising homocysteine levels, helping explain why B-12 status is one of the first things to check when the level is high.

补充L-甲基叶 folate + 活性B族维生素降低同型半胱氨酸能否帮助预防动脉粥样硬化并减少斑块?

Methylcobalamin

定义

The active coenzyme form of vitamin B-12 that functions as a cofactor for methionine synthase, enabling the remethylation of homocysteine to methionine; it is the form directly used in this pathway, as opposed to cyanocobalamin, which must first be converted.

为什么这很重要

Knowing this helps evaluate claims that 'active' B-12 forms are superior to standard supplements for lowering homocysteine.

补充L-甲基叶 folate + 活性B族维生素降低同型半胱氨酸能否帮助预防动脉粥样硬化并减少斑块?

Mevalonate Pathway

定义

The mevalonate pathway is the multi-step biochemical route by which cells, primarily in the liver, synthesize cholesterol and related molecules; statins and bempedoic acid act at two separate nodes of this pathway to reduce cholesterol production.

为什么这很重要

Knowing that multiple drugs can interrupt this pathway at different points explains why combination therapy can lower LDL more than doubling up on one drug.

我应该服用降胆固醇药吗?当然应该。.

Microcalcification

定义

Microscopic calcium deposits within atherosclerotic plaque that fall below the resolution threshold of conventional CT; unlike dense macrocalcification, microcalcifications can generate mechanical stress within the fibrous cap and increase plaque rupture susceptibility.

为什么这很重要

Microcalcification explains how a patient can have a zero CAC score yet still harbor rupture-prone plaque.

零的力量:没有钙 – 没有风险?

微粉化孕酮

定义

Micronized progesterone is a bioidentical form of natural progesterone processed into fine particles for better absorption; unlike synthetic progestins such as MPA, it does not raise blood pressure, worsen cholesterol, or blunt estrogen's favorable cardiovascular effects.

为什么这很重要

Choosing this form of progesterone over older synthetic versions may avoid much of the cardiovascular harm seen in the original WHI trial.

Read: Does The New Estrogen Patch Prevent Heart Disease? The Complex Truth Explained

Microplastics

定义

Tiny plastic particles — generally under 5 millimeters — released from food packaging, textiles, household plastics, and industrial waste; they are now detected in human food, drinking water, air, and body tissues, including inside arterial plaques.

为什么这很重要

Understanding what microplastics are is essential context for evaluating their potential role in heart disease.

问答:日常微塑料是否在助长心脏病?

微血管功能障碍

定义

Microvascular dysfunction is disease in the smallest blood vessels of the heart, too small to see on any angiogram.

为什么这很重要

A person can have genuine chest pain and real oxygen shortage while being told their arteries are clean. It is more common in women and in people with diabetes, and it needs different testing to find.

体质好如何掩盖心脏病发作

老兵百万计划

定义

The Million Veteran Program is a large US biobank and genomic research initiative drawing on veterans' health data; genetic analyses from this cohort have been used to identify causal relationships between ApoB-raising gene variants and conditions such as peripheral artery disease.

为什么这很重要

Its massive scale gives genetic findings unusual statistical power, strengthening the causal case linking ApoB to diseases beyond the heart.

为什么载脂蛋白B(ApoB)很重要?

MIND Diet

定义

The MIND diet (Mediterranean-DASH Intervention for Neurodegenerative Delay) is a dietary pattern combining elements of the Mediterranean and DASH diets, emphasizing vegetables, berries, nuts, beans, fish, and whole grains, specifically designed and studied for its potential to slow cognitive decline.

为什么这很重要

Along with the Mediterranean diet, the MIND diet has the strongest evidence for protecting brain health, fitting the article's argument that arterial-friendly eating in midlife protects cognitive function later.

阿尔茨海默病其实始于你的动脉吗?

Mindfulness-Based Stress Reduction (MBSR)

定义

Mindfulness-based stress reduction is a structured 8-week program that teaches meditation, body-awareness, and yoga as tools for managing stress, originally developed by Jon Kabat-Zinn. It is one of the specific meditation techniques evaluated in the clinical trials the article reviews.

为什么这很重要

MBSR is the form of meditation with the largest body of trial evidence, so understanding what it is helps you evaluate whether a study's findings apply to the type of meditation you might practice.

Read: Does stress kill you and does meditation save you?

Mineral Oil Placebo

定义

The inert-appearing substance used in the placebo arm of REDUCE-IT; its use has been contested because the placebo group experienced modest increases in LDL-C and hs-CRP, raising the possibility that mineral oil was not fully biologically inert and may have modestly inflated the apparent benefit of icosapent ethyl.

为什么这很重要

This controversy is central to evaluating how much of REDUCE-IT's striking results reflect a true drug effect versus a compromised control arm.

Read: Heart Disease and Fish Oil

最小管腔直径

定义

Minimal lumen diameter is the narrowest point inside a coronary artery as measured by quantitative coronary angiography; it is used in serial imaging trials as an indicator of whether disease is progressing or regressing, though it reflects only the open channel and not the plaque hidden within the artery wall.

为什么这很重要

It was the key measurement in early diet-and-angiography trials like the Lifestyle Heart Trial, and its limitations explain why those studies can be misleading.

Read: What’s more important, diet vs drugs, or outcome vs regression?

Misregistration Artifact

定义

A blurring or step-like distortion in a CT image that arises when the heart is scanned across multiple heartbeats and the acquired slices do not align perfectly, degrading image quality and potentially obscuring or mimicking plaque.

为什么这很重要

Wide-detector scanners that capture the whole heart in one heartbeat are promoted partly because they eliminate this artifact, a claim the article asks readers to evaluate critically.

一种无需手术透视心脏的新方法——预测心脏病发作的最佳途径

Missense Variant

定义

A missense variant is a single nucleotide change in a gene that causes one amino acid to be substituted for another in the resulting protein, potentially altering its function; in cardioprotective genetics, function-reducing missense variants—such as those in PCSK9—can lower atherogenic lipoprotein levels from birth without fully abolishing the protein.

为什么这很重要

Many of the natural genetic protections against heart disease are missense variants that quietly reduce, rather than eliminate, a harmful protein throughout life.

心血管保护的遗传架构

Mitochondrial Biogenesis

定义

Mitochondrial biogenesis is the cellular process by which new mitochondria—the organelles that generate energy—are created inside muscle and heart cells; it is stimulated primarily by aerobic exercise and cannot be replicated by any currently available medication.

为什么这很重要

Understanding this helps explain why 'normal' blood work does not mean a healthy, high-functioning heart and body.

现代医学能拯救一个久坐不动的人吗?持续40年的三胞胎实验

Mitochondrial Density

定义

The concentration of mitochondria within muscle fibers, which determines the cell's capacity for aerobic energy production; endurance training is associated with preserving mitochondrial density in older athletes.

为什么这很重要

Higher mitochondrial density means muscles can generate more energy aerobically, delaying fatigue during prolonged efforts like the hour record.

精英老将自行车手的生理优化与寿命表现建模

线粒体自噬

定义

Mitophagy is the cellular process by which damaged or dysfunctional mitochondria are selectively identified and broken down, serving as a quality-control mechanism; impaired mitophagy has been proposed as a contributor to vascular aging, though the evidence in humans remains largely preclinical.

为什么这很重要

Mitophagy is increasingly discussed in longevity and cardiovascular research, but it is important to know that its relevance to human heart disease has not yet been established in clinical trials.

Read: Heart disease accelerates as you age

Mixed-Morphology Plaque

定义

Mixed-morphology plaque is coronary plaque that contains both calcified and non-calcified (soft) components; it is generally considered more dangerous than purely calcified plaque because the soft, lipid-rich portions are more prone to rupturing and triggering a heart attack.

为什么这很重要

The distinction between stable calcified plaque and dangerous mixed-morphology plaque is the key to understanding why athlete 'rust' is often less deadly than the rust seen in sedentary people.

巅峰体能与隐形钙化:运动员的斑块积聚悖论

mmol/L·年

定义

mmol/L-years is a unit expressing cumulative cholesterol exposure, calculated by multiplying a person's average LDL-C concentration (in mmol/L) by the number of years they have been exposed to that level. It converts a single snapshot measurement into a running total of arterial damage, allowing clinicians to estimate when an individual will cross the threshold for clinical atherosclerotic diseas…

为什么这很重要

This metric shows why a child with extreme cholesterol can accumulate decades of arterial damage in just a few years.

Read: Children With 60-Year-Old Arteries: The Extreme Reality of HoFH

Modelflow Aortic Age Algorithm

定义

A method developed by Dr. Benjamin Levine's laboratory that uses the central aortic pressure waveform and stroke volume to calculate the structural compliance of the aorta, translating the result into a biological vascular age independent of transient blood pressure fluctuations.

为什么这很重要

It gives a concrete biological age for your arteries, making abstract cardiovascular risk tangible and actionable.

你的心脏比你更老吗?逆转心血管年龄的科学

Molecular Autopsy

定义

Molecular autopsy is the genetic analysis of post-mortem tissue to identify inherited ion-channel or structural gene variants that could explain a sudden death when conventional pathological examination finds no anatomical cause; it identifies an inherited arrhythmia syndrome in a meaningful minority of autopsy-negative cases.

为什么这很重要

A molecular autopsy result can explain an unexplained death and reveal which living relatives need cardiac evaluation.

如何避免英年早逝

Monacolin K

定义

The active cholesterol-lowering compound in red yeast rice; it is chemically identical to lovastatin and inhibits HMG-CoA reductase, the same enzyme targeted by prescription statin drugs.

为什么这很重要

The presence of monacolin K explains both why red yeast rice can lower LDL and why its quality control matters—potency varies widely between brands.

纳豆激酶与心血管斑块:人体研究的真实情况

Monounsaturated Fatty Acids (MUFAs)

定义

Monounsaturated fatty acids are fats with a single carbon-carbon double bond; oleic acid, the principal fat in olive oil, is the most common dietary MUFA, and it is often cited as the reason olive oil is considered heart-healthy.

为什么这很重要

Knowing what MUFAs are clarifies why Mendelian randomization—finding no causal cardiac benefit—is a direct challenge to olive oil's health claims.

Read: Is Olive Oil Actually Healthy?

Morphometric Analysis

定义

Morphometric analysis is a quantitative measurement technique applied to tissue cross-sections to calculate the size and area of structures such as arterial lumen, plaque, and vessel wall, allowing researchers to objectively compare the degree of narrowing or regression across experimental groups.

为什么这很重要

This is the method that produced the headline finding—an 80% larger coronary channel after cholesterol lowering—so knowing what it means helps readers weigh the evidence.

Read: Can heart disease be reversed?

MTHFR C677T

定义

A common genetic variant in the MTHFR gene that reduces the activity of the enzyme methylenetetrahydrofolate reductase, modestly raising homocysteine levels — particularly when dietary folate is low; homozygosity (carrying two copies) produces a larger effect than a single copy.

为什么这很重要

Supplement marketing often targets people with this variant, but the article notes that genetically elevated homocysteine in this range has not been shown to raise coronary risk independently.

补充L-甲基叶 folate + 活性B族维生素降低同型半胱氨酸能否帮助预防动脉粥样硬化并减少斑块?

mTOR (Mechanistic Target of Rapamycin)

定义

A conserved intracellular kinase that acts as a master switch integrating nutrient availability, growth factors, and energy status to coordinate cell growth, protein synthesis, and autophagy; mTORC1, its nutrient-sensitive complex, is implicated in aging biology because chronic hyperactivation promotes growth signaling while suppressing the cellular cleanup processes needed to remove damaged prot…

为什么这很重要

Understanding mTOR explains why the same high-protein diet that builds muscle in a 35-year-old may be less desirable in a healthy 50-year-old, and why timing and amount of protein intake matter for longevity.

Read: Stop Wasting Away as You Age…the Emerging Science of Antiaging!

mTORC1 (Mechanistic Target of Rapamycin Complex 1)

定义

mTORC1 is a protein complex inside cells that acts as a master switch for muscle protein synthesis; when activated by amino acids, exercise, or hormones, it promotes tissue growth, and when suppressed, the body shifts toward breakdown and maintenance. In aging muscle, its sensitivity to normal dietary signals is blunted, which is the molecular basis of anabolic resistance.

为什么这很重要

Understanding mTORC1 explains why older athletes need more protein per meal to trigger the same muscle-building response as younger people.

是什么在65岁前夺走你的生命,却可能在65岁后拯救你——蛋白质的悖论

MTTP (Microsomal Triglyceride Transfer Protein)

定义

MTTP is a protein essential for loading triglycerides onto ApoB in the liver and intestine, enabling the assembly and secretion of ApoB-containing lipoproteins such as VLDL and chylomicrons. Biallelic loss-of-function mutations in MTTP cause abetalipoproteinemia, virtually eliminating circulating ApoB particles.

为什么这很重要

It is the molecular switch whose failure produces the human zero-ApoB model, confirming the link between ApoB assembly and atherosclerosis risk.

心脏病是一种选择吗?阻止斑块形成的‘零风险’秘诀

动脉粥样硬化多族裔研究

定义

A large prospective cohort study of adults initially free of cardiovascular disease that has provided foundational data on coronary artery calcium scoring, demonstrating a strong graded association between CAC burden and future coronary events and validating the risk implications of a CAC score of zero.

为什么这很重要

MESA data underpin current clinical guidelines on when to use CAC scoring and how to interpret results, making it a reference point for any discussion of calcium scoring.

Read: LDL “BAD” Cholesterol: Apolipoprotein B, Imaging Resolution, and the Illusion of “Normal” Coronary Arteries at Age 60

Multidetector Computed Tomography (MDCT)

定义

A CT scanner design that uses multiple rows of detectors to acquire several image slices simultaneously, offering high spatial resolution and fast acquisition; it has largely replaced earlier electron beam CT for coronary calcium scoring because of its wide availability and comparable accuracy.

为什么这很重要

MDCT is the workhorse behind almost every CAC score reported today, so understanding its role clarifies why the test is now widely accessible.

Read: Coronary Calcium and Athletic Risk

Muscle Protein Synthesis (MPS)

定义

Muscle protein synthesis is the cellular process by which muscle fibers build new contractile proteins, driven by amino acid availability and mechanical loading; the rate of MPS relative to muscle protein breakdown determines whether muscle mass is gained, maintained, or lost. In older adults, the MPS response to a given protein dose is blunted compared with younger adults.

为什么这很重要

MPS is the key process athletes are trying to stimulate with post-workout protein, and its age-related decline is the core problem this article addresses.

是什么在65岁前夺走你的生命,却可能在65岁后拯救你——蛋白质的悖论

Muscle Symptoms From Statins

定义

Some people report aching or weak muscles after starting a statin. Real statin muscle injury exists, but it is rare.

为什么这很重要

Carefully designed studies where neither patient nor doctor knew who got the real pill found that most reported symptoms appeared just as often on placebo. This is called the nocebo effect — expecting a side effect can produce it. It matters because it leads many people to quit a medicine that was protecting them.

我应该服用降胆固醇药吗?当然应该。.

心肌梗死

定义

See Heart Attack for the full entry.

Myocardial Perfusion

定义

Myocardial perfusion refers to the delivery of oxygenated blood to the heart muscle itself; it can be measured with PET imaging to assess whether dietary or pharmacological interventions have improved blood flow to previously under-supplied heart tissue.

为什么这很重要

Evidence of improved myocardial perfusion on imaging provides functional confirmation that plaque regression translates into real benefit for the heart muscle.

阅读:已被证实唯一能消除动脉斑块的饮食(不是地中海饮食!)

Myocardium

定义

The myocardium is the muscular wall of the heart — the part that actually squeezes to push blood around your body.

为什么这很重要

When it is starved of oxygen for too long, the damage is permanent. Muscle that dies is replaced by scar tissue, which does not contract.

肌动蛋白

定义

Myokines are small signaling proteins secreted by skeletal muscle cells during contraction that travel through the bloodstream to exert effects on distant organs including the heart, liver, and fat tissue. Examples discussed in the article include irisin, FGF21, and decorin, which influence fat metabolism, glucose handling, and inflammation.

为什么这很重要

Myokines are the molecular mechanism explaining why building muscle can benefit cardiovascular health even independent of weight loss.

Read: Can pumping iron help your pumping heart?

Myristic Acid (C14:0)

定义

A 14-carbon saturated fatty acid present at 16–21% in coconut oil; alongside lauric acid, it is considered one of the most potent LDL-cholesterol–raising saturated fatty acids in the diet when exchanged for cis-unsaturated fats.

为什么这很重要

It explains a large part of why coconut oil raises LDL more than oils rich in oleic acid.

椰子油作为健康食品的神话:行业如何左右你的饮食!

返回顶部

N

N-Glycolylneuraminic Acid (Neu5Gc)

定义

A non-human sialic acid sugar molecule found on the cell surfaces of most mammals, including cattle, pigs, and sheep, but not synthesized by humans; it can be absorbed from red meat and incorporated into human tissues, where it may trigger an immune response.

为什么这很重要

It is the central molecule in the proposed red meat–inflammation–atherosclerosis pathway discussed throughout the article.

Read: Q&A: Can Your Love for Red Meat Be Dangerous?

n-of-1 Trial

定义

A blinded, randomized crossover trial conducted in a single individual who alternates between active treatment and placebo in multiple cycles, allowing attribution of symptoms to drug versus expectation within that person rather than relying on population averages.

为什么这很重要

Provides the most rigorous individual-level evidence for whether a specific athlete's symptoms are truly caused by their statin.

阅读:《运动员的胆固醇:如何在不影响竞技状态的情况下降低低密度脂蛋白(LDL)》(他汀类药物实用指南)

NADH/NAD+ Ratio

定义

A measure of the cellular redox state reflecting the balance between the reduced (NADH) and oxidized (NAD+) forms of nicotinamide adenine dinucleotide; ethanol metabolism raises this ratio in liver cells, suppressing gluconeogenesis and shifting hepatic metabolism toward fatty acid synthesis, which contributes to hypertriglyceridemia and may accelerate atherosclerosis in heavy drinkers.

为什么这很重要

This biochemical shift links alcohol metabolism directly to worsened lipid profiles and liver fat accumulation.

半满的玻璃杯:为什么科学正向“有益心脏健康”的饮酒习惯挥手告别

Nanoplastics

定义

Plastic particles smaller than 1 micrometer (often defined as under 100 nanometers) that can penetrate cell membranes and tissues more readily than larger microplastic fragments; referenced alongside microplastics in human atheromatous plaque studies.

为什么这很重要

Nanoplastics represent the most biologically active and penetrating end of the plastic-particle spectrum relevant to cardiovascular research.

问答:日常微塑料是否在助长心脏病?

NAPS Trial (Nattokinase Atherothrombotic Prevention Study)

定义

A randomized, double-blind, placebo-controlled trial that tested nattokinase at 2,000 Fibrinolytic Units per day and measured its effect on subclinical atherosclerosis using carotid ultrasound and arterial stiffness; the trial found no significant slowing of atherosclerosis progression compared to placebo.

为什么这很重要

The NAPS trial is the highest-quality human evidence on nattokinase and plaque, making it the benchmark against which all other claims should be judged.

纳豆激酶与心血管斑块:人体研究的真实情况

叙述性综述

定义

A narrative review is a type of scientific article that synthesizes existing research on a topic through expert selection and interpretation rather than through a pre-registered, exhaustive search with formal bias scoring; unlike a systematic review or meta-analysis, its conclusions can reflect the authors' editorial judgment in choosing which studies to emphasize.

为什么这很重要

Knowing the study design helps you judge how much weight to give the article's conclusions versus findings from more rigorous systematic reviews.

年轻时(20多岁和30多岁)胆固醇高,即使日后降下来了,以后也会引发心脏病发作吗?

国家胆固醇教育计划

定义

The National Cholesterol Education Program was a U.S. government initiative launched in 1985 that produced a series of Adult Treatment Panel (ATP) reports — ATP I in 1988, ATP II in 1993, and ATP III in 2001 — which established the first standardised numerical LDL-C targets and shaped clinical cholesterol management for several decades.

为什么这很重要

The NCEP guidelines defined what 'high' and 'normal' cholesterol meant for a generation of patients and physicians, making their evolution central to understanding how targets have changed.

为什么你‘正常’的胆固醇其实是一个警告信号

纳豆激酶

定义

A fibrinolytic enzyme extracted from natto (fermented soybeans) that breaks down fibrin, the protein scaffold of blood clots; it is widely sold as a supplement for circulation, blood pressure, and—controversially—plaque reduction.

为什么这很重要

Understanding what nattokinase actually does biologically helps distinguish its legitimate uses from exaggerated marketing claims.

纳豆激酶与心血管斑块:人体研究的真实情况

Near-Infrared Spectroscopy (NIRS)

定义

Near-infrared spectroscopy is an intravascular imaging technique that uses light to detect the lipid content of coronary plaques, helping identify lipid-rich plaques that may be at higher risk of rupture.

为什么这很重要

It adds information about plaque composition — not just size or calcification — which matters because lipid-rich plaques are more likely to cause heart attacks.

Read: What’s more important, diet vs drugs, or outcome vs regression?

Neointimal Hyperplasia

定义

The rapid overgrowth of smooth muscle and endothelial tissue inside an artery after stent placement, which can progressively narrow or completely re-block the vessel; it is the principal problem that drug-eluting stents were designed to prevent.

为什么这很重要

Neointimal hyperplasia was the major limitation of bare-metal stents and directly drove the development of drug-eluting technology.

Read: The Ins and Outs of Cardiac Stents

Net Reclassification Improvement (NRI)

定义

A statistical measure of how much a new test or biomarker improves the correct classification of individuals into higher or lower risk categories compared with an existing model; in the SCAPIS study, adding CCTA to the Pooled Cohort Equation produced an NRI of 0.133, largely by correctly upgrading risk in people who later had events.

为什么这很重要

It quantifies, in practical terms, how many patients are moved into the right treatment category when a better test is used.

一种无需手术透视心脏的新方法——预测心脏病发作的最佳途径

Neu5Ac (N-Acetylneuraminic Acid)

定义

Neu5Ac is the predominant sialic acid found on human cell surfaces, synthesized de novo in all vertebrates; because humans lack CMAH, Neu5Ac cannot be converted to Neu5Gc, making it the only sialic acid decorating human glycoproteins and glycolipids.

为什么这很重要

It is the 'self' sugar the human immune system is calibrated to recognize, so any foreign sialic acid incorporated into tissues triggers an immune response.

你的免疫系统在与你的牛排开战吗?

Neu5Gc

定义

Neu5Gc is a sugar molecule found in red meat. Humans lost the ability to make it millions of years ago, but we still absorb it when we eat beef, pork, or lamb.

为什么这很重要

Because our bodies see it as foreign, we make antibodies against it. Some researchers think this low-grade immune reaction against our own tissues may be one reason red meat is tied to heart disease.

你的免疫系统在与你的牛排开战吗?

Neuroendocrinology

定义

The branch of science studying how the nervous system and endocrine (hormone) system interact, particularly how hormones regulate brain function and how the brain controls hormone secretion.

为什么这很重要

Menopause is increasingly understood as a neuroendocrine event, not just a reproductive one, so knowing this term clarifies the scope of what is being discussed.

绝经 内分泌 心血管 风险

Neuromuscular Timing

定义

The coordinated sequencing of nerve signals to muscles that produces smooth, efficient movement patterns; it can be disrupted by injury or surgery and must be deliberately retrained during rehabilitation.

为什么这很重要

Poor neuromuscular timing wastes energy and increases injury risk, making its recovery an important but often overlooked part of returning to exercise after orthopedic surgery.

Read: The Hour That Would Not End

NF-κB (Nuclear Factor Kappa-B)

定义

NF-κB is a protein complex that acts as a master regulator of inflammation inside cells; when activated in macrophages and vascular cells, it switches on genes that produce inflammatory cytokines and promote atherosclerotic plaque growth, and GLP-1 receptor signaling suppresses its translocation into the cell nucleus.

为什么这很重要

NF-κB is the molecular switch that GLP-1 drugs turn down to reduce vascular inflammation — understanding it explains the mechanism behind the early heart benefits.

Read: Ozempic and Mounjaro: Saving Your Heart BEFORE the Scale Moves

NHLBI Pediatric Lipid Guidelines

定义

Evidence-based recommendations issued by the U.S. National Heart, Lung, and Blood Institute defining acceptable, borderline, and high thresholds for cholesterol, LDL-C, HDL-C, and triglycerides in children aged 2–19, and recommending universal lipid screening at ages 9–11 with earlier screening in high-risk families.

为什么这很重要

These are the clinical cutoffs pediatricians use to decide whether a child's cholesterol warrants lifestyle changes or further evaluation.

Read: Do Babies Need Statins?

Ni-Hon-San Study

定义

The Ni-Hon-San study compared Japanese men living in Japan, Hawaii, and San Francisco, finding that coronary heart disease rates rose with migration westward alongside increases in serum cholesterol, body mass index, and saturated fat intake, providing influential evidence that environment and diet—rather than genetics alone—drive a large share of cardiovascular risk.

为什么这很重要

It is one of the classic demonstrations that heart disease risk is not fixed by ancestry and that lifestyle changes can matter across a lifetime.

Read: What is the difference between Mediterranean and whole-food plant-based diets for heart disease?

烟酸

定义

Niacin is vitamin B3, which at very high doses lowers LDL and raises HDL.

为什么这很重要

It looked promising for decades. Then large trials adding it to statins showed no benefit and more side effects, and it was largely abandoned — another casualty of the idea that raising HDL helps.

Read: Case Study

一氧化氮生物利用度

定义

The degree to which the endothelium can produce and maintain adequate levels of nitric oxide, a signaling molecule that keeps blood vessels dilated, inhibits platelet clumping, and prevents inflammatory cells from adhering to the arterial wall.

为什么这很重要

The article identifies impaired nitric oxide bioavailability as a key mechanism by which diet and LDL levels drive atherosclerosis, and restoring it as central to disease stabilization.

Read: Can Heart Disease Be Cured?

NLRP3 炎症小体

定义

The NLRP3 inflammasome is an intracellular protein complex in immune cells that, when activated by cholesterol crystals, oxidized lipids, or other danger signals within an atherosclerotic plaque, triggers the release of the inflammatory cytokines interleukin-1β and interleukin-6, accelerating plaque growth and instability.

为什么这很重要

It is a key mechanism linking cholesterol buildup to inflammation in the artery wall, and a target of newer cardiovascular therapies like colchicine.

健美、迅捷且险些丧命:世界级自行车手如何发现隐匿性心脏病

NMR Lipoprotein Particle Analysis (LDL-P / HDL-P)

定义

NMR lipoprotein particle analysis uses nuclear magnetic resonance spectroscopy to count the number of circulating LDL and HDL particles (reported as LDL-P in nmol/L and HDL-P in µmol/L), providing information about particle concentration independent of the cholesterol mass each particle carries.

为什么这很重要

Particle number, rather than cholesterol mass alone, more directly reflects the number of ApoB-containing particles able to penetrate the arterial wall and drive atherosclerosis.

您的细胞会自行合成胆固醇——那为什么您的血液里到处都是它?

反安慰剂效应

定义

The nocebo effect is the placebo effect in reverse: if you expect a medicine to cause a side effect, you are more likely to actually feel it.

为什么这很重要

This is not imaginary — the discomfort is real. It matters enormously with statins, where studies giving people real pills and dummy pills without telling them found muscle aches happening at nearly the same rate in both groups.

我应该服用降胆固醇药吗?当然应该。.

Non-Displaced Fracture

定义

A bone fracture in which the broken segments remain in their normal anatomical alignment; because the fragments have not shifted, surgical fixation is often unnecessary, and healing can proceed with controlled weight-bearing.

为什么这很重要

Understanding fracture classification helps patients and readers appreciate why some breaks allow earlier return to activity than others.

Peter Megdal 于 2021 年 10 月 14 日创造了全国小时计时赛纪录

非高密度脂蛋白胆固醇

定义

Non-HDL cholesterol is a simple calculation: your total cholesterol minus your HDL. What's left is the cholesterol riding in all the particles that can harm your arteries.

为什么这很重要

It costs nothing extra, appears on every lab report you already have, and predicts risk better than LDL alone. If you cannot get an ApoB test, this is the next best thing.

为什么你‘正常’的胆固醇其实是一个警告信号

Non-HDL-Years

定义

Non-HDL-years is a cumulative exposure metric defined as the area under the non-HDL-cholesterol-versus-age curve; it captures the combined cholesterol content of all apoB-containing particles, including remnants, and has been validated in young-adult cohort studies as a predictor of cardiovascular risk, though no clear advantage over LDL-years has been demonstrated.

为什么这很重要

It broadens the exposure picture beyond LDL alone by including triglyceride-rich remnant particles that also contribute to atherogenesis.

载脂蛋白B:更长、更高、更糟

Non-Invasive Test

定义

A non-invasive test is a diagnostic procedure that obtains information about the body without breaking the skin or entering a body cavity; the coronary artery calcium scan is described as non-invasive because it requires only a brief CT scan rather than catheterization or surgery.

为什么这很重要

Knowing a test is non-invasive helps readers understand why it can be offered broadly as a screening tool rather than reserved for sick patients.

Read: You Feel Fine – That’s the Problem

Non-Obstructive Plaque

定义

Atherosclerotic plaque that occupies less than 50% of the coronary artery lumen, allowing blood to flow normally and typically producing no symptoms on standard stress testing; it is nonetheless the source of the majority of myocardial infarctions when it ruptures.

为什么这很重要

Because it causes no obvious blockage, non-obstructive plaque is routinely missed by stress tests, highlighting the need for anatomical imaging.

一种无需手术透视心脏的新方法——预测心脏病发作的最佳途径

Non-Synonymous SNP (Single Nucleotide Polymorphism)

定义

A single-letter change in a DNA coding sequence that alters the amino acid encoded at that position in the resulting protein, potentially changing the protein's structure, stability, or function; distinguished from synonymous SNPs, which change the DNA letter but not the amino acid.

为什么这很重要

Non-synonymous SNPs like the IL6R Asp358Ala variant are the molecular basis of many genetic 'shields' and 'vulnerabilities' discussed in cardiovascular genetics.

阅读:基因彩票:为什么你不能指望自己“刀枪不入”

Noncalcified Plaque

定义

Atherosclerotic deposits within artery walls that have not yet undergone calcification; sometimes called 'soft' plaque, these lesions are lipid-rich and structurally unstable, making them more prone to rupture and acute thrombosis than calcified plaque.

为什么这很重要

Most heart attacks originate from rupture of noncalcified rather than heavily calcified plaques, so detecting it is central to genuine heart attack prevention.

一种无需手术透视心脏的新方法——预测心脏病发作的最佳途径

北卡累利阿项目

定义

The North Karelia Project was a community-wide public-health programme launched in Finland in 1972 that targeted smoking, diet, and blood pressure across an entire regional population, and is cited as one of the clearest natural experiments showing that population-level risk-factor change — not medicine alone — can drive large reductions in coronary heart disease.

为什么这很重要

North Karelia is the model example of how policy-driven, population-wide prevention can achieve cardiovascular gains that individual clinical treatment cannot replicate at scale.

心血管疾病史

NORVIT Trial

定义

A randomized trial of 3,749 heart attack survivors treated with B vitamins for a median of 40 months that found no cardiovascular benefit from homocysteine lowering; a secondary comparison also identified a borderline signal suggesting possible harm in the group receiving all three vitamins together.

为什么这很重要

It is one of the key trials establishing that lowering homocysteine after a heart attack does not improve outcomes and may warrant caution with combined B-vitamin regimens.

补充L-甲基叶 folate + 活性B族维生素降低同型半胱氨酸能否帮助预防动脉粥样硬化并减少斑块?

Norwegian 4×4 Protocol

定义

A high-intensity interval training structure consisting of four bouts of four minutes at 90–95% of maximum heart rate, each separated by three minutes of active recovery; it is the specific HIIT format studied for its ability to drive ventricular remodeling and improve VO₂max.

为什么这很重要

This precise protocol is the 'gold standard' intervention discussed for reversing cardiac stiffness and triggering plaque regression.

你的心脏比你更老吗?逆转心血管年龄的科学

NPC1L1

定义

NPC1L1 is the transporter in your intestine that absorbs cholesterol from food and bile. Ezetimibe blocks it.

为什么这很重要

People born with a less active version absorb less cholesterol and have fewer heart attacks — genetic confirmation, arriving before the drug trials finished, that this was a worthwhile target.

心血管保护的遗传架构

氨基末端脑钠肽前体

定义

NT-proBNP (N-terminal pro-B-type natriuretic peptide) is a cardiac biomarker released into the bloodstream when the heart muscle is under mechanical stress or pressure overload; elevated levels in otherwise asymptomatic adults can signal early heart failure or advancing cardiovascular disease before any symptoms appear.

为什么这很重要

A raised NT-proBNP can reveal hidden cardiac stress in someone who feels perfectly well, prompting earlier investigation or treatment.

医生没有为你开具的心脏检查

需治疗人数

定义

Number needed to treat, or NNT, is how many people must take a treatment for one of them to benefit.

为什么这很重要

An NNT of 50 means fifty people take the drug so that one avoids a heart attack. It sounds discouraging until you realize nobody knows in advance who the one will be — and that most preventive medicine works this way.

每日阿司匹林究竟是在夺走你的生命还是在拯救你?最新科学研究怎么说。.

Nurses' Health Study (NHS)

定义

The Nurses' Health Study is a large, long-running prospective cohort of female registered nurses in the United States that has tracked lifestyle, diet, and health outcomes for decades; a pooled analysis of NHS and NHS II (117,025 women) is the primary dataset cited in this article for the association between resistance training and cardiovascular risk.

为什么这很重要

Understanding where the '44% lower MI risk' figure comes from helps readers judge how much weight to give the finding.

Read: Can pumping iron help your pumping heart?

Nutritional Epidemiology

定义

The branch of epidemiology that studies relationships between dietary patterns and disease outcomes in populations, relying primarily on observational data such as food-frequency questionnaires and disease registries.

为什么这很重要

Much of the population evidence cited—including the China–Cornell–Oxford Project and Adventist Health Studies—comes from nutritional epidemiology, which has recognised limitations the reader should understand.

Read: Can Diet Really Reverse Heart Disease?

Nutritional Ketosis

定义

A metabolic state deliberately maintained through a very-low-carbohydrate diet, in which blood β-hydroxybutyrate is chronically elevated (typically 0.5–3 mmol/L) and the body preferentially burns fat and ketones for fuel; distinct from the much higher ketone levels seen in diabetic ketoacidosis.

为什么这很重要

The article uses this term when discussing long-term keto interventions in type 2 diabetes and their mixed effects on cardiovascular risk markers.

生酮饮食 vs. 全食植物性饮食:关于运动表现、胰岛素敏感性、逆转心脏病和长寿的硬核证据是什么?

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O

OATP1B1

定义

OATP1B1 is a hepatic uptake transporter encoded by the SLCO1B1 gene that actively carries statins — particularly hydrophilic ones — from the blood into liver cells; when its activity is reduced by genetic variants or drug interactions, statin plasma levels rise and muscle toxicity risk increases.

为什么这很重要

Many cases of statin muscle toxicity trace back to reduced OATP1B1 function, whether from genetics or interacting drugs, making it a key factor in personalized prescribing.

我应该服用降胆固醇药吗?当然应该。.

OCEAN(a)-Outcomes Trial

定义

OCEAN(a)-Outcomes is an ongoing phase 3 cardiovascular outcomes trial testing whether olpasiran, an siRNA that lowers Lp(a), reduces hard cardiovascular events in patients with established atherosclerotic disease and elevated Lp(a).

为什么这很重要

Its results will determine whether aggressively lowering the inherited Lp(a) form of ApoB can translate genetic risk reduction into fewer heart attacks and strokes.

为什么载脂蛋白B(ApoB)很重要?

优势比(OR)

定义

An odds ratio is a statistical measure expressing how much more (or less) likely an outcome is in one group compared with another; an OR of 1.71 for ApoB and coronary heart disease means that genetically higher ApoB is associated with 71% higher odds of developing the disease.

为什么这很重要

Knowing how to read an odds ratio helps you judge how strong the evidence linking ApoB to heart disease really is.

不要再迷信低密度脂蛋白(LDL)!关于载脂蛋白B(ApoB)、胰岛素抵抗与糖尿病的真相

ODYSSEY OUTCOMES Trial

定义

A large randomized controlled trial evaluating alirocumab in patients after an acute coronary syndrome; its cognitive safety data, alongside meta-analyses, showed no increased dementia risk with profound LDL lowering.

为什么这很重要

Corroborates FOURIER findings across a different PCSK9 inhibitor, strengthening the overall safety conclusion.

Read: Cholesterol: How Low is Too Low?

冲绳饮食

定义

The traditional dietary pattern of Okinawa, Japan—historically comprising approximately 69% sweet potatoes with very low animal product consumption—associated with one of the world's highest concentrations of centenarians.

为什么这很重要

It is a real-world example of an extremely high-carbohydrate, low-protein diet linked to exceptional longevity, directly contradicting the premise of low-carbohydrate diets for long life.

营养学大辩论:原始人饮食法/生酮饮食/旧石器饮食与全食物植物性饮食对长寿和心脏病影响的循证现实

Oleocanthal

定义

A naturally occurring phenolic compound in extra-virgin olive oil that inhibits inflammatory enzymes in a manner similar to ibuprofen; it is proposed as one mechanism by which the Mediterranean diet reduces vascular inflammation.

为什么这很重要

It gives a specific biological reason—beyond 'healthy fats'—why olive oil is associated with lower cardiovascular risk.

炎症、脂蛋白与以低密度脂蛋白(LDL)为中心的时代的终结

Oligodendrocytes

定义

Oligodendrocytes are glial cells in the central nervous system responsible for producing myelin, the insulating sheath that wraps around nerve fibers and enables rapid electrical signal transmission; TMAO-induced pyroptosis of oligodendrocytes causes demyelination, impairing neural communication and contributing to cognitive decline.

为什么这很重要

Damage to these cells by TMAO provides a direct cellular link between gut bacteria metabolism and brain disease.

牛排中的隐形毒素:肠道细菌如何引发心脏病

橄榄油

定义

Olive oil is the main fat of the Mediterranean diet, rich in monounsaturated fat and, in the extra virgin form, in plant compounds called polyphenols.

为什么这很重要

It is a reasonable fat to build a diet around. Where the evidence gets stretched is in claims that it is uniquely protective — much of its benefit appears to come from replacing worse fats rather than from special properties of its own.

Read: Is Olive Oil Actually Healthy?

奥帕西兰

定义

Olpasiran is a small-interfering RNA (siRNA) drug in phase 3 clinical development that dramatically reduces circulating Lp(a) levels by silencing the gene responsible for its production in the liver.

为什么这很重要

It represents one of the first potential treatments for the inherited cardiovascular risk carried by elevated Lp(a), which statins cannot address.

为什么载脂蛋白B(ApoB)很重要?

Omega-3 Fatty Acids

定义

Omega-3s are fats found mainly in oily fish, walnuts, and flaxseed.

为什么这很重要

They clearly lower triglycerides at high doses. Whether ordinary fish oil capsules prevent heart attacks is much less certain, and trial results have been mixed depending on the dose and the exact form used.

光学相干断层扫描

定义

Optical coherence tomography, or OCT, threads a light-based probe into a coronary artery. It sees roughly ten times finer detail than ultrasound.

为什么这很重要

It is the only tool that can actually measure the thickness of a plaque's fibrous cap in a living person. That makes it the standard for asking whether a treatment made a plaque safer.

健美、迅捷且险些丧命:世界级自行车手如何发现隐匿性心脏病

Optimal Medical Therapy (OMT)

定义

OMT refers to the full package of evidence-based drug treatments and lifestyle interventions—typically including statins, antiplatelet agents, blood pressure control, and lifestyle modification—used as the standard non-surgical management for coronary artery disease.

为什么这很重要

The major trials in this article compare surgery and stenting against OMT, making it essential to understand what OMT actually involves.

治疗生物学而非管道:心脏病学激进的新方法

口服抗凝治疗

定义

Drug therapy that reduces the blood's ability to clot, used in atrial fibrillation to prevent stroke caused by clots forming in the atria; common agents include warfarin and the newer direct oral anticoagulants (DOACs).

为什么这很重要

For the Masters athlete with AF, stopping OAC can more than double stroke risk — a danger that persists even after a 'successful' ablation.

接受过治疗的心房颤动大师级运动员(50岁以上)的心血管风险管理与训练调整:专家报告

ORBITA Trial

定义

A randomized, sham-controlled clinical trial completed in 2017 that compared coronary stenting with a placebo procedure in patients with stable angina and found no significant difference in exercise tolerance or symptom relief between the two groups.

为什么这很重要

ORBITA was the first placebo-controlled trial of stenting and provided the strongest evidence that much of the perceived benefit of elective stenting may be a placebo effect.

Read: The Ins and Outs of Cardiac Stents

ORION Trials (ORION-1, ORION-10, ORION-11)

定义

A series of phase 2 and phase 3 randomized trials evaluating inclisiran in patients with elevated LDL cholesterol; the trials established that two injections in the first year followed by one injection every six months produced sustained LDL-C reductions of approximately 50%.

为什么这很重要

The ORION program is the direct evidence base for inclisiran's twice-yearly dosing schedule—the central promise of the article.

Read: The Cholesterol Breakthrough: From Daily Pills to Twice-a-Year Shots

欧尼斯生活方式心脏试验

定义

A randomized controlled trial led by Dean Ornish that tested whether a comprehensive lifestyle program—including a very low-fat, whole-food, plant-based diet, moderate exercise, stress management, and social support—could halt or reverse coronary atherosclerosis without lipid-lowering drugs; 82% of intervention participants showed measurable plaque regression at one year.

为什么这很重要

This trial is the primary evidence cited for the claim that coronary artery disease can be partially reversed through lifestyle alone, making it a landmark reference for anyone reading about heart disease resolution.

Read: Can Heart Disease Be Cured?

欧尼斯计划

定义

The Ornish program (Lifestyle Heart Trial) is an intensive multicomponent intervention combining a very-low-fat whole-food plant-based diet (under 10 percent of calories from fat), stress management, moderate exercise, and group support, which reported angiographic regression of coronary lesions in a small randomized trial; the dietary effect cannot be fully separated from the co-interventions.

为什么这很重要

It is frequently cited as evidence that diet can 'reverse' heart disease, though the review notes the angiographic signal rests on limited evidence.

Read: What is the difference between Mediterranean and whole-food plant-based diets for heart disease?

Osteogenic Differentiation

定义

A biological process in which vascular smooth muscle cells or other arterial wall cells adopt a bone-cell-like phenotype and deposit calcium-containing mineral, driving plaque calcification; it is a key mechanism underlying the formation of coronary artery calcium.

为什么这很重要

This process links chronic inflammation and lipid infiltration to the calcification that a CAC scan detects.

零的力量:没有钙 – 没有风险?

Outcome-Wide Umbrella Review

定义

A systematic synthesis that pools results across multiple meta-analyses covering many different health outcomes simultaneously, often combining observational, Mendelian randomization, and interventional evidence to assess the overall evidence base for a given exposure.

为什么这很重要

The 2025 umbrella review cited in this article represents one of the most comprehensive assessments of homocysteine's causal role across all cardiovascular outcomes, making it important for interpreting the overall evidence.

补充L-甲基叶 folate + 活性B族维生素降低同型半胱氨酸能否帮助预防动脉粥样硬化并减少斑块?

Outward Remodeling

定义

Outward remodeling (also called compensatory or positive remodeling) is the process by which an artery expands its outer diameter to accommodate growing plaque, preserving the inner lumen even as the artery wall becomes more diseased; because of this, standard tests that measure only the lumen opening can miss substantial atherosclerosis.

为什么这很重要

Understanding outward remodeling explains why a 'clear' angiogram does not guarantee healthy arteries.

Read: What is the difference between Mediterranean and whole-food plant-based diets for heart disease?

Oxidative Phosphorylation

定义

The mitochondrial process by which cells use oxygen to generate ATP, the body's primary energy currency; aerobic training increases the efficiency of this process, allowing more power output from the same oxygen delivery.

为什么这很重要

It is the core energy pathway stressed in prolonged cardiovascular exercise and a primary target of endurance training adaptations.

Read: The Hour That Would Not End

Oxidative Stress

定义

Oxidative stress is an imbalance between damaging reactive molecules and the body's ability to neutralize them.

为什么这很重要

It contributes to modifying LDL particles inside the artery wall, which is what makes them inflammatory. Supplementing antioxidants has nonetheless failed to prevent heart attacks, so the mechanism has not translated into a treatment.

冠状动脉斑块消退、管腔悖论与运动员的血管重塑:整合药物与全食物植物性策略

氧化低密度脂蛋白

定义

Oxidized LDL is an LDL particle that has been chemically damaged after getting stuck in an artery wall.

为什么这很重要

This damage is what makes the immune system treat it as an invader. A normal LDL particle is largely ignored; a damaged one triggers the whole inflammatory cascade that builds a plaque.

Read: Which Came First – the Lipid or the Inflammation? Apolipoprotein B and the Chicken-and-Egg Problem of Atherogenesis

Oxidized Phospholipids (OxPL) / Natural Autoantibodies (E06)

定义

Oxidized phospholipids are pro-atherogenic lipid fragments generated when LDL is oxidized within the artery wall; E06 is a naturally occurring IgM autoantibody that specifically neutralizes these oxidized phospholipids, representing an innate immunological defense mechanism that can limit foam cell formation and plaque progression.

为什么这很重要

The level of these protective antibodies varies between individuals and may partly explain why some people accumulate far less dangerous plaque despite similar LDL levels.

阅读:基因彩票:为什么你不能指望自己“刀枪不入”

Oxygen Debt (Excess Post-Exercise Oxygen Consumption)

定义

A state reached during intense aerobic exercise when oxygen supply to working muscles falls short of demand, forcing partial reliance on anaerobic energy pathways and causing a rapid accumulation of metabolic byproducts that impair continued effort.

为什么这很重要

In a purely aerobic, 60-minute maximal event, incurring oxygen debt prematurely is a critical pacing error with direct cardiovascular consequences.

Read: Cyclist Peter Megdal seeks out, and overcomes, difficult obstacles

Oxysterols

定义

Oxysterols are oxidised derivatives of cholesterol formed when cholesterol reacts with oxygen; within cells they act as signalling molecules that activate LXR and promote INSIG-mediated retention of the SCAP–SREBP complex, thereby suppressing further cholesterol synthesis and stimulating its export.

为什么这很重要

They act as the cell's internal cholesterol sensor, linking excess cholesterol to the mechanisms that export it and prevent toxic build-up.

胆固醇:它有什么用?

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P

P-Value

定义

A p-value estimates how likely you would be to see a result at least this striking if the treatment did nothing at all.

为什么这很重要

The conventional cutoff of 0.05 is a convention, not a law of nature. A small p-value says a result is unlikely to be chance; it says nothing about whether the effect is large enough to matter to a patient.

Read: The Future of Heart Disease Management

p70S6K1 和 4E-BP1

定义

p70S6K1 (S6 kinase 1) and 4E-BP1 are two downstream signaling proteins that mTORC1 phosphorylates to initiate the translation of messenger RNA into new muscle proteins; their activation is the molecular 'green light' that converts an amino acid signal into actual muscle building. Measuring their phosphorylation is a standard laboratory readout of anabolic signaling in muscle biopsy studies.

为什么这很重要

They are the immediate molecular targets whose blunted activation in older muscle explains why the same protein meal produces less muscle repair than in younger adults.

是什么在65岁前夺走你的生命,却可能在65岁后拯救你——蛋白质的悖论

PACIFIC-1

定义

A clinical study in which AI-assisted quantitative CT coronary angiography (AI-QCT) was compared head-to-head with human expert readers; AI-QCT achieved an AUC of 0.91 for detecting obstructive stenosis, outperforming level-3 expert cardiologists who scored 0.77.

为什么这很重要

It is the key evidence cited in this article to demonstrate that AI surpasses even the most experienced human readers in coronary plaque assessment.

一种无需手术透视心脏的新方法——预测心脏病发作的最佳途径

Pacing (Metronomic Pacing)

定义

A race strategy in which a cyclist maintains a near-constant lap time throughout an effort rather than surging and recovering; metronomic pacing is considered optimal for Hour Record attempts because any deviation above threshold pace is very difficult to recover from.

为什么这很重要

Precise pacing—Megdal was within three hundredths of a second per lap—was identified as a critical factor separating his successful record from his earlier failures.

彼得·梅格达尔 (Peter Megdal) 登上《戴德姆时报》

Pack-Years

定义

Pack-years is a standardized measure of cumulative tobacco exposure calculated by multiplying the number of packs smoked per day by the number of years of smoking; the article uses it as the conceptual model for thinking about cumulative apoB exposure, noting that both metrics are imperfect summaries of lifetime exposure that carry more prognostic weight than a single current measurement.

为什么这很重要

The analogy helps explain why a single cholesterol reading — like a single day's cigarette count — captures little of the lifetime risk story.

载脂蛋白B:更长、更高、更糟

PACMAN-AMI

定义

PACMAN-AMI gave a PCSK9 inhibitor to patients immediately after a heart attack and imaged their non-culprit arteries with three different catheter techniques.

为什么这很重要

Plaque shrank, caps thickened, and fat content fell — all within a year. It showed how quickly aggressive lowering starts changing plaque structure.

健美、迅捷且险些丧命:世界级自行车手如何发现隐匿性心脏病

旧石器时代饮食法

定义

A dietary framework developed by Loren Cordain based on the premise that human metabolism is best adapted to the foods available to pre-agricultural hunter-gatherers, emphasising lean meats, fish, vegetables, fruits, and nuts while excluding grains, legumes, and dairy.

为什么这很重要

The Paleo Diet is one of the two competing paradigms at the centre of this debate and underpins Cordain's position on optimal protein intake.

Read: The Protein Debate

Para Athlete

定义

A competitive athlete who has an eligible physical, visual, or intellectual impairment recognized by governing sports bodies; Para athletes compete under classifications that account for the functional impact of their disability on performance.

为什么这很重要

Understanding this term helps readers appreciate that Megdal's records are set within a structured classification system, not simply despite his disability.

彼得·梅格达尔 (Peter Megdal) 登上《戴德姆时报》

Paracycling

定义

A competitive cycling discipline for athletes with physical, visual, or intellectual impairments, sanctioned by the UCI and organized into classification categories (C1–C5) based on the degree of functional limitation, with C5 representing the least severe impairment.

为什么这很重要

Understanding paracycling categories helps readers appreciate how athletes with physical challenges compete at elite levels.

Read: Cyclist Peter Megdal seeks out, and overcomes, difficult obstacles

Paracycling National Record

定义

The officially ratified best performance in a cycling discipline achieved by a para athlete competing within a specific national classification category, such as the C5 limb-impairment class for the hour event.

为什么这很重要

Knowing how performance records are classified for para athletes contextualises cardiac rehabilitation and return-to-sport benchmarks.

阅读:彼得·梅格达尔 2022 年一小时纪录挑战

PARADIGM Study

定义

PARADIGM (Progression of AtheRosclerotic PlAque DetermIned by Computed TomoGraphic Angiography IMaging) is a serial CCTA registry study that tracked changes in coronary plaque composition over time, providing key evidence that statin therapy shifts plaques toward denser, more stable calcium phenotypes.

为什么这很重要

It is one of the main studies cited to explain why a rising CAC score on statins can reflect plaque healing rather than worsening disease.

雌激素能保护女性动脉免受斑块形成吗?

Paroxysmal AF

定义

A form of atrial fibrillation in which episodes start and stop on their own, typically within 48 hours but by definition within 7 days; generally associated with better ablation outcomes than persistent or long-standing persistent AF.

为什么这很重要

The article notes that athletes with paroxysmal AF have a better chance of returning to high-level training after ablation.

问答:房颤、耐力训练与消融术——运动员需要了解的知识

Partial Pressure of Oxygen

定义

The portion of total atmospheric pressure contributed by oxygen; at 6,000 feet above sea level it is approximately 80 percent of its sea-level value, reducing the driving force that pushes oxygen from the lungs into the blood.

为什么这很重要

It is the key physical variable that makes high-altitude exercise harder and that athletes and researchers use to predict performance trade-offs at elevation.

Read: The Hour That Would Not End

Particle Burden

定义

Particle burden refers to the total number of atherogenic lipoprotein particles circulating in the plasma, best measured by ApoB; it is distinguished from cholesterol mass because it is the physical count of particles — not the amount of cholesterol they carry — that determines how frequently lipoproteins infiltrate and become entrapped in the arterial wall.

为什么这很重要

Particle burden is the core concept behind modern cardiovascular risk assessment that goes beyond a standard cholesterol panel.

胆固醇大谎言:揭露饮食行业的有组织否认

Patent

定义

In vascular medicine, patent describes a blood vessel that is open and freely conducting blood flow, as opposed to one that is narrowed or occluded; when a previously blocked artery is described as patent, it means blood is once again moving through it unobstructed.

为什么这很重要

Knowing what 'patent' means helps readers grasp the significance of Peter's artery reopening after years of intensive treatment.

健美、迅捷且险些丧命:世界级自行车手如何发现隐匿性心脏病

Pathogenic Variant

定义

A pathogenic variant is a gene mutation that has been demonstrated to cause or substantially increase the risk of a specific disease; in the context of inherited cardiac risk, it refers to mutations in genes such as those underlying Familial Hypercholesterolemia that markedly elevate lifetime heart disease probability.

为什么这很重要

Knowing whether you may carry one determines whether standard population-level screening thresholds apply to you.

Read: The Heart Health App That Finally Asks the Right Question

Pathognomonic

定义

A pathognomonic sign is one so specifically characteristic of a particular disease that its presence alone is sufficient to confirm the diagnosis; in HoFH, cutaneous and tendon xanthomas appearing before age four are considered pathognomonic because they are caused by cholesterol spillover so extreme it is almost exclusively seen in this condition.

为什么这很重要

Recognizing pathognomonic signs on a child's skin can trigger an early diagnosis that dramatically changes their prognosis.

Read: Children With 60-Year-Old Arteries: The Extreme Reality of HoFH

橄榄油共有财产基金会

定义

Patrimonio Comunal Olivarero is a Spanish olive-oil trade organization whose stated purpose is to promote Spanish olive-oil exports; it supplied the intervention oil and co-funded both PREDIMED and CORDIOPREV, making it the single industry sponsor entangled with virtually the entire randomized-trial evidence base for olive oil's cardiovascular efficacy.

为什么这很重要

Industry funding from an organization with a commercial interest in the outcome is a recognized source of bias that readers must weigh when evaluating olive oil trial results.

Read: Is Olive Oil Actually Healthy?

Paxlovid (Nirmatrelvir/Ritonavir)

定义

An oral antiviral medication authorized for treatment of COVID-19 in adults at high risk of severe illness; it works by inhibiting a protease the SARS-CoV-2 virus needs to replicate.

为什么这很重要

Knowing what Paxlovid is clarifies how Megdal managed an acute illness just weeks before a maximal cardiovascular effort.

Read: Cyclist Peter Megdal seeks out, and overcomes, difficult obstacles

PBX1 (Pre-B-Cell Leukemia Homeobox 1)

定义

A pioneer transcription factor whose genomic variants, identified in studies of 'super-resilient' older adults, are associated with maintenance of vascular structural integrity and preserved arterial elasticity with advancing age; it is hypothesized to regulate gene networks that counteract age-related arterial stiffening and degradation.

为什么这很重要

Genetic variants near PBX1 may partly explain why some individuals' arteries remain youthful and flexible into old age despite other risk factors.

阅读:基因彩票:为什么你不能指望自己“刀枪不入”

PCSK9

定义

PCSK9 is a protein made by your liver that destroys the docking ports your liver uses to pull cholesterol out of your blood.

为什么这很重要

Fewer ports means more cholesterol staying in circulation. People born with a broken version of this protein have low cholesterol and remarkably few heart attacks — a discovery that led directly to a whole class of new drugs.

Read: The Cholesterol Breakthrough: From Daily Pills to Twice-a-Year Shots

PCSK9 抑制剂

定义

A PCSK9 inhibitor is a medicine that blocks that cholesterol-destroying protein, leaving more docking ports available to clear particles from the blood.

为什么这很重要

These are injections, not pills, given every two to four weeks. They can cut LDL and ApoB by half or more even on top of a statin, and they are especially valuable for inherited high cholesterol.

Read: The Cholesterol Breakthrough: From Daily Pills to Twice-a-Year Shots

PCSK9 Monoclonal Antibodies (mAbs)

定义

Injectable protein-based drugs—such as evolocumab and alirocumab—that bind and neutralize circulating PCSK9 protein, preventing it from tagging LDL receptors for degradation; administered every two to four weeks, they can reduce LDL-C by approximately 50–60% on top of statin therapy.

为什么这很重要

PCSK9 mAbs established that very deep LDL lowering is both safe and effective, paving the way for inclisiran and gene-editing approaches that target the same pathway.

Read: The Cholesterol Breakthrough: From Daily Pills to Twice-a-Year Shots

PCSK9 Null Variant

定义

An extremely rare genetic variant that abolishes PCSK9 function entirely, resulting in LDL-C levels as low as approximately 15 mg/dL from birth; individuals with this phenotype appear to have normal neurocognitive function, providing a human proof-of-concept for profound systemic LDL depletion.

为什么这很重要

If even complete absence of PCSK9 function is cognitively safe, it sets an important lower bound for drug-induced LDL lowering.

Read: Cholesterol: How Low is Too Low?

PDAY

定义

PDAY, short for Pathobiological Determinants of Atherosclerosis in Youth, examined the arteries of young people aged 15 to 34 who died of other causes.

为什么这很重要

Raised lesions were already present in a substantial fraction of them, and the amount tracked with their cholesterol and smoking. Along with Bogalusa, it is why prevention is now discussed as a lifelong project.

先天性疾病

PDAY Study

定义

The Pathobiological Determinants of Atherosclerosis in Youth (PDAY) study was a pathological study that examined the coronary arteries and aortas of young people aged 15–34 who died from unrelated causes such as accidents; it demonstrated that early atherosclerotic lesions — fatty streaks and more advanced plaques — were already present in most adolescents and young adults, decades before any cli…

为什么这很重要

It is the key evidence behind the article's central point that heart disease begins far earlier in life than most people assume.

Read: You Feel Fine – That’s the Problem

Pelacarsen

定义

Pelacarsen is an RNA-targeted therapy (an antisense oligonucleotide) designed to lower lipoprotein(a) by reducing its production in the liver; it is given by intravenous or subcutaneous injection every few weeks and is currently in late-stage trials to determine whether Lp(a) reduction translates into fewer cardiovascular events.

为什么这很重要

Lipoprotein(a) is a major residual risk factor not addressed by statins, and pelacarsen represents a new class of drugs aimed at closing that gap.

健美、迅捷且险些丧命:世界级自行车手如何发现隐匿性心脏病

斑块负荷百分比

定义

Percent atheroma volume, or PAV, is the share of an artery segment taken up by plaque rather than open channel.

为什么这很重要

It is the standard yardstick in plaque-regression trials. Because it is a percentage of the whole vessel, it is fairer than measuring one spot — and it reveals how small real regression is, usually a change of one or two percentage points.

载脂蛋白B:更长、更高、更糟

Percent Diameter Stenosis (%DS)

定义

The percentage reduction in a coronary artery's luminal diameter at its narrowest point relative to a healthy reference segment in the same vessel; the Megdal Serial Angiogram uses %DS to grade severity—mild, moderate, or severe—and to quantify regression between the 2014 and 2018 studies.

为什么这很重要

Understanding %DS lets patients see exactly how much a blockage has shrunk and how doctors classify its danger level.

Read: Expert Angiographic Evaluation of Coronary Artery Disease Regression: The Megdal Serial Angiogram (2014–2018)

经皮冠状动脉介入治疗

定义

Percutaneous coronary intervention is a minimally invasive procedure, commonly known as angioplasty with or without stenting, in which a catheter is used to open a blocked coronary artery; it is included in the article as one of the four components of the composite major CVD endpoint tracked in the Nurses' Health Study analysis.

为什么这很重要

PCI is part of the outcome definition used to measure whether resistance training prevents serious cardiac events.

Read: Can pumping iron help your pumping heart?

Perimenopausal Depression (PMD)

定义

A pattern of clinically significant depressive symptoms that emerges specifically during the menopausal transition, driven by rapid fluctuations in estrogen rather than sustained low levels; women with a prior history of PMD are particularly susceptible to symptom recurrence with hormone flux.

为什么这很重要

Distinguishing PMD from general depression clarifies why some women's mood symptoms are uniquely tied to hormone changes rather than life circumstances alone.

绝经 内分泌 心血管 风险

牙周炎

定义

Chronic bacterial infection and inflammation of the gums and supporting tooth structures; the bacteria can enter the bloodstream and raise systemic CRP levels, making it an underrecognized driver of cardiovascular inflammatory risk.

为什么这很重要

It shows that heart risk extends beyond the arteries—treating gum disease is a measurable way to lower inflammation throughout the body.

炎症、脂蛋白与以低密度脂蛋白(LDL)为中心的时代的终结

外周动脉疾病

定义

Peripheral artery disease is plaque narrowing the arteries in your legs.

为什么这很重要

The classic symptom is cramping calf pain when walking that goes away with rest. It is important beyond the legs: if plaque is bad enough there to cause symptoms, it is almost certainly present in the heart too.

Peroxynitrite

定义

A reactive nitrogen species formed when nitric oxide is neutralized by superoxide radicals; its production during postprandial oxidative stress sharply reduces the bioavailable nitric oxide needed for arterial dilation and anti-atherogenic vascular function.

为什么这很重要

It is the chemical step that explains why a high-fat meal impairs artery function for hours afterward.

Read: Pathophysiological Determinants of Atherosclerotic Regression: The Criticality of Ultra-Low-Fat Whole-Food Plant-Based Nutritional Protocols

PESA Cohort

定义

PESA (Progression of Early Subclinical Atherosclerosis) is a Spanish prospective cohort of asymptomatic adults aged 40 to 54 in which multisite vascular imaging detected subclinical atherosclerosis in 63 percent of participants, demonstrating the high burden of silent arterial disease in middle age.

为什么这很重要

It reinforces that most early atherosclerosis is invisible to standard clinical evaluation, underlining the case for prevention before symptoms develop.

先天性疾病

Pesco-Vegetarian

定义

A dietary pattern that excludes meat and poultry but includes fish and seafood alongside plant foods; in the AHS-2 cohort, pesco-vegetarians showed the strongest survival advantage of any dietary subgroup studied.

为什么这很重要

Understanding this subgroup matters because the blanket label 'vegetarian' obscures meaningful differences in cardiovascular and longevity outcomes.

素食主义真的能延年益寿吗?这是一个谎言吗?

Pharmacologic Floor

定义

A pharmacologic floor is the concept of using targeted medications to set a minimum acceptable level for key risk factors—such as ApoB, blood pressure, or inflammation—ensuring that lifestyle-driven improvements are supplemented rather than replaced by drug therapy.

为什么这很重要

This strategy represents the 'best of both worlds' approach that combines fitness with precision medicine.

现代医学能拯救一个久坐不动的人吗?持续40年的三胞胎实验

磷脂转移蛋白(PLTP)

定义

Phospholipid Transfer Protein (PLTP) is a plasma protein that captures phospholipids shed from the surface of triglyceride-rich lipoproteins as they deliver their cargo, then transfers those phospholipids to nascent HDL particles, enabling them to mature.

为什么这很重要

It explains a key step in how HDL particles grow and why lipoprotein metabolism is more complex than a simple 'good cholesterol vs. bad cholesterol' picture.

胆固醇:它有什么用?

Photon-Counting CT (PCCT)

定义

A next-generation CT detector technology that registers individual X-ray photons rather than averaging their energy, yielding higher spatial resolution and reduced blooming artifact compared with conventional detectors; it is under evaluation for improving both calcium quantification and non-calcified plaque characterization.

为什么这很重要

Better imaging means fewer lesions missed, which is critical when deciding whether a fit athlete with a moderate score truly has stable disease.

Read: Coronary Calcium and Athletic Risk

Physiological Threshold

定义

The exercise intensity beyond which the body can no longer sustain aerobic energy production and begins to accumulate fatigue products rapidly, making it impossible to maintain that effort level; exceeding it early in a race causes premature collapse in pace.

为什么这很重要

Megdal describes starting below this threshold and building into record pace as the key tactical lesson he learned after multiple failed attempts.

彼得·梅格达尔 (Peter Megdal) 登上《戴德姆时报》

Phytosterol

定义

Phytosterols are the plant equivalents of cholesterol, found in nuts, seeds, and vegetable oils, and added to some margarines.

为什么这很重要

They block some cholesterol absorption and lower LDL by a few percent. A rare inherited condition causes them to build up dangerously, which is why they are not simply harmless in everyone.

阅读:seed oils 是否健康,是真是假?

压电1蛋白

定义

Piezo1 is a mechanosensitive ion channel protein found in arterial endothelial and smooth muscle cells that converts physical forces such as pressure and wall stretch into intracellular chemical signals, a process called mechanotransduction.

为什么这很重要

The article identifies Piezo1 as the sensor that detects the high blood pressures generated during intense exercise and triggers downstream changes—including increased biglycan production—that may promote lipoprotein retention.

Read: Do endurance sports help or hurt arteries?

Pill-in-the-Pocket (Class I Antiarrhythmics)

定义

An as-needed dosing strategy using Class I sodium-channel–blocking drugs such as flecainide or propafenone, taken only when an AF episode begins in order to restore sinus rhythm; athletes using this approach must avoid intense exercise until the drug has cleared (up to two days) because of the risk of pro-arrhythmic effects during adrenergic stress.

为什么这很重要

It offers a way to manage infrequent AF episodes without daily performance-limiting medication, but carries specific safety rules athletes must follow.

接受过治疗的心房颤动大师级运动员(50岁以上)的心血管风险管理与训练调整:专家报告

Pilosebaceous Unit

定义

The anatomical structure consisting of a hair follicle and its associated sebaceous (oil) gland; in acne vulgaris, excess sebum production, follicular keratin plugging, and bacterial activity within this unit trigger the inflammation that can ultimately scar the skin.

为什么这很重要

The article uses acne and its pilosebaceous pathology as the central analogy for explaining how an active inflammatory process can be cured while structural scars remain—a framework then applied directly to atherosclerosis.

Read: Can Heart Disease Be Cured?

匹伐他汀

定义

A statin notable for being highly potent per milligram, lowering LDL-C approximately 33–55% across its dose range of 1–16 mg/day and outperforming pravastatin at equivalent milligram doses in head-to-head studies.

为什么这很重要

Allows meaningful LDL reduction with a small pill dose, relevant for athletes seeking efficacy without high-dose statin exposure.

阅读:《运动员的胆固醇:如何在不影响竞技状态的情况下降低低密度脂蛋白(LDL)》(他汀类药物实用指南)

Plant-Based Diet

定义

A plant-based, or plant-predominant, diet is built mostly around vegetables, fruit, beans, whole grains, nuts, and seeds, with animal foods limited or absent.

为什么这很重要

These diets reliably lower LDL and ApoB, mostly by cutting saturated fat and adding fiber. Whether they do anything extra for arteries beyond that particle-lowering effect is an active and unsettled research question.

素食主义真的能延年益寿吗?这是一个谎言吗?

Plant-to-Animal Protein Ratio

定义

A measure of the proportion of dietary protein derived from plant sources (legumes, grains, nuts) relative to animal sources (meat, dairy, eggs); the article identifies a high plant-to-animal protein ratio as a key feature of the 'winning' whole-food, plant-dominant dietary pattern for cardiovascular protection.

为什么这很重要

Tracking this ratio rather than total protein intake may be a more practical cardiovascular risk-reduction target than simply counting grams of protein.

阅读:通过饮食治疗心脏病不仅是一种现代痴迷——它更是一种有数百万年进化历史支撑、并借助现代科学最先进手段的实践。

Plaque Burden Indices

定义

Quantitative imaging metrics—principally percent atheroma volume (PAV) and total atheroma volume (TAV)—that measure the total amount of plaque in a coronary segment independently of lumen size; because they are unaffected by remodeling, they are considered more reliable than lumen diameter for tracking therapeutic response.

为什么这很重要

Tracking plaque burden rather than lumen width gives a truer picture of whether treatment is working, especially when remodeling masks changes in lumen size.

Read: Reversal of Coronary Atherosclerosis: Mechanistic Insights from Human and Primate Studies

Plaque Calcification

定义

A process in which calcium phosphate crystals are deposited within atherosclerotic plaques, driven by osteogenic-like differentiation of vascular smooth muscle cells; calcified plaques are structurally stable but largely irreversible even when active disease is suppressed.

为什么这很重要

Plaque calcification explains why stopping heart disease does not erase all evidence of it—calcified lesions persist as 'scars,' which is central to the article's cure-versus-reversal distinction.

Read: Can Heart Disease Be Cured?

Plaque Chronicity

定义

The concept that calcification within atherosclerotic plaque reflects older, more stable disease that has undergone fibrous and calcium deposition over time, rather than active, vulnerable disease; it is why high calcium scores indicate cumulative long-term burden rather than imminent rupture risk.

为什么这很重要

It clarifies why calcified plaque is paradoxically more stable than soft plaque, even though a high calcium score still signals significant overall disease.

Read: LDL “BAD” Cholesterol: Apolipoprotein B, Imaging Resolution, and the Illusion of “Normal” Coronary Arteries at Age 60

Plaque Crystallization

定义

Plaque crystallization refers to the transient formation of cholesterol crystals within a plaque during the early phase of regression, documented in primate studies at around six months of cholesterol lowering before the crystals dissolve as the lipid pool further clears.

为什么这很重要

It helps explain why plaques may look temporarily more complex on imaging early in treatment before improving.

Read: Can heart disease be reversed?

斑块破裂

定义

The cracking, rupturing, or surface erosion of an atheromatous plaque that triggers local thrombus formation; in MINOCA, the plaque may be too small to cause ≥50% stenosis, and the resulting clot can dissolve or embolize before angiography, leaving an apparently open vessel.

为什么这很重要

Plaque disruption explains why a heart attack can occur and then leave 'clear' arteries on angiography minutes or hours later.

隐匿性梗死:MINOCA机制、诊断与管理的深入研究验证

斑块表型

定义

Plaque phenotype refers to the biological and structural characteristics of an atherosclerotic lesion — including the size of its lipid-rich necrotic core, fibrous cap thickness, degree of calcification, and inflammatory cell content — which together determine whether a plaque is stable or at high risk of rupturing.

为什么这很重要

Two plaques of identical size can carry very different risks; knowing the phenotype is what distinguishes a dangerous plaque from a stable one.

医生没有为你开具的心脏检查

斑块消退

定义

Plaque regression means existing plaque actually gets smaller, rather than just growing more slowly.

为什么这很重要

It is possible, and it has been photographed happening with intensive cholesterol lowering. But the changes are modest — usually a few percent of plaque volume. Beware anyone promising to melt your arteries clean.

阅读:已被证实唯一能消除动脉斑块的饮食(不是地中海饮食!)

斑块稳定

定义

Plaque stabilization is making an existing plaque less likely to crack open — thickening its cap, shrinking its greasy core, and calming the inflammation inside it.

为什么这很重要

This is probably the main reason cholesterol medicines start preventing heart attacks within months, long before any measurable amount of plaque has disappeared. Safer matters more than smaller.

Read: Exercise Doesn’t Erase Arterial Plaque – It Turns It to Stone!

Plaque Threshold

定义

The plaque threshold is the individual-specific cumulative level of atherogenic lipoprotein exposure at which enough lesion burden has accumulated to produce a clinically meaningful cardiovascular event such as a heart attack or stroke. Risk factors such as hypertension, diabetes, and smoking effectively lower this threshold, meaning events occur at a smaller cumulative exposure, while a metaboli…

为什么这很重要

It explains why two people with the same LDL level can have very different heart-attack risk depending on how long they have had that level and what other risk factors are present.

心脏病是一种选择吗?阻止斑块形成的‘零风险’秘诀

Plaque-Years

定义

Plaque-years is a measure of cumulative lifetime exposure to LDL cholesterol, calculated as the integral of LDL-C concentration over time (approximated as LDL-C × age), used to quantify the total atherogenic burden an artery wall has experienced. Research has identified heuristic thresholds—around 5,000 for low risk and above 14,000 for very high risk—that correspond to progressively greater prob…

为什么这很重要

It explains why someone with modest LDL but decades of exposure can still have high heart-attack risk, and why starting low early matters more than any single reading.

心脏病是一种选择吗?阻止斑块形成的‘零风险’秘诀

Platelets

定义

Platelets are small, anucleate cell fragments in the blood whose primary role is to clump together at sites of vascular injury to form a clot and stop bleeding; because they cannot synthesize new protein, aspirin's irreversible inhibition of their clotting enzyme lasts for the platelet's entire 7–10 day lifespan.

为什么这很重要

Understanding platelets explains why aspirin has such a lasting effect from a single daily dose and why you must stop taking it well before surgery.

每日阿司匹林究竟是在夺走你的生命还是在拯救你?最新科学研究怎么说。.

Plavix (Clopidogrel)

定义

A prescription antiplatelet drug that inhibits platelet aggregation by blocking the P2Y12 receptor; combining it with fibrinolytic supplements like nattokinase may amplify bleeding risk.

为什么这很重要

Knowing that nattokinase interacts with antiplatelet and anticoagulant drugs is critical safety information for anyone already on heart medications.

纳豆激酶与心血管斑块:人体研究的真实情况

Pleiotropic Effects

定义

In pharmacology, pleiotropic effects are actions of a drug that go beyond its primary intended mechanism; for incretin therapies, pleiotropic effects include anti-inflammatory activity, endothelial protection, and blood-pressure reduction that are independent of the drugs' primary glucose-lowering and weight-loss actions.

为什么这很重要

The article's central question — whether heart benefits come from weight loss or from direct vascular action — is precisely a debate about pleiotropy.

Read: Ozempic and Mounjaro: Saving Your Heart BEFORE the Scale Moves

Poiseuille's Law

定义

A fluid-dynamics principle stating that volumetric flow through a cylindrical tube is proportional to the fourth power of the tube's radius; in coronary physiology this means even a small increase in arterial diameter produces a disproportionately large gain in blood-flow capacity.

为什么这很重要

It quantifies why modest arterial widening from plaque regression or improved vasomotor tone matters enormously for athletic performance and cardiac oxygen delivery.

冠状动脉斑块消退、管腔悖论与运动员的血管重塑:整合药物与全食物植物性策略

Polyclonal Antibodies

定义

Polyclonal antibodies are a diverse mixture of immunoglobulins produced by many different B-cell clones, each recognizing a slightly different part of the same antigen; in xenosialitis, polyclonal anti-Neu5Gc antibodies attack Neu5Gc molecules incorporated into the vascular endothelium, driving chronic arterial inflammation.

为什么这很重要

A broad, multi-clone antibody response against vessel-wall antigens is harder to resolve than a single-target response, helping explain why xenosialitis causes persistent rather than self-limiting inflammation.

你的免疫系统在与你的牛排开战吗?

Polygenic Risk Score

定义

A polygenic risk score adds up the effects of many small genetic variants to estimate your inherited risk of a disease.

为什么这很重要

No single one of these variants means much. Together they can identify people whose risk is as high as someone with a well-known inherited cholesterol disorder, even though no single gene stands out.

心血管保护的遗传架构

多酚

定义

Polyphenols are a broad class of plant-derived compounds with antioxidant properties; extra virgin olive oil is particularly rich in them, and they are often cited as the reason EVOO may be more protective than refined olive oil, though trials measuring hard cardiovascular endpoints have not confirmed a meaningful clinical benefit.

为什么这很重要

They are frequently invoked to justify olive oil's health reputation, so understanding their evidential status prevents overclaiming.

阅读:seed oils 是否健康,是真是假?

Polyunsaturated Fatty Acids (PUFAs)

定义

Fatty acids containing two or more carbon-carbon double bonds; they include the omega-6 family (linoleic acid, dominant in most seed oils) and the omega-3 family (alpha-linolenic acid, EPA, DHA), and they lower LDL cholesterol when substituted for saturated fats.

为什么这很重要

PUFAs are the defining feature of seed oils, so understanding what makes them chemically and metabolically distinct from saturated or monounsaturated fats is central to the whole discussion.

阅读:seed oils 是否健康,是真是假?

Pooled Cohort Equations

定义

The Pooled Cohort Equations are the risk calculator the American College of Cardiology and American Heart Association currently recommend, estimating your ten-year odds of a heart attack or stroke from age, cholesterol, blood pressure, diabetes, and smoking status.

为什么这很重要

Like the Framingham score before it, this is a population-average tool — it has no way to account for coronary calcium, family history beyond a checkbox, or Lp(a), so it can substantially underestimate risk in people who don't resemble the population it was built on.

医生没有为你开具的心脏检查

Population-Attributable Risk

定义

Population-attributable risk (PAR) is the proportion of cases of a disease in a population that could theoretically be prevented if a given risk factor were eliminated, taking into account both how risky the factor is and how common it is. The article cites INTERHEART's estimate that the combined psychosocial factor had a PAR of roughly 32.5% for myocardial infarction.

为什么这很重要

PAR explains why a risk factor that seems moderate for any one individual can still account for a large share of heart attacks across a whole population.

Read: Does stress kill you and does meditation save you?

传送门理论

定义

The portal theory proposes that visceral fat is uniquely hazardous because it drains directly into the portal vein, exposing the liver to high concentrations of free fatty acids and pro-inflammatory cytokines before they reach the general circulation, thereby promoting hepatic insulin resistance and excess VLDL production.

为什么这很重要

This anatomical quirk explains why belly fat is metabolically more dangerous than fat stored elsewhere in the body.

阅读:为什么腹部脂肪比你想象的更危险

投资组合调整

定义

The Portfolio diet is a plant-based dietary pattern designed specifically to lower LDL cholesterol by combining several evidence-based food components—including soy protein, viscous fiber, plant sterols, and nuts—each of which independently lowers LDL, with additive effect when combined.

为什么这很重要

It is one of the named dietary patterns evaluated for both cholesterol lowering and cardiovascular event reduction in this review.

Read: What is the difference between Mediterranean and whole-food plant-based diets for heart disease?

Positive Remodeling

定义

An outward expansion of the arterial wall that accommodates growing atherosclerotic plaque while preserving the inner lumen diameter; the artery appears unobstructed on tests that only assess lumen narrowing, masking a structurally vulnerable plaque.

为什么这很重要

It explains why many people with dangerous plaque look 'clear' on conventional tests and why direct wall imaging is necessary.

一种无需手术透视心脏的新方法——预测心脏病发作的最佳途径

Positron Emission Tomography

定义

Positron emission tomography, or PET, uses a mildly radioactive tracer to show which tissues are metabolically busy.

为什么这很重要

In arteries it can highlight active inflammation or calcification happening right now, rather than the accumulated damage a CT shows. It is mostly a research tool at present.

体质好如何掩盖心脏病发作

餐后

定义

Postprandial means 'after a meal'; postprandial studies measure how the body—including blood vessels, lipid levels, and inflammatory markers—responds in the hours immediately following food consumption, rather than at a fasting baseline.

为什么这很重要

Olive oil's measurable stiffening of blood vessels occurs in the postprandial window, a finding that fasting-only measurements would miss entirely.

Read: Is Olive Oil Actually Healthy?

Postprandial Lipemia

定义

Postprandial lipemia is the surge of fat particles in your blood in the hours after eating a meal containing fat.

为什么这很重要

Most lipid panels are drawn fasting, so they miss this entirely. Yet arteries spend most of the day in the fed state, and an exaggerated post-meal surge may carry risk a fasting number never reveals.

Read: Pathophysiological Determinants of Atherosclerotic Regression: The Criticality of Ultra-Low-Fat Whole-Food Plant-Based Nutritional Protocols

Postprandial Thermogenesis

定义

The increase in energy expenditure that occurs after a meal as the body processes and metabolizes food; purified MCT oils rich in C8:0 and C10:0 produce a modestly greater postprandial thermogenic response than long-chain fats, an effect that has been incorrectly generalized to coconut oil in weight-loss marketing.

为什么这很重要

Understanding this term shows why MCT-based weight-loss research does not straightforwardly apply to cooking with coconut oil.

椰子油作为健康食品的神话:行业如何左右你的饮食!

Power Meter

定义

A power meter is a device fitted to a bicycle that measures the mechanical power output of the rider in watts, providing an objective and reproducible marker of athletic performance. In this article, a subtle but sustained drop in power output was the first clue that something was physiologically wrong before any clinical symptoms appeared.

为什么这很重要

Understanding how athletes can detect cardiovascular decline through performance data rather than classic symptoms is important for early diagnosis.

Read: Peter Megdal of curingheartdisease.com Interview

Power Output (Watts, Cycling)

定义

The mechanical work a cyclist produces, measured in watts, and used as a precise, objective indicator of exercise intensity independent of wind, gradient, or drafting conditions.

为什么这很重要

Megdal's 30-watt deficit on race day illustrates how heat and psychological stress can suppress cardiovascular performance even in a well-trained athlete.

Read: Peter Megdal gets second at National Championships

PPARα (Peroxisome Proliferator-Activated Receptor Alpha)

定义

PPARα is a nuclear receptor that regulates genes involved in fatty acid oxidation and inflammation; preliminary evidence suggests bempedoic acid may directly activate this receptor, adding complexity to the drug's mechanism of action beyond ATP-citrate lyase inhibition.

为什么这很重要

It signals that bempedoic acid's biology may be more multifaceted than currently labeled, with potential implications for its anti-inflammatory and lipid effects.

雌激素能保护女性动脉免受斑块形成吗?

普伐他汀

定义

A moderate-intensity statin that lowers LDL-C roughly 22–32% across common licensed doses; because it is not metabolized through the CYP3A4 pathway and is hydrophilic, it is often preferred when muscle tolerability is a concern.

为什么这很重要

Frequently chosen as a starting statin for athletes specifically because of its relatively favorable muscle-symptom profile.

阅读:《运动员的胆固醇:如何在不影响竞技状态的情况下降低低密度脂蛋白(LDL)》(他汀类药物实用指南)

Pre-Hypertension

定义

A blood pressure category, defined by JNC 7 as systolic 120–139 mmHg or diastolic 80–89 mmHg, indicating elevated pressure that is not yet classified as hypertension but still carries increased cardiovascular risk.

为什么这很重要

The Kim 2008 nattokinase trial enrolled people in this category, so recognizing the term clarifies which patients showed a blood-pressure benefit.

纳豆激酶与心血管斑块:人体研究的真实情况

Pre-Test Probability

定义

The estimated likelihood that a patient has a particular condition before a diagnostic test is performed, based on symptoms, risk factors, and clinical context; in CAC interpretation, a symptomatic patient has a higher pre-test probability of coronary disease, so a zero score still leaves meaningful residual risk.

为什么这很重要

Pre-test probability determines how much reassurance a zero CAC score actually provides in any individual patient.

零的力量:没有钙 – 没有风险?

精准心脏病学

定义

Precision cardiology is an approach to cardiovascular prevention and treatment that moves beyond population-average risk estimates by integrating advanced biomarkers, genetic information, imaging, and individual biological data to tailor risk assessment and therapy to each patient's specific disease biology.

为什么这很重要

It explains the shift from 'your ten-year risk is X%' to actually measuring what is happening inside your arteries and blood right now.

医生没有为你开具的心脏检查

PREDIMED

定义

PREDIMED randomly assigned thousands of high-risk Spanish adults to a Mediterranean diet with extra olive oil, the same diet with extra nuts, or a low-fat control diet.

为什么这很重要

It is the most influential dietary trial in cardiology and reported roughly 30 percent fewer major events. It was retracted and republished after randomization problems were found at some sites, with similar conclusions.

阅读:已被证实唯一能消除动脉斑块的饮食(不是地中海饮食!)

Premature Coronary Artery Disease

定义

Premature coronary artery disease is coronary atherosclerosis that causes a clinically significant event — such as a heart attack or revascularization — before age 55 in men or age 65 in women; events in relatives at these ages are the primary signal used to define high inherited cardiac risk.

为什么这很重要

The age threshold distinguishes a routine family history from one that implies a genetic loading requiring more aggressive screening.

Read: The Heart Health App That Finally Asks the Right Question

Preparticipation Screening

定义

Preparticipation screening is the systematic medical evaluation of athletes before they compete, designed to identify cardiovascular conditions that increase the risk of sudden cardiac death; it typically includes a history and physical examination, and in some countries or programs an ECG.

为什么这很重要

It is the primary organised strategy for identifying at-risk young athletes before a fatal event occurs, but its ability to detect all dangerous conditions is limited.

如何避免英年早逝

PREVENT 方程

定义

The PREVENT (Predicting Risk of Cardiovascular Disease EVENTs) equations are a cardiovascular risk model adopted in the 2026 ACC/AHA guidelines that estimate both 10-year and 30-year lifetime risk of ASCVD, replacing the older Framingham-based Pooled Cohort Equations and enabling earlier risk stratification beginning at age 30.

为什么这很重要

Understanding which risk model your doctor uses explains why two patients with similar cholesterol numbers can receive very different treatment recommendations.

为什么你‘正常’的胆固醇其实是一个警告信号

Preventive Cardiologist

定义

A preventive cardiologist is a physician subspecialist focused on identifying and modifying cardiovascular risk factors before a first event occurs, using advanced lipid testing, imaging, and genetic risk assessment rather than waiting for symptomatic disease.

为什么这很重要

The article suggests high-IHC individuals may need referral to this specialist rather than routine primary-care management.

Read: The Heart Health App That Finally Asks the Right Question

Primary Percutaneous Coronary Intervention (Primary PCI)

定义

Primary PCI is emergency angioplasty performed as the immediate treatment for a heart attack — physically reopening the blocked coronary artery with a balloon and usually a stent, rather than using clot-dissolving drugs. It is currently the preferred acute treatment in hospitals equipped to perform it quickly.

为什么这很重要

Primary PCI is the reason in-hospital death after a heart attack has fallen to roughly 4–7% in high-income countries, making it the cornerstone of modern acute cardiac rescue.

心血管疾病史

初级预防

定义

Primary prevention is treating someone who has never had a heart attack or stroke, to keep the first one from happening.

为什么这很重要

The bar for treatment is higher here than for someone who already has known disease, because the benefit per person is smaller. This distinction is why aspirin advice differs so sharply between the two groups.

每日阿司匹林究竟是在夺走你的生命还是在拯救你?最新科学研究怎么说。.

Primordial Prevention

定义

Primordial prevention is a strategy aimed at stopping the development of cardiovascular risk factors in the first place—rather than treating risk factors or existing disease—by keeping atherogenic exposures near zero from birth or early life. It is distinguished from primary prevention, which targets people who already have risk factors but no clinical disease.

为什么这很重要

It represents the furthest upstream approach to eliminating heart disease: preventing the conditions that cause the disease before they ever appear.

心脏病是一种选择吗?阻止斑块形成的‘零风险’秘诀

PRISMA 2020

定义

PRISMA 2020 (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) is a standardized reporting guideline that specifies how a systematic review should document its search strategy, study selection, and risk-of-bias assessment; the article explicitly notes it did not follow PRISMA, which is a stated limitation of its narrative format.

为什么这很重要

Knowing that a review did not follow PRISMA helps you calibrate how systematically its evidence was gathered and whether important studies might have been missed.

年轻时(20多岁和30多岁)胆固醇高,即使日后降下来了,以后也会引发心脏病发作吗?

普里蒂金计划

定义

An intensive cardiac rehabilitation program combining a very low-fat, high-fiber diet with structured exercise, developed by Nathan Pritikin; clinical studies have shown it improves blood flow, lipid profiles, and cardiac symptoms in patients with established heart disease.

为什么这很重要

Understanding named lifestyle programs helps readers compare the evidence behind each approach to reversing heart disease.

Read: Can Diet Really Reverse Heart Disease?

Pro-Thrombotic Sensitizer

定义

A pro-thrombotic sensitizer is an agent that does not directly initiate blood clot formation but lowers the activation threshold of platelets, making them hyperreactive to normal clotting stimuli such as thrombin or collagen; TMAO acts as a pro-thrombotic sensitizer by promoting calcium release from the platelet dense tubular system.

为什么这很重要

This mechanism explains how elevated TMAO increases heart attack and stroke risk even without directly blocking an artery.

牛排中的隐形毒素:肠道细菌如何引发心脏病

前药

定义

A prodrug is a pharmacologically inactive compound that is converted into its active form by metabolic processes after administration; bempedoic acid is a prodrug activated specifically in the liver, which is why it avoids causing muscle side effects seen with statins.

为什么这很重要

Understanding that bempedoic acid is a prodrug explains why it is an option for patients who cannot tolerate statins due to muscle symptoms.

雌激素能保护女性动脉免受斑块形成吗?

PROMISE Trial

定义

A large randomized trial that evaluated CT angiography versus functional stress testing in symptomatic patients with stable chest pain; findings cited here showed that 16.5% of zero-CAC participants had non-obstructive coronary artery disease and 1.5% had obstructive disease, illustrating residual risk despite a zero calcium score.

为什么这很重要

PROMISE data directly challenge the assumption that a zero CAC score rules out significant coronary disease in symptomatic patients.

零的力量:没有钙 – 没有风险?

Proprotein Convertase

定义

Proprotein convertases are enzymes that activate other proteins by cutting them. PCSK9 belongs to this family — its full name is proprotein convertase subtilisin/kexin type 9.

为什么这很重要

The name explains the abbreviation. PCSK9 is the ninth member of the family to be identified, and the only one that turned out to be a major cholesterol target.

Read: Cholesterol: How Low is Too Low?

前瞻性队列

定义

A prospective cohort enrolls healthy people, records their characteristics, and then waits to see what happens.

为什么这很重要

Measuring exposures before anyone gets sick avoids the problem of asking sick people to remember their old habits. It still cannot prove cause, because participants chose their own behavior.

Read: What is the difference between Mediterranean and whole-food plant-based diets for heart disease?

Prospective Cohort Study

定义

A study design in which a group of participants is enrolled and followed forward in time, with their diet and other exposures recorded before disease outcomes occur; the 13-study meta-analysis cited in the article pooled data from over 844,000 participants followed in this way.

为什么这很重要

Most of the human evidence linking diet to cardiovascular disease comes from this design, so understanding it clarifies the nature and limitations of the data.

Read: Q&A: Can Your Love for Red Meat Be Dangerous?

Prospective ECG Triggering

定义

A CAC scan acquisition technique in which X-ray exposure is synchronized to a specific phase of the cardiac cycle—typically diastole—using the electrocardiogram signal, minimizing motion blur so that small calcified lesions can be accurately detected and measured.

为什么这很重要

Without precise cardiac gating, motion artifact would make it impossible to reliably quantify millimeter-scale calcium deposits.

Read: Coronary Calcium and Athletic Risk

Prostacyclin (PGI₂)

定义

Prostacyclin is a chemical produced by the cells lining blood vessels that opposes platelet aggregation and keeps vessels dilated; unlike platelets, vessel-lining cells can regenerate their enzymes, so low-dose aspirin spares prostacyclin production while still blocking platelet-derived TxA₂.

为什么这很重要

The balance between TxA₂ and prostacyclin explains why dose matters—higher aspirin doses suppress the body's own protective chemistry without adding clot-prevention benefit.

每日阿司匹林究竟是在夺走你的生命还是在拯救你?最新科学研究怎么说。.

Proteoglycan Binding

定义

Proteoglycan binding is the electrochemical interaction by which positively charged lysine- and arginine-rich regions of ApoB latch onto the negatively charged glycosaminoglycan chains of intimal matrix proteins such as biglycan, versican, perlecan, and decorin. This binding dramatically prolongs the residence time of a lipoprotein particle within the artery wall, making it far more susceptible t…

为什么这很重要

It explains the molecular 'stickiness' that traps cholesterol particles in artery walls and why fewer particles in circulation means fewer particles caught.

心脏病是一种选择吗?阻止斑块形成的‘零风险’秘诀

Proteoglycan Retention

定义

Proteoglycans are sticky sugar-and-protein molecules in the artery wall. ApoB particles bind to them and get held in place.

为什么这很重要

This is the trapping step. A particle that enters and leaves again causes no harm; one that sticks starts a plaque. It explains why the number of particles passing through matters so much.

Read: Which Came First – the Lipid or the Inflammation? Apolipoprotein B and the Chicken-and-Egg Problem of Atherogenesis

蛋白质稳态

定义

The cellular maintenance of a stable, functional protein pool through the coordinated balance of protein synthesis, folding, and degradation pathways including autophagy and the ubiquitin-proteasome system; its impairment with age allows damaged proteins to accumulate and is linked to neurodegeneration and other age-related diseases.

为什么这很重要

Proteostasis explains at a molecular level why cellular 'housekeeping' declines with age and why strategies that activate autophagy are relevant to longevity.

Read: Stop Wasting Away as You Age…the Emerging Science of Antiaging!

Proximal Coronary Segment

定义

The proximal coronary segment refers to the portion of a coronary artery closest to its origin from the aorta; plaques in these segments are considered highest risk because blockages there can cut off blood supply to the largest area of heart muscle.

为什么这很重要

The Master@Heart study's finding that lifelong athletes had more non-calcified plaques specifically in proximal segments is what made its results particularly concerning for clinicians.

巅峰体能与隐形钙化:运动员的斑块积聚悖论

Pseudogenization

定义

Pseudogenization is the mutational inactivation of a gene so that it can no longer produce a functional protein; the CMAH gene in humans underwent pseudogenization via a frameshift deletion, leaving an intact but nonfunctional gene sequence inherited by all modern humans.

为什么这很重要

Because the CMAH gene is pseudogenized rather than absent, humans carry the molecular 'scar' of a lost metabolic pathway that once made them susceptible to ancient malaria.

你的免疫系统在与你的牛排开战吗?

肺静脉隔离术

定义

The most common catheter ablation technique for AF, in which the four pulmonary veins — the usual sources of the triggering electrical impulses — are electrically disconnected from the rest of the left atrium.

为什么这很重要

The key trial cited (Mandsager et al.) specifically studied outcomes of pulmonary vein isolation in athletes.

问答:房颤、耐力训练与消融术——运动员需要了解的知识

Pulse Wave Velocity

定义

Pulse wave velocity measures how fast the pressure wave from each heartbeat travels along your arteries. Stiffer arteries carry it faster.

为什么这很重要

It is the standard measure of arterial stiffness and one of the better estimates of how old your blood vessels behave, independent of your birthday.

从子宫到逆转:消除一生的动脉损伤

PURE Study

定义

A large prospective cohort study (Prospective Urban Rural Epidemiology) that enrolled over 155,000 individuals from 21 countries spanning low-, middle-, and high-income settings to examine the contribution of modifiable risk factors to cardiovascular disease and mortality; it found that traditional risk factors account for the large majority of cardiovascular events worldwide.

为什么这很重要

The PURE study underpins the article's argument that heart disease is largely preventable, strengthening the case for primordial prevention.

Read: The Cholesterol Breakthrough: From Daily Pills to Twice-a-Year Shots

Pyridoxal-5-Phosphate (P-5-P)

定义

The active coenzyme form of vitamin B-6 that is required by cystathionine β-synthase to carry out the transsulfuration of homocysteine to cystathionine, the irreversible disposal route.

为什么这很重要

It clarifies why B-6 is part of homocysteine-lowering regimens but also why its contribution is minimal unless a true deficiency is present.

补充L-甲基叶 folate + 活性B族维生素降低同型半胱氨酸能否帮助预防动脉粥样硬化并减少斑块?

Pyroptosis

定义

Pyroptosis is a form of inflammatory programmed cell death, distinct from apoptosis, that is triggered by activation of inflammasome complexes such as NLRP3; in the context of TMAO, it refers to the death of oligodendrocytes in the brain driven by ROS-NLRP3 signaling, contributing to demyelination and cognitive decline.

为什么这很重要

Understanding pyroptosis explains one mechanism by which high TMAO levels may accelerate neurodegenerative diseases like Alzheimer's.

牛排中的隐形毒素:肠道细菌如何引发心脏病

返回顶部

Q

Qualitative Fat Substitution Model

定义

The qualitative fat substitution model is a dietary strategy endorsed by bodies such as the AHA that focuses on replacing saturated and trans fatty acids with poly- and monounsaturated fats while permitting total fat intakes of 30–45% of calories, as embodied in the Mediterranean dietary pattern.

为什么这很重要

It represents the mainstream alternative to ultra-low-fat approaches and underpins most current heart-health dietary guidelines.

阅读:已被证实唯一能消除动脉斑块的饮食(不是地中海饮食!)

定量冠状动脉造影术

定义

Quantitative coronary angiography is a way of measuring artery narrowing precisely from angiogram images, rather than eyeballing it.

为什么这很重要

Early studies of whether diet or drugs could reverse heart disease relied on this method. It measures the open channel only, which is why its findings need careful interpretation.

阅读:已被证实唯一能消除动脉斑块的饮食(不是地中海饮食!)

Quantitative Coronary Arteriography

定义

A computer-assisted technique that measures the diameter of coronary artery segments from X-ray angiographic images, providing objective, numerical data on the degree of stenosis and plaque burden over time.

为什么这很重要

This was the imaging tool used in the Ornish Lifestyle Heart Trial to confirm that plaques actually shrank, making it the evidentiary backbone of claims that atherosclerosis can be reversed.

Read: Can Heart Disease Be Cured?

定量脂肪范式

定义

The quantitative fat paradigm holds that the total amount of dietary fat—not just its type—determines whether atherosclerotic plaque can regress, with the critical threshold set below 10% of daily calories; this contrasts with the qualitative fat substitution model, which focuses on replacing saturated fats with unsaturated ones while permitting higher total fat intakes.

为什么这很重要

Understanding this distinction explains why some dietary approaches are linked to plaque regression while others only slow progression.

阅读:已被证实唯一能消除动脉斑块的饮食(不是地中海饮食!)

Quartile

定义

One of four equal groups into which a population is divided when ranked by a measured variable; the article reports that individuals in the lowest fitness quartile had dramatically higher mortality than those in higher quartiles.

为什么这很重要

Understanding quartile comparisons helps readers interpret the magnitude of the fitness–mortality relationship described in the article.

Read: VO₂ max: the determinant of Health and Longevity?

Quasi-Randomized Trial

定义

A quasi-randomized trial is a study that uses an allocation method that is not purely random—such as assigning whole households or clinics to the same group—making it less reliable than a properly randomized controlled trial because systematic differences between groups can bias the results; after its randomization problems were revealed, PREDIMED was reclassified as quasi-randomized.

为什么这很重要

The downgrade of PREDIMED from a true RCT to a quasi-randomized trial directly weakens the evidentiary foundation for olive oil's cardiac benefits.

Read: Is Olive Oil Actually Healthy?

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R

Randomization

定义

Randomization is the process of assigning trial participants to treatment or control groups by chance, ensuring that known and unknown confounding factors are evenly distributed; when randomization fails—as auditors found occurred in PREDIMED—the groups may differ in ways that distort the apparent treatment effect.

为什么这很重要

Proper randomization is the foundation of a trustworthy clinical trial; its failure in PREDIMED is why that study's pro-olive-oil findings must be treated with caution.

Read: Is Olive Oil Actually Healthy?

随机对照试验

定义

A randomized controlled trial assigns people to a treatment or a comparison group purely by chance, then follows both groups.

为什么这很重要

Randomizing is the whole trick. It means the two groups should be alike in every way except the treatment, so any difference in outcome can fairly be blamed on the treatment itself. It is the strongest evidence medicine has.

每日阿司匹林究竟是在夺走你的生命还是在拯救你?最新科学研究怎么说。.

Rapamycin

定义

A pharmacologic inhibitor of mTORC1 that reproducibly extends lifespan and healthspan in multiple model organisms, including mice, even when started late in life; it is used experimentally to study the role of mTOR in aging, though its clinical use in healthy humans for longevity remains investigational.

为什么这很重要

Rapamycin is one of the most studied potential longevity drugs and illustrates why researchers target the mTOR pathway to slow aging.

Read: Stop Wasting Away as You Age…the Emerging Science of Antiaging!

Rate-Pressure Product (RPP)

定义

Rate-pressure product is the mathematical product of heart rate and systolic blood pressure, used as a non-invasive index of myocardial oxygen demand. Because trained athletes achieve high external work at a lower RPP than untrained individuals, their ischemic threshold may not be reached until near-maximal effort.

为什么这很重要

It explains why an athlete's efficient heart can silently tolerate a significant blockage at everyday intensities but become vulnerable at peak exertion.

运动如何阻断疼痛:运动员心脏的致命秘密

Ratio of Hazard Ratios (RHR)

定义

A comparison of the hazard ratio for a given exposure (such as smoking) in one group (women) versus another (men), used to quantify sex-specific differences in risk; an RHR greater than 1.0 indicates the exposure is relatively more harmful in the first group.

为什么这很重要

It reveals that smoking is disproportionately dangerous for women's hearts, arguing against a one-size-fits-all approach to prevention.

载脂蛋白B、脂蛋白(a)与C反应蛋白在动脉粥样硬化进展中的综合动力学

Recanalization

定义

Recanalization is the restoration of blood flow through a vessel that was previously completely or severely blocked, either spontaneously or in response to treatment; in the context of atherosclerosis regression, it describes the reopening of an occluded coronary artery through aggressive lipid lowering and lifestyle change rather than mechanical intervention.

为什么这很重要

It is the medical term for the 'impossible' reversal at the heart of Peter's story.

健美、迅捷且险些丧命:世界级自行车手如何发现隐匿性心脏病

受体缺陷型纯合子家族性高胆固醇血症

定义

Receptor-defective HoFH describes LDLR genotypes that retain 2–25% of normal receptor activity, resulting in moderately lower untreated LDL-C (300–500 mg/dL) and a somewhat slower disease course than the receptor-negative form, though still associated with premature cardiovascular disease.

为什么这很重要

The distinction between receptor-negative and receptor-defective status explains the wide variation in age of first heart attack among HoFH patients.

Read: Children With 60-Year-Old Arteries: The Extreme Reality of HoFH

受体阴性纯合子家族性高胆固醇血症

定义

Receptor-negative HoFH refers to the most severe LDLR genotype, in which patients retain less than 2% of normal LDL receptor activity, leaving the liver almost completely unable to remove LDL particles from the circulation and producing the highest cholesterol levels and earliest cardiovascular events seen in the condition.

为什么这很重要

Knowing receptor status predicts how aggressively and urgently treatment must begin in an HoFH patient.

Read: Children With 60-Year-Old Arteries: The Extreme Reality of HoFH

重新分类

定义

In cardiovascular risk assessment, reclassification refers to the process by which an additional test — such as a CAC scan or ApoB measurement — moves a patient from one risk category to another, prompting a change in treatment decisions that a standard risk calculator alone would not have triggered.

为什么这很重要

It quantifies how often a new test actually changes what a doctor does for a patient, which is the practical test of whether the test is worth ordering.

医生没有为你开具的心脏检查

红曲米

定义

A dietary supplement made from rice fermented with Monascus purpureus that naturally contains monacolin K, a compound chemically identical to the prescription statin lovastatin; it lowers LDL cholesterol through the same HMG-CoA reductase pathway as pharmaceutical statins.

为什么这很重要

Because its active ingredient is essentially an unregulated statin, red yeast rice carries both the benefits and risks of statin therapy, including variable potency between products.

纳豆激酶与心血管斑块:人体研究的真实情况

REDUCE-IT Trial

定义

A large randomized trial of 8,179 high-risk, statin-treated patients assigned to icosapent ethyl 4 g/day or mineral oil placebo; it reported a 25% relative risk reduction in major cardiovascular events and a number needed to treat of 21 over a median of 4.9 years.

为什么这很重要

REDUCE-IT is the pivotal trial behind Vascepa's cardiovascular indication and the center of ongoing scientific debate about fish oil therapy.

Read: Heart Disease and Fish Oil

Reductionist Nutrient Analysis

定义

An approach to nutrition science that studies individual nutrients or food components in isolation rather than examining whole dietary patterns; Campbell critiques this framework, arguing that nutrients interact synergistically and that isolating one compound (such as protein) cannot capture the full health effect of a diet.

为什么这很重要

Understanding this methodological debate helps explain why two credentialed scientists looking at similar data reach opposite conclusions.

Read: The Protein Debate

Regression (Coronary Artery)

定义

A measurable reduction in the size or severity of atherosclerotic plaque within a coronary artery, documented by imaging or angiography; the opposite of progression.

为什么这很重要

Regression is the scientific standard used to judge whether a diet or drug has actually reversed—not merely slowed—heart disease.

Read: Can Diet Really Reverse Heart Disease?

Relation Coefficient

定义

The relation coefficient (R) is the numerical weight assigned to a family member in the Inherited Hazard Coefficient formula based on degree of biological relatedness: 0.5 for first-degree relatives such as parents and siblings, and 0.25 for second-degree relatives such as grandparents and aunts and uncles.

为什么这很重要

It reflects the proportion of genes shared with a given relative and explains why a sibling's heart attack is weighted twice as heavily as a grandparent's.

Read: The Heart Health App That Finally Asks the Right Question

相对风险

定义

Relative risk compares two groups: this group had 30 percent fewer heart attacks than that group.

为什么这很重要

It is the number used in almost every headline, and it can be deeply misleading on its own. Thirty percent off a large risk is meaningful. Thirty percent off a tiny risk is almost nothing. Always ask what it is 30 percent of.

每日阿司匹林究竟是在夺走你的生命还是在拯救你?最新科学研究怎么说。.

再甲基化

定义

One of two metabolic pathways that clear homocysteine from the blood, converting it back to methionine using 5-methyltetrahydrofolate as the methyl donor and vitamin B-12 as a cofactor; this route recycles homocysteine rather than disposing of it permanently.

为什么这很重要

This is why folate and B-12 — not B-6 — are the vitamins that reliably lower a fasting homocysteine level.

补充L-甲基叶 folate + 活性B族维生素降低同型半胱氨酸能否帮助预防动脉粥样硬化并减少斑块?

残余胆固醇

定义

Remnant cholesterol is the cholesterol carried in the leftovers of triglyceride-rich particles, after they have dropped off most of their fat.

为什么这很重要

These leftovers are small enough to get into artery walls and are thought to be particularly good at causing trouble. They are a major reason people with high triglycerides carry extra risk that LDL alone does not capture.

为什么载脂蛋白B(ApoB)很重要?

Renin–Angiotensin System (RAS) Blockers

定义

A class of medications—including ACE inhibitors and angiotensin receptor blockers—that reduce blood pressure and cardiac remodeling by interrupting the hormonal cascade that regulates vascular tone and fluid balance; observational data suggest they are associated with better outcomes in MINOCA patients.

为什么这很重要

RAS blockers represent one of the few medication classes shown in registry data to improve prognosis after a MINOCA event.

隐匿性梗死:MINOCA机制、诊断与管理的深入研究验证

Repatha (Evolocumab)

定义

A brand-name PCSK9 inhibitor — a monoclonal antibody given by injection — that blocks the protein PCSK9, preventing it from degrading LDL receptors and thereby dramatically lowering LDL cholesterol, often by 50–60% on top of statin therapy.

为什么这很重要

Knowing what Repatha is clarifies how the author achieved an LDL of 25 mg/dL, a level far below what diet or statins alone typically reach.

资深运动员的心脏病:我是如何逆转动脉阻塞并在65岁打破世界纪录的

Replacement Dynamics

定义

Replacement dynamics refers to the statistical principle that a food's apparent health benefit may reflect what it displaces in the diet rather than any intrinsic property; in olive oil research, much of the observed cardiovascular benefit disappears when olive oil is compared against other plant oils rather than against butter or animal fats.

为什么这很重要

Understanding replacement dynamics prevents you from mistaking 'better than butter' for 'independently protective.'

Read: Is Olive Oil Actually Healthy?

残余心血管风险

定义

The continuing probability of major cardiovascular events that remains even after recognized risk factors such as LDL cholesterol and blood pressure have been brought under control, attributable to persistent calcification, arterial stiffness, low-grade inflammation, and incomplete plaque stabilization.

为什么这很重要

Residual risk clarifies why achieving a functional 'cure' of active atherosclerosis does not eliminate all future cardiovascular danger, a nuance the article explicitly addresses.

Read: Can Heart Disease Be Cured?

Residual Inflammatory Risk

定义

Residual inflammatory risk refers to the persistent elevation of cardiovascular event rates in patients who have already achieved guideline-recommended LDL-C targets but continue to have elevated inflammatory markers such as hsCRP; it represents a second, parallel pathway of atherogenesis that lipid-lowering alone does not address.

为什么这很重要

It explains why some people still have heart attacks despite 'good' cholesterol numbers, and why anti-inflammatory treatments matter.

健美、迅捷且险些丧命:世界级自行车手如何发现隐匿性心脏病

剩余风险

定义

Residual risk is the risk that remains after you have done the obvious things — cholesterol treated, blood pressure controlled, not smoking.

为什么这很重要

It comes from sources like Lp(a), ongoing inflammation, insulin resistance, and kidney disease. Recognizing it is what pushes doctors to look past the standard checklist when someone keeps having events anyway.

Read: Which Came First – the Lipid or the Inflammation? Apolipoprotein B and the Chicken-and-Egg Problem of Atherogenesis

力量训练

定义

Resistance training is working your muscles against a load — weights, bands, or your own body weight.

为什么这很重要

It was long treated as separate from heart health, something for building muscle rather than protecting arteries. That view has shifted. It improves blood pressure, blood sugar, and body composition, and it protects the muscle that aging otherwise takes away.

Read: Can pumping iron help your pumping heart?

Response-to-Retention Hypothesis

定义

The response-to-retention hypothesis is the leading mechanistic account of early atherosclerosis, holding that the initiating event is the binding and trapping of apoB-containing lipoprotein particles to proteoglycans in the arterial intima, before inflammation or foam cell formation occurs.

为什么这很重要

It explains why particle count over time — rather than cholesterol cargo — is considered the most direct driver of plaque development.

载脂蛋白B:更长、更高、更糟

反应-保持模型

定义

The response-to-retention model holds that atherogenesis begins when ApoB-containing lipoproteins cross the endothelial barrier and become trapped by proteoglycans in the arterial intima, triggering oxidative modification, immune cell recruitment, foam-cell formation, and eventual plaque development.

为什么这很重要

It is the mechanistic foundation for why high particle counts — measured by ApoB — drive heart disease regardless of family history.

基因好能战胜血脂差吗?

Retention Hypothesis

定义

The response-to-retention hypothesis holds that atherosclerosis begins when ApoB particles are retained in the artery wall, with inflammation following as a consequence.

为什么这很重要

It is the organizing idea behind modern prevention. It settles the chicken-and-egg question by putting the particle first: no retained particles, no plaque, however much inflammation is present.

健美、迅捷且险些丧命:世界级自行车手如何发现隐匿性心脏病

Retraction

定义

A retraction is a formal withdrawal of a published scientific paper by its authors or journal, typically because serious errors in design, data, or reporting undermine its conclusions; PREDIMED was retracted in 2018 after its randomization procedure was found to be compromised for roughly 21% of participants, then republished with a corrected statistical analysis.

为什么这很重要

The retraction of PREDIMED—the most cited olive oil trial—is a key reason the evidence for olive oil's independent benefit is weaker than commonly portrayed.

Read: Is Olive Oil Actually Healthy?

血运重建术

定义

Revascularization is a medical or surgical procedure—such as coronary artery bypass grafting or percutaneous coronary intervention—performed to restore blood flow through a blocked or narrowed coronary artery, addressing the physical obstruction rather than the underlying atherogenic process.

为什么这很重要

The article contrasts revascularization with dietary regression to make the point that conventional treatments manage symptoms while dietary intervention may address the root cause.

阅读:已被证实唯一能消除动脉斑块的饮食(不是地中海饮食!)

揭幕匾额

定义

A peer-reviewed study evaluating AI-enabled automated quantitative plaque analysis on coronary CT angiography, supporting the use of machine-learning algorithms to measure total plaque burden more granularly than a single Agatston calcium sum.

为什么这很重要

This research points toward a future where software—not just a radiologist's eye—catches soft plaque that a standard calcium score would miss entirely.

Read: Coronary Calcium and Athletic Risk

反转

定义

REVERSAL compared moderate and intensive statin therapy, using intravascular ultrasound to measure what happened to coronary plaque.

为什么这很重要

Plaque kept growing on the moderate dose and stopped on the intensive one. It was an early demonstration that how far you lower LDL changes the disease itself, not just the risk statistics.

阅读:已被证实唯一能消除动脉斑块的饮食(不是地中海饮食!)

反向因果关系

定义

Reverse causation is when the arrow points the other way — the illness caused the exposure rather than the exposure causing the illness.

为什么这很重要

It explains several persistent myths. Low cholesterol appears linked to cancer partly because early undiagnosed cancer lowers cholesterol, and non-drinkers look unhealthy partly because some quit drinking due to illness.

胆固醇大谎言:揭露饮食行业的有组织否认

胆固醇逆向转运

定义

Reverse cholesterol transport is the process of moving cholesterol out of tissues, including artery walls, and back to the liver for disposal. HDL particles do the hauling.

为什么这很重要

How well this system works appears to matter more than how much HDL you have. That is likely why drugs that simply raised HDL numbers failed to prevent heart attacks.

胆固醇:它有什么用?

Reverse Glagov Phenomenon

定义

The observation that during plaque regression the external elastic membrane contracts rather than expanding, the opposite of the compensatory outward remodeling seen during plaque progression; it means lumen caliber may paradoxically decrease as treatment succeeds in reducing plaque volume.

为什么这很重要

Understanding this phenomenon prevents the mistaken assumption that a stable or narrowing lumen means treatment has failed.

Read: Reversal of Coronary Atherosclerosis: Mechanistic Insights from Human and Primate Studies

逆向重构

定义

The inward movement of the external elastic membrane that occurs as plaque burden decreases, returning the artery toward its original, smaller caliber rather than enlarging the lumen; it is the principal explanation for the lumen paradox.

为什么这很重要

It explains why a successfully treated artery may look the same or slightly smaller on a scan even as its walls become safer and more stable.

冠状动脉斑块消退、管腔悖论与运动员的血管重塑:整合药物与全食物植物性策略

Rhabdomyolysis

定义

Rhabdomyolysis is the rapid breakdown of skeletal muscle tissue that releases cellular contents — including myoglobin — into the bloodstream; a key warning sign is dark tea- or cola-colored urine, and if untreated it can cause acute kidney failure.

为什么这很重要

Although rare with modern statins, rhabdomyolysis is the most dangerous form of drug-related muscle injury and requires prompt medical attention.

我应该服用降胆固醇药吗?当然应该。.

Rhesus Macaque

定义

Rhesus macaques (Macaca mulatta) are Old World monkeys widely used as the primary animal model in atherosclerosis research because, under a high-cholesterol diet, they shift toward an ApoB-dominant lipoprotein profile resembling human hypercholesterolemia and develop advanced coronary plaques with fibrous caps, necrotic cores, intraplaque hemorrhage, and calcification.

为什么这很重要

Understanding why primate experiments are considered strong evidence helps readers judge how confidently findings translate to human heart disease.

Read: Can heart disease be reversed?

Rheumatoid Arthritis

定义

Rheumatoid arthritis is an autoimmune disease in which the immune system attacks the joints.

为什么这很重要

The inflammation is not confined to joints. People with it develop cardiovascular disease earlier and more often than their standard risk factors predict, so guidelines treat it as a risk enhancer.

Read: Heart Disease and Fish Oil

Rho GTPases (RhoA, Rac1, Cdc42)

定义

Rho GTPases are a family of intracellular molecular switches — including RhoA, Rac1, and Cdc42 — that cycle between active and inactive states to regulate cytoskeletal dynamics, cell migration, and endothelial permeability, thereby influencing how readily lipoprotein particles enter and are retained in the artery wall.

为什么这很重要

They represent the 'local gate' that determines arterial vulnerability, so systemic ApoB levels alone do not fully explain who develops plaque.

胆固醇:它有什么用?

Rhythm Control

定义

A treatment strategy aimed at restoring and maintaining normal sinus rhythm, as opposed to rate control, which simply slows the heart rate during AF; catheter ablation is the most invasive rhythm-control approach.

为什么这很重要

The article contrasts rhythm-control durability in athletes versus non-athletes after ablation.

问答:房颤、耐力训练与消融术——运动员需要了解的知识

Right Coronary Artery (RCA)

定义

One of the two main coronary arteries that supply oxygenated blood to the heart muscle; it runs along the right side of the heart and feeds the right ventricle and, in most people, the lower wall of the left ventricle.

为什么这很重要

The RCA was the site of Dr. Megdal's largest blockage (70%), making it a central detail in understanding the severity of his disease.

Read: How I Reversed My Heart Disease

风险计算器

定义

A risk calculator estimates your chance of a heart attack or stroke over the next ten years, using your age, cholesterol, blood pressure, and a few other inputs.

为什么这很重要

They are useful starting points but systematically underestimate risk in younger people, because ten-year windows hide a lifetime of accumulating exposure. Most also ignore family history and Lp(a) entirely.

双倍剂量:你的家谱是生物危险品吗?这里有拯救生命的信息

风险因素

定义

A risk factor is something that raises your chance of developing a disease — high cholesterol particles, high blood pressure, smoking, diabetes, family history.

为什么这很重要

Some you can change and some you cannot. The encouraging finding is that people who keep all the changeable ones in good shape from a young age develop remarkably little heart disease.

心脏病是一种选择吗?阻止斑块形成的‘零风险’秘诀

风险预测

定义

Risk prediction in cardiovascular medicine refers to the use of clinical variables — such as age, blood pressure, cholesterol, and smoking status — or direct measurements such as imaging to estimate an individual's probability of suffering a heart attack or stroke within a defined time horizon.

为什么这很重要

The article contrasts traditional risk prediction from blood tests with the more direct information provided by arterial imaging.

Read: You Feel Fine – That’s the Problem

RNA-Based Therapies (for Lp(a))

定义

RNA-based therapies targeting Lp(a) — including the small interfering RNA agent Inclisiran and investigational agents such as Pelacarsen (an antisense oligonucleotide) and Olpasiran (a small interfering RNA) — work by silencing the hepatic gene that produces apolipoprotein(a), reducing Lp(a) levels by up to 95% in clinical trials.

为什么这很重要

These drugs represent the first realistic hope of treating a risk factor that diet, exercise, and statins cannot meaningfully lower.

为什么你‘正常’的胆固醇其实是一个警告信号

Road Time Trial

定义

A competitive cycling event held on open roads in which each rider starts individually and races against the clock over a fixed course, using aerodynamic equipment and positioning to minimize resistance.

为什么这很重要

The sustained, high-intensity cardiovascular demand of a time trial makes it a benchmark for aerobic fitness in masters athletes.

Read: Peter Megdal interviewed in Dedham Times

返回顶部

S

Salutogenic

定义

Health-promoting, as opposed to pathogenic; used in this article to describe the physiologically beneficial role of high cholesterol in breast-fed infants, where lipids support brain myelination and cell membrane synthesis rather than driving disease.

为什么这很重要

Helps readers understand why the same cholesterol number that is dangerous in an adult can be normal and necessary in an infant.

Read: Do Babies Need Statins?

参孙

定义

SAMSON was an unusual trial in which patients who had quit statins because of side effects took, in random order, the statin, an identical placebo, and no pill at all.

为什么这很重要

Symptoms were nearly as bad on the placebo as on the real drug. It is the strongest evidence that most statin side effects are a nocebo response, and many participants restarted treatment afterward.

我应该服用降胆固醇药吗?当然应该。.

肌少症

定义

Sarcopenia is the progressive loss of muscle mass and strength that comes with age.

为什么这很重要

It predicts falls, disability, and death, and it accelerates sharply after about 60. Resistance training and adequate protein are the only well-established defenses, and both become more important with age rather than less.

是什么在65岁前夺走你的生命,却可能在65岁后拯救你——蛋白质的悖论

肌少性肥胖

定义

Sarcopenic obesity is a body-composition state in which a person has low muscle mass combined with excess body fat, even if overall body weight appears normal; it is associated with frailty, insulin resistance, and increased mortality risk.

为什么这很重要

It explains why the scale or BMI alone can be misleading—hidden muscle loss dramatically affects long-term health outcomes.

现代医学能拯救一个久坐不动的人吗?持续40年的三胞胎实验

Satiety

定义

The feeling of fullness and suppression of appetite following a meal; protein is the most satiating macronutrient per calorie, and higher-protein diets exploit this property to reduce total energy intake and support weight loss.

为什么这很重要

Satiety helps explain why higher-protein diets often produce weight loss without deliberate calorie counting.

Read: The Protein Debate

饱和脂肪

定义

Saturated fat is the kind that stays solid at room temperature — butter, the fat in red meat, coconut oil, and palm oil.

为什么这很重要

It raises LDL cholesterol by making your liver less efficient at clearing particles from your blood. Replacing it with unsaturated fat lowers cholesterol. Replacing it with sugar and refined flour does not, which is where a lot of confusing advice came from.

椰子油作为健康食品的神话:行业如何左右你的饮食!

Saturated Fatty Acids (SFAs)

定义

Saturated fatty acids are fat molecules with no carbon-carbon double bonds, found abundantly in butter, coconut oil, and fatty meat; they raise LDL cholesterol and ApoB-containing lipoprotein levels more than unsaturated plant oils, which is why replacing them with unsaturated fats is a central public-health recommendation.

为什么这很重要

The entire dietary fat debate hinges on what you replace saturated fat with, making this the baseline for comparison.

阅读:seed oils 是否健康,是真是假?

SATURN Trial

定义

A head-to-head serial IVUS trial comparing rosuvastatin 40 mg with atorvastatin 80 mg over 24 months; both regimens produced coronary plaque regression, confirming that intensive therapy with either high-potency statin achieves similar plaque-volume reductions.

为什么这很重要

SATURN reinforced that it is the degree of LDL lowering, not the specific statin, that drives regression, guiding treatment choices.

Read: Reversal of Coronary Atherosclerosis: Mechanistic Insights from Human and Primate Studies

斯堪地那维亚辛伐他汀生存研究 (4S)

定义

The 4S trial was a landmark 1994 randomised controlled trial that demonstrated simvastatin significantly reduced all-cause mortality and major cardiovascular events in patients with established coronary heart disease and elevated cholesterol, providing the first definitive evidence that statin therapy saves lives in secondary prevention.

为什么这很重要

The 4S study helped cement the 'lower is better' approach to LDL-C and justified the aggressive cholesterol targets that followed in subsequent guidelines.

为什么你‘正常’的胆固醇其实是一个警告信号

SCAPIS

定义

SCAPIS (Swedish CArdioPulmonary bioImage Study) is a large population imaging study of more than 25,000 Swedish adults aged 50 to 64 with no known coronary artery disease, which used coronary CT angiography to detect atherosclerosis in 42 percent of participants and significant stenosis in about 5 percent.

为什么这很重要

Its scale makes it one of the most reliable estimates of how common silent coronary disease is in apparently healthy middle-aged adults.

先天性疾病

Scavenger Receptors (CD36 / SR-A)

定义

Scavenger receptors, including CD36 and SR-A, are cell-surface proteins on macrophages that mediate the uptake of modified lipoproteins; TMAO upregulates these receptors, causing macrophages to accumulate excessive cholesterol and transform into lipid-laden foam cells that embed in artery walls and drive atherosclerotic plaque growth.

为什么这很重要

This links TMAO directly to the formation of arterial plaque, connecting gut bacteria to the core mechanism of heart disease.

牛排中的隐形毒素:肠道细菌如何引发心脏病

SCOT-HEART Trial

定义

SCOT-HEART was a randomised controlled trial conducted in Scotland that compared CCTA added to standard care versus standard care alone in patients with stable chest pain; patients assigned to CCTA had a 41% lower rate of fatal or non-fatal myocardial infarction at five years, largely because the scan detected hidden disease and led to earlier targeted preventive treatment.

为什么这很重要

It is the key evidence that getting a detailed coronary CT scan — rather than relying on standard tests alone — can meaningfully reduce heart attacks.

医生没有为你开具的心脏检查

二级预防

定义

Secondary prevention is treating someone who has already had a heart attack, stroke, or stent, to stop the next one.

为什么这很重要

The math here is completely different from prevention in a healthy person. Risk is high, benefit per person is large, and treatments that are optional for a healthy 45-year-old become close to essential.

每日阿司匹林究竟是在夺走你的生命还是在拯救你?最新科学研究怎么说。.

Secretory Phospholipase A2 (sPLA2)

定义

Secretory phospholipase A2 is an enzyme present in the arterial wall that cleaves phospholipids on retained LDL particles, chemically modifying them and promoting their aggregation and fusion; this modification accelerates the inflammatory response that drives plaque progression.

为什么这很重要

It illustrates how the arterial wall actively worsens the damage once a particle is trapped, not just passively accumulates it.

年轻时(20多岁和30多岁)胆固醇高,即使日后降下来了,以后也会引发心脏病发作吗?

Secretory Sphingomyelinase

定义

Secretory sphingomyelinase is an enzyme present in the arterial wall that modifies retained LDL particles after they become trapped in the intima, promoting their aggregation and making them far more atherogenic than native LDL.

为什么这很重要

It illustrates that arterial retention—not just circulating LDL levels—is what drives the inflammatory cascade leading to plaque.

Read: The Big Cholesterol Lie, Part 2

种子油

定义

Seed oils are cooking oils pressed from seeds — soybean, sunflower, canola, corn, safflower.

为什么这很重要

They have become a popular villain online, blamed for inflammation and disease. When actually tested, replacing saturated fat with them lowers LDL cholesterol and, in controlled trials, reduces heart events. The claimed inflammatory harm has not held up well in humans.

阅读:seed oils 是否健康,是真是假?

细分参与得分(SIS)

定义

A coronary CT angiography measure that counts the number of coronary artery segments (out of 18 standardized segments) containing any plaque, regardless of whether the plaque is calcified or not; in the SCAPIS study, an SIS greater than 4 was associated with a hazard ratio of 5.27 for first coronary events.

为什么这很重要

It captures the breadth of plaque distribution throughout the coronary tree, which predicts heart attack risk more powerfully than calcium score alone.

一种无需手术透视心脏的新方法——预测心脏病发作的最佳途径

SELECT Trial

定义

SELECT was a large randomized controlled trial that tested weekly semaglutide (2.4 mg) versus placebo in adults with overweight or obesity and established cardiovascular disease but without diabetes; it found a 20% reduction in major adverse cardiovascular events, suggesting cardiovascular benefits beyond weight loss alone.

为什么这很重要

SELECT established that GLP-1 medications can directly reduce heart attack and stroke risk, not merely improve metabolic numbers.

现代医学能拯救一个久坐不动的人吗?持续40年的三胞胎实验

Senescent Cells

定义

Cells that have permanently stopped dividing in response to stress or damage and instead secrete a cocktail of inflammatory cytokines, proteases, and growth factors; in the arterial wall, their accumulation with age drives chronic inflammation and accelerates plaque growth.

为什么这很重要

Knowing that your own aging cells actively worsen plaque helps explain why heart-disease risk climbs with age independent of diet or lifestyle.

Read: How Does Age Affect Atherosclerosis? A Q&A Explainer

抗衰老药物

定义

Senolytics are a class of drugs or compounds designed to selectively kill senescent cells; they are under investigation as potential anti-aging therapies but have not been tested in human trials for cardiovascular outcomes, and animal studies suggest they may worsen plaque stability in advanced disease.

为什么这很重要

Senolytics are widely marketed as supplements, but the cardiovascular evidence in humans is absent and animal data raise safety concerns.

Read: Heart disease accelerates as you age

Senotherapeutics

定义

An emerging class of experimental drugs designed to selectively eliminate (senolytics) or suppress the harmful secretions of senescent cells (senostatics), with the goal of reducing inflammation and slowing age-related diseases including atherosclerosis.

为什么这很重要

These drugs represent a potential future tool for targeting the cellular aging process that underlies much of cardiovascular disease risk.

Read: How Does Age Affect Atherosclerosis? A Q&A Explainer

Serial IVUS

定义

The technique of performing intravascular ultrasound imaging of the same coronary artery segments at two or more time points—typically 18–24 months apart—so that changes in plaque volume and vessel dimensions can be measured precisely in the same patient over time.

为什么这很重要

Serial IVUS is the gold-standard method for detecting plaque regression in clinical trials and is the basis for most of the evidence cited in this article.

Read: Reversal of Coronary Atherosclerosis: Mechanistic Insights from Human and Primate Studies

Serine Protease

定义

A class of enzymes that cleave protein bonds using a serine residue in their active site; PCSK9 belongs to this class and uses this activity to target LDL receptors for degradation.

为什么这很重要

Classifying PCSK9 as a serine protease helps explain why antibody drugs—which block its binding rather than its enzymatic site—are an effective therapeutic strategy.

Read: Cholesterol: How Low is Too Low?

Serotonergic Regulation

定义

The biological processes by which the neurotransmitter serotonin is synthesized, released, and modulated; estrogen directly influences serotonin neurons in the brain's raphe nuclei, so estrogen withdrawal can increase stress reactivity and emotional vulnerability.

为什么这很重要

This mechanism links hormonal change to the mood and anxiety symptoms many women experience during menopause.

绝经 内分泌 心血管 风险

Serum Albumin

定义

A protein synthesized by the liver that serves as a key marker of nutritional status and overall protein adequacy; low serum albumin in older adults is consistently associated with higher mortality risk and is used clinically as an indicator of frailty and undernutrition.

为什么这很重要

The article cites albumin as a prognostic marker illustrating why calorie and protein sufficiency—not dietary purity—becomes the dominant concern in oldest-old adults.

素食主义真的能延年益寿吗?这是一个谎言吗?

西兜蛋白2

定义

Sestrin2 is an intracellular sensor protein that detects leucine levels inside the cell and relays that signal to mTORC1; when leucine is abundant, Sestrin2 releases an inhibitory brake on mTORC1, allowing muscle protein synthesis to proceed. It is part of the GATOR2–leucyl-tRNA-synthetase axis that links dietary protein intake to anabolic signaling.

为什么这很重要

It explains the molecular 'lock' that must be opened by leucine before muscles can begin repairs after exercise.

是什么在65岁前夺走你的生命,却可能在65岁后拯救你——蛋白质的悖论

Severe Hypercholesterolemia

定义

Severe hypercholesterolemia is defined by the 2026 ACC/AHA/Multisociety Dyslipidemia Guideline as an LDL-C ≥190 mg/dL, non–HDL-C >220 mg/dL, and/or ApoB >140 mg/dL, representing a distinct management category in which maximally tolerated statin therapy is recommended as a Class 1 indication.

为什么这很重要

Knowing this threshold clarifies when guidelines recommend treating high cholesterol as a standalone risk — even in the absence of other cardiovascular risk factors or a positive family history.

基因好能战胜血脂差吗?

Severity Weight

定义

The severity weight (W) is a numerical value assigned within the Inherited Hazard Coefficient formula to reflect how serious a relative's cardiac event was — for example, sudden cardiac death receiving a higher weight than a non-fatal, medically managed event.

为什么这很重要

It ensures that a family history of fatal events raises the risk index more sharply than a history of milder outcomes.

Read: The Heart Health App That Finally Asks the Right Question

Sex-Specific Cardiovascular Effects

定义

Differences in cardiovascular disease risk, progression, or response to an exposure that depend on biological sex — including sex chromosomes, hormone levels, and hormonal signaling — rather than lifestyle factors alone; estrogen, for example, is thought to confer relative protection against early atherosclerosis in females.

为什么这很重要

The stark male-only plaque increase in this study highlights that sex biology can profoundly shape how environmental exposures harm the heart.

问答:日常微塑料是否在助长心脏病?

共同决策

定义

Shared decision-making is a clinical approach in which the physician and patient together weigh the available evidence — including imaging results, risk factors, and personal goals — to reach a management plan that reflects both medical best practice and the individual's values; the 2025 AHA/ACC guidelines specifically invoke it for athletes found to have elevated coronary calcium scores.

为什么这很重要

For athletes facing a concerning scan result, this framework determines whether they are advised to stop competing, continue with monitoring, or start medications — making it directly relevant to real-life decisions.

巅峰体能与隐形钙化:运动员的斑块积聚悖论

SHBG (Sex Hormone-Binding Globulin)

定义

Sex Hormone-Binding Globulin is a liver-produced glycoprotein that binds testosterone (and estrogen) with high affinity, rendering the bound hormone biologically inactive and unavailable to tissues; because SHBG rises with age, obesity, and metabolic disease, two men with identical total testosterone levels can have very different amounts of usable hormone.

为什么这很重要

Understanding SHBG explains why a 'normal' total testosterone result can still leave a man feeling symptomatic.

Read: Testosterone Therapy and Your Heart: Why Your Total Score is Misleading

Short-Chain Fatty Acids (SCFAs)

定义

Metabolites—primarily butyrate, propionate, and acetate—produced when gut bacteria ferment dietary fiber; butyrate in particular exerts anti-inflammatory effects and influences gene expression through inhibition of histone deacetylase enzymes.

为什么这很重要

SCFAs are the mechanism by which high-fiber plant diets may slow immune aging and support metabolic stability in long-lived populations.

素食主义真的能延年益寿吗?这是一个谎言吗?

Sialic Acids

定义

Sialic acids are a family of nine-carbon monosaccharides that cap the outermost ends of cell-surface glycan chains; their strong negative charge and exposed position make them key mediators of immune self-recognition, pathogen binding, and endothelial stability.

为什么这很重要

The specific type of sialic acid on a cell determines whether the immune system treats that cell as self or foreign, which is at the core of the xenosialitis hypothesis.

你的免疫系统在与你的牛排开战吗?

病退者偏倚

定义

A form of selection bias in alcohol research in which former drinkers who stopped due to illness are grouped with lifelong abstainers, making the non-drinking reference group appear unhealthier than it truly is and artificially inflating the apparent benefit of moderate drinking.

为什么这很重要

Recognizing this bias helps explain why early studies overstated the heart benefits of moderate alcohol.

半满的玻璃杯:为什么科学正向“有益心脏健康”的饮酒习惯挥手告别

Siglecs (Sialic Acid-Binding Lectins)

定义

Siglecs are a family of immune-cell receptors that bind sialic acids to distinguish self from non-self, regulating inflammatory signaling; when Neu5Gc replaces Neu5Ac on human endothelial cells, Siglec-mediated tolerance may be disrupted, contributing to the autoimmune-like response seen in xenosialitis.

为什么这很重要

These receptors are the molecular checkpoint that determines whether the immune system attacks or tolerates a sialic-acid-decorated surface.

你的免疫系统在与你的牛排开战吗?

Silent Heart Disease

定义

Coronary artery disease that produces no chest pain, breathlessness, or other classic symptoms, leaving it undetected until imaging or a cardiac event reveals its presence; highly fit individuals are especially prone to missing it because their cardiovascular reserve masks functional impairment.

为什么这很重要

Silent heart disease is the reason a symptom-free, athletic person can still be at imminent risk of a heart attack.

Read: Peter Megdal on The Lynchpin Podcast

无症状性心肌缺血

定义

Silent ischemia is when the heart muscle is starved of oxygen but the person feels nothing at all.

为什么这很重要

Highly trained athletes are particularly prone to it. Years of hard exercise raise pain tolerance, build backup blood vessels, and teach people to ignore discomfort. The result is severe disease that produces no warning until something serious happens.

体质好如何掩盖心脏病发作

无症状心肌缺血

定义

Silent myocardial ischemia is reduced blood flow to the heart during exertion that produces no chest pain or recognizable symptoms; in master athletes, elevated pain thresholds from years of training can mask this warning sign entirely.

为什么这很重要

An athlete can be in the middle of a cardiac event and feel nothing unusual — understanding SMI explains why 'no pain' does not mean 'no problem.'

体质好如何掩盖心脏病发作

Sinoatrial Node

定义

The sinoatrial node is a small cluster of specialized cells in the right atrium that generates the electrical impulse triggering each heartbeat; it acts as the heart's natural pacemaker, and its intrinsic firing rate declines with age independently of fitness level.

为什么这很重要

Age-related slowing of this node sets the hard ceiling on maximum heart rate that no amount of training can overcome.

体质好如何掩盖心脏病发作

siRNA (Small Interfering RNA)

定义

A short, synthetic RNA molecule that binds to a specific messenger RNA target inside a cell and triggers its destruction before it can be translated into protein; inclisiran uses siRNA to block the liver from producing PCSK9, thereby reducing the removal of LDL receptors and lowering circulating ApoB-containing particles.

为什么这很重要

Understanding siRNA explains why inclisiran works with just two injections a year rather than a daily pill—the silencing effect persists long after the molecule itself is gone.

Read: The Cholesterol Breakthrough: From Daily Pills to Twice-a-Year Shots

Sit-Bone (Ischial Tuberosity) Pressure

定义

The compressive load placed on the bony prominences of the pelvis where they contact the bicycle saddle; during a prolonged, high-power effort the sustained pressure, amplified by increased effective body weight in banked turns, can cause significant musculoskeletal pain and force the athlete to briefly unweight.

为什么这很重要

Pain management strategies affect pacing decisions and, consequently, cardiovascular effort distribution throughout an event.

阅读:彼得·梅格达尔 2022 年一小时纪录挑战

Sitosterolemia (Phytosterolaemia)

定义

Sitosterolemia is a rare autosomal recessive disorder caused by biallelic mutations in the ABCG5 or ABCG8 genes, leading to excessive intestinal absorption and reduced biliary excretion of plant sterols and cholesterol, and presenting with markedly elevated LDL-C and early xanthomas that can closely mimic HoFH but respond well to dietary change and ezetimibe.

为什么这很重要

Distinguishing sitosterolemia from HoFH is critical because the two conditions look nearly identical but require very different treatments.

Read: Children With 60-Year-Old Arteries: The Extreme Reality of HoFH

Skinsuit

定义

A one-piece, form-fitting garment worn by competitive cyclists to minimize aerodynamic drag; the fabric, seams, and fit are engineered to reduce air resistance at high speeds.

为什么这很重要

Reducing drag lowers the cardiovascular workload needed to sustain a given speed, making equipment choices directly relevant to exercise physiology.

Read: Peter Megdal interviewed in Dedham Times

SLCO1B1

定义

SLCO1B1 is the gene encoding the liver transporter OATP1B1, which carries hydrophilic statins — and to a lesser degree lipophilic ones — into hepatocytes; common variants in this gene reduce transporter activity, raising statin blood levels and increasing the risk of muscle toxicity.

为什么这很重要

A simple genetic test for SLCO1B1 variants can identify patients at higher risk of statin muscle side effects before symptoms begin.

我应该服用降胆固醇药吗?当然应该。.

小而密低密度脂蛋白

定义

Small dense LDL particles are LDL particles that are smaller and carrying less cholesterol than usual.

为什么这很重要

They are more common in people with insulin resistance and high triglycerides. Because each one holds less cholesterol, you need many more of them to reach the same LDL number — so a normal result can be hiding a very high particle count.

不要再迷信低密度脂蛋白(LDL)!关于载脂蛋白B(ApoB)、胰岛素抵抗与糖尿病的真相

Smith–Lemli–Opitz Syndrome

定义

Smith–Lemli–Opitz syndrome is an inherited metabolic disorder caused by deficiency of DHCR7, the enzyme that completes the Kandutsch–Russell branch of cholesterol synthesis, resulting in toxic accumulation of the precursor 7-dehydrocholesterol and severely reduced cholesterol production. It manifests with multiple congenital abnormalities and intellectual disability.

为什么这很重要

This syndrome illustrates how critically the body depends on intact cholesterol biosynthesis and provides a clinical window into the Kandutsch–Russell pathway.

百万美元分子:为什么你的身体为胆固醇付出巨资

Smooth Muscle Cell

定义

Smooth muscle cells make up the middle layer of an artery and control how much the vessel tightens or relaxes.

为什么这很重要

During plaque formation they migrate inward and build the fibrous cap, which is protective. But they can also change character and take on cholesterol themselves, contributing to the plaque they are covering.

Read: Do endurance sports help or hurt arteries?

Sodium Loading (Pre-Exercise)

定义

The deliberate intake of sodium before prolonged exercise to help retain fluid in the bloodstream, support plasma volume, and sustain muscle contractility, particularly important for athletes who lose large amounts of sodium through sweat.

为什么这很重要

Maintaining sodium and fluid balance directly affects blood pressure regulation and cardiac output during intense endurance exercise.

Read: Cyclist Peter Megdal seeks out, and overcomes, difficult obstacles

软斑块

定义

Non-calcified, lipid-rich atherosclerotic plaque that does not appear bright on a standard calcium score scan but is detectable by CT angiography; it is considered higher risk for rupture than fully calcified plaque.

为什么这很重要

This distinction explains why a calcium score alone can miss dangerous plaque and why CT angiography provides more complete information.

阅读:《重新思考心脏健康:彼得·梅格达尔如何将一纸诊断转化为推动变革的使命》

SORT1 (Sortilin)

定义

SORT1 encodes sortilin, a liver-expressed protein involved in intracellular trafficking of VLDL particles and LDL receptor activity; a non-coding regulatory variant on chromosome 1p13 that alters SORT1 expression in hepatocytes was identified through GWAS and subsequent functional studies as a determinant of LDL cholesterol levels and myocardial infarction risk.

为什么这很重要

The SORT1 story is a key example of how a GWAS signal in non-coding DNA can be traced to a specific gene and a specific mechanism relevant to heart disease.

心血管保护的遗传架构

SPARCL Trial

定义

SPARCL (Stroke Prevention by Aggressive Reduction in Cholesterol Levels) was a randomized controlled trial demonstrating that high-intensity atorvastatin significantly reduces the risk of recurrent stroke or TIA in patients who have already had a cerebrovascular event.

为什么这很重要

It is one of the key trials establishing that lowering ApoB-containing particles protects the brain, not just the heart.

为什么载脂蛋白B(ApoB)很重要?

Spatial Resolution

定义

Spatial resolution in medical imaging refers to the smallest structure a scanner can distinguish as a separate object; coronary CT angiography has a practical resolution limit of about 0.4–0.5 mm, meaning early atherosclerotic lesions thinner than a human hair—typically 100–300 micrometers—are invisible to the scan even when biologically present.

为什么这很重要

Understanding resolution limits shows why a 'zero' result on a heart scan reflects the camera's sensitivity, not necessarily the absence of disease.

Read: Does metabolic health protect you from high cholesterol?

Spontaneous Coronary Artery Dissection (SCAD)

定义

A non-atherosclerotic tearing of the inner wall of a coronary artery that creates a false channel compressing the true lumen, particularly affecting younger and middle-aged women; angiographic appearances can be subtle and may require intracoronary imaging to confirm.

为什么这很重要

SCAD is an important and under-recognized cause of heart attacks in women that can be missed on a standard angiogram.

隐匿性梗死:MINOCA机制、诊断与管理的深入研究验证

Sports Cardiologist

定义

A cardiologist with specialized training in the cardiovascular effects of exercise and athletic performance, able to distinguish normal athletic adaptations (athlete's heart) from pathological conditions and guide return-to-sport decisions.

为什么这很重要

The article recommends this specific subspecialty for athletes navigating AF and post-ablation decisions.

问答:房颤、耐力训练与消融术——运动员需要了解的知识

SREBP-2

定义

SREBP-2 (sterol regulatory element-binding protein 2) is a transcription factor that senses low intracellular sterol levels in the liver and responds by increasing the production and surface expression of LDL receptors, thereby accelerating clearance of LDL from the blood.

为什么这很重要

This feedback mechanism is central to why statins lower LDL: the drug depletes hepatic cholesterol, SREBP-2 turns up LDL receptors, and the liver pulls more LDL out of circulation.

我应该服用降胆固醇药吗?当然应该。.

SREBP-2 / SCAP / Insig Sensor

定义

SREBP-2, SCAP, and Insig form a cholesterol-sensing system in the endoplasmic reticulum: when ER cholesterol exceeds roughly 5 mol%, SCAP retains SREBP-2 in the ER, suppressing further cholesterol synthesis and LDL receptor expression.

为什么这很重要

This feedback loop explains why cells tightly regulate their own cholesterol production and why statin therapy upregulates LDL receptors to pull more cholesterol from the blood.

您的细胞会自行合成胆固醇——那为什么您的血液里到处都是它?

SREBP-2–SCAP–INSIG Axis

定义

The SREBP-2–SCAP–INSIG axis is the cell's master cholesterol-sensing circuit: when intracellular cholesterol falls, the protein SCAP escorts SREBP-2 to the Golgi for activation, switching on genes for cholesterol synthesis and LDL-receptor expression; when cholesterol is sufficient, INSIG retains the complex in the endoplasmic reticulum, shutting the pathway down.

为什么这很重要

It explains why cells can make their own cholesterol and why very low blood LDL-C does not necessarily starve tissues of what they need.

胆固醇:它有什么用?

ST Segment Depression

定义

An abnormal finding on an electrocardiogram (EKG) in which the ST segment—the portion of the tracing between the end of one heartbeat and the start of the next—drops below the baseline; a horizontal ST depression during exercise is a classic sign of cardiac ischemia, meaning the heart muscle is not receiving enough blood.

为什么这很重要

Recognizing this EKG pattern is key to understanding why Dr. Megdal's stress test raised concern even when his overall fitness appeared excellent.

Read: How I Reversed My Heart Disease

ST-Elevation Myocardial Infarction (STEMI)

定义

A STEMI is a specific, severe type of heart attack in which a coronary artery is completely blocked, producing a characteristic pattern on an electrocardiogram called ST-elevation. It is the category for which emergency reperfusion — thrombolysis or primary PCI — is most urgently needed and most clearly beneficial.

为什么这很重要

STEMI is the benchmark for measuring how much acute cardiac care has improved; contemporary in-hospital STEMI mortality of roughly 4–7% is compared against the roughly 20–30% mortality of the pre-CCU era.

心血管疾病史

Stable Coronary Artery Disease (Stable CAD)

定义

Stable CAD describes a chronic condition in which coronary artery blockages produce predictable symptoms such as exertional chest pain but are not acutely worsening or causing a heart attack; it is distinguished from acute coronary syndromes in which plaques are actively rupturing.

为什么这很重要

The distinction between stable and unstable disease is central to this article's argument that most patients with stable blockages do not need emergency intervention.

治疗生物学而非管道:心脏病学激进的新方法

Stable Disease (Stable Coronary Artery Disease)

定义

Stable coronary artery disease refers to a pattern of fixed or slowly progressing atherosclerotic narrowing that produces predictable, exertion-related symptoms rather than the abrupt plaque rupture seen in a heart attack. Current guidelines and major trials emphasize that stable disease can often be managed effectively with medications and lifestyle changes rather than immediate stenting or bypa…

为什么这很重要

This distinction is central to the article's message: many patients with stable disease are offered procedures when evidence supports trying lifestyle and medication first.

Read: Peter Megdal of curingheartdisease.com Interview

Stable Isotope Analysis

定义

A laboratory technique that measures the ratios of stable isotopes (such as carbon-13/carbon-12 or nitrogen-15/nitrogen-14) preserved in bone or tissue; in archaeology and paleoanthropology it is used to reconstruct ancient diets, including estimating how much animal food early humans consumed.

为什么这很重要

This is one of the primary scientific tools cited to support evolutionary arguments about ancestral meat consumption.

Read: The Protein Debate

他汀类药物

定义

A statin slows the enzyme your liver uses to make cholesterol. Your liver responds by pulling more cholesterol out of your blood, which is where the real benefit comes from.

为什么这很重要

Statins are the most studied cardiovascular medicines in existence, tested in hundreds of thousands of people. They lower LDL and ApoB, stabilize plaques, and reduce heart attacks and deaths.

我应该服用降胆固醇药吗?当然应该。.

他汀类药物相关性肌肉症状

定义

Statin-associated muscle symptoms is the clinical umbrella term for the spectrum of muscle-related complaints — pain, weakness, cramps, and fatigue — reported by patients taking statins, ranging from mild discomfort driven largely by the nocebo effect to rare serious myopathy.

为什么这很重要

SAMS is the leading reason patients stop statins, so distinguishing its many causes is essential to keeping people on life-saving treatment.

我应该服用降胆固醇药吗?当然应该。.

StatinWISE

定义

StatinWISE was an n-of-1 randomized trial in which individual patients alternated between statin tablets and placebo tablets across multiple periods, allowing a within-person comparison of symptoms; its results confirmed that a substantial portion of muscle symptoms attributed to statins are not pharmacologically caused.

为什么这很重要

The n-of-1 design of StatinWISE provides especially strong evidence about individual responses, going beyond average group comparisons to show what a specific type of patient actually experiences.

我应该服用降胆固醇药吗?当然应该。.

支架

定义

A stent is a small metal mesh tube expanded inside a narrowed artery to hold it open.

为什么这很重要

During a heart attack, stents save lives. For stable chest pain, large trials found they relieve symptoms but do not prevent future heart attacks better than medication alone. A stent fixes one spot; the disease lives in all your arteries.

健美、迅捷且险些丧命:世界级自行车手如何发现隐匿性心脏病

STOMP Trial

定义

A randomized, placebo-controlled trial that tested high-dose atorvastatin in healthy, physically active participants; it found increased muscle symptoms and creatine kinase levels but no significant reduction in muscle strength or exercise performance over six months.

为什么这很重要

The most directly relevant trial evidence for athletes wondering whether statins measurably harm physical performance.

阅读:《运动员的胆固醇:如何在不影响竞技状态的情况下降低低密度脂蛋白(LDL)》(他汀类药物实用指南)

STRENGTH Trial

定义

A randomized trial testing 4 g/day of a mixed EPA/DHA formulation versus corn oil in high-risk cardiovascular patients; it found no reduction in major adverse cardiovascular events, suggesting that EPA-only and EPA+DHA formulations are not interchangeable.

为什么这很重要

STRENGTH's null result is a key reason cardiologists distinguish between EPA-only and mixed omega-3 products.

Read: Heart Disease and Fish Oil

Stress CMR (Cardiac Magnetic Resonance)

定义

Stress cardiac magnetic resonance imaging is a non-invasive test that uses MRI to assess myocardial perfusion and wall motion during pharmacological or exercise stress, detecting ischemia without radiation. It is highlighted in the article as part of an advanced imaging framework for athletes in whom standard stress testing may be unreliable.

为什么这很重要

It offers a more sensitive way to detect hidden ischemia in athletes whose symptoms and standard ECG stress tests may appear falsely reassuring.

运动如何阻断疼痛:运动员心脏的致命秘密

中风

定义

A stroke happens when blood flow to part of the brain stops, either from a blockage or from bleeding.

为什么这很重要

Signs come on suddenly: face drooping, arm weakness, slurred speech, sudden vision or balance problems. Call emergency services immediately — treatments that limit the damage only work within a short window.

Stroke Volume

定义

Stroke volume is the amount of blood the heart pumps out with each beat; in master athletes, chronic training promotes larger, more compliant ventricles that maintain higher stroke volumes, partially offsetting the inevitable age-related drop in maximum heart rate.

为什么这很重要

Stroke volume is a key lever athletes can influence through training, making it central to understanding why fit people age better aerobically than sedentary peers.

体质好如何掩盖心脏病发作

Subendothelial Proteoglycan Matrix

定义

The subendothelial proteoglycan matrix is the structural meshwork of proteoglycans — including versican, biglycan, and heparan sulfate — lying just beneath the endothelial lining of artery walls; ApoB-containing lipoprotein particles that cross the endothelium become physically trapped here, where they are oxidised and initiate the atherosclerotic process.

为什么这很重要

This is the precise anatomical site where heart disease begins, which is why particle count matters more than particle size.

为什么你‘正常’的胆固醇其实是一个警告信号

内皮下滞留

定义

Subendothelial retention is the process by which ApoB-containing lipoprotein particles that have crossed the endothelial barrier become electrostatically bound to proteoglycans in the arterial intima and are unable to diffuse back into the bloodstream; it is considered the non-redundant first step in atherosclerosis under the response-to-retention framework.

为什么这很重要

It is the physical event that converts circulating particles into a permanent, disease-starting deposit—the reason lowering particle number early is so protective.

年轻时(20多岁和30多岁)胆固醇高,即使日后降下来了,以后也会引发心脏病发作吗?

Subendothelial Space

定义

The subendothelial space is the narrow gap just beneath the artery's inner lining, between that single layer of cells and the muscle beneath.

为什么这很重要

This is exactly where ApoB particles get trapped and where every plaque begins. Everything else in atherosclerosis follows from what accumulates in this thin layer.

Read: Which Came First – the Lipid or the Inflammation? Apolipoprotein B and the Chicken-and-Egg Problem of Atherogenesis

Sudden Cardiac Arrest (SCA)

定义

Sudden cardiac arrest is the abrupt cessation of effective heart pumping that, unlike sudden cardiac death, is followed by successful restoration of circulation; the two conditions share the same underlying event and differ only in whether resuscitation succeeds.

为什么这很重要

Understanding the difference between arrest and death clarifies why rapid bystander response can turn a fatal event into a survivable one.

如何避免英年早逝

糖类研究基金会

定义

The Sugar Research Foundation was a mid-20th century industry group funded by sugar manufacturers that commissioned and published research — including the 1960s initiative known as Project 226 — specifically designed to shift scientific and public attention away from dietary sugar and toward dietary fat as the primary dietary cause of cardiovascular disease.

为什么这很重要

Understanding the Sugar Research Foundation's role shows how industry funding can distort the scientific consensus on diet and heart health for decades.

胆固醇大谎言:揭露饮食行业的有组织否认

SUMMIT Trial

定义

SUMMIT was a randomized placebo-controlled trial testing tirzepatide in patients with HFpEF and obesity that demonstrated a 38% reduction in the composite of cardiovascular death and worsening heart failure events, along with a 34.9% drop in hs-CRP and meaningful improvement in 6-minute walk distance.

为什么这很重要

SUMMIT is cited as the key evidence that these drugs offer 'new hope' for stiff-heart disease, so knowing what the trial measured helps readers assess that claim.

Read: Ozempic and Mounjaro: Saving Your Heart BEFORE the Scale Moves

瓣上主动脉瓣狭窄(SVAS)

定义

Supravalvular aortic stenosis is a narrowing of the aorta just above the aortic valve caused in HoFH by massive infiltration of xanthomatous, cholesterol-rich tissue into the aortic wall and valve leaflets, creating a structural obstruction to blood flow out of the heart. Unlike age-related calcific valve disease, SVAS in HoFH is a direct consequence of extreme lipid accumulation rather than dege…

为什么这很重要

SVAS can produce sudden, life-threatening obstruction even in young children with HoFH, making it a critical complication to monitor.

Read: Children With 60-Year-Old Arteries: The Extreme Reality of HoFH

SURPASS-CVOT

定义

SURPASS-CVOT was a randomized active-comparator trial comparing tirzepatide with the GLP-1 receptor agonist dulaglutide in patients with type 2 diabetes and established cardiovascular disease; tirzepatide was noninferior for 3-point MACE (HR 0.92) and reduced all-cause mortality by 16%, though it did not achieve statistical superiority for MACE.

为什么这很重要

This trial is the primary evidence base for tirzepatide's cardiovascular profile and helps readers understand what we know — and don't yet know — about Mounjaro's heart benefits.

Read: Ozempic and Mounjaro: Saving Your Heart BEFORE the Scale Moves

Surrogate Endpoint

定义

A surrogate endpoint is a measurable biological marker — such as LDL cholesterol, CIMT, or coronary artery calcium — used in trials as a stand-in for a clinical outcome like a heart attack; favorable changes in surrogates support plausibility of benefit but do not by themselves prove that a treatment prevents heart attacks or death.

为什么这很重要

Much of the evidence for hormone therapy's cardiovascular effects comes from surrogate endpoints, which is why the article stresses that hormones are not proven heart medicine.

Read: Does The New Estrogen Patch Prevent Heart Disease? The Complex Truth Explained

替代标志物

定义

A surrogate marker is a stand-in measurement used because the thing you really care about takes too long to observe.

为什么这很重要

Cholesterol is a good surrogate — lowering it genuinely reduces heart attacks. Others have failed badly: drugs that improved the number on the report while patients did no better, or worse. A moved number is a promise, not a result.

牛排中的隐形毒素:肠道细菌如何引发心脏病

Survival Bias (Cholesterol Paradox)

定义

An observational artifact in very elderly cohorts where higher LDL-C appears associated with longer survival, most likely because individuals who were most susceptible to lipid-driven cardiovascular disease have already died, leaving behind a selected group in whom other factors dominate longevity.

为什么这很重要

It cautions against interpreting apparent benefits of high cholesterol in the oldest old as evidence that LDL is harmless at any age.

Read: LDL “BAD” Cholesterol: Apolipoprotein B, Imaging Resolution, and the Illusion of “Normal” Coronary Arteries at Age 60

幸存者偏差

定义

Survivor bias in the elderly paradox refers to the statistical artifact whereby people who reach old age with high LDL may represent a genetically hardy subset who were never vulnerable to LDL-driven atherosclerosis, making high LDL appear safe in that age group when the susceptible individuals already died younger.

为什么这很重要

Recognizing this bias is essential to avoid misreading observational data on cholesterol and longevity in older adults.

Read: The Big Cholesterol Lie, Part 2

Survivorship Bias

定义

Survivorship bias in epidemiology occurs when a study population is shaped by who has already died or experienced events before observation begins; in cardiovascular aging research, it helps explain why octogenarians who still have high cholesterol appear no worse off — those most harmed by high cholesterol often died younger and are no longer in the sample.

为什么这很重要

Survivorship bias is a key reason why risk-factor relationships look weaker in very old populations, and ignoring it leads to wrong conclusions.

Read: Heart disease accelerates as you age

Sweat Sodium Loss

定义

The concentration and total amount of sodium excreted in sweat during exercise; individuals with high sweat-sodium rates can lose several grams per hour, increasing the risk of hyponatremia, muscle cramping, and impaired cardiac contractility if fluid and electrolytes are not replaced.

为什么这很重要

Electrolyte imbalance during prolonged exertion can provoke arrhythmias and cardiovascular complications.

阅读:彼得·梅格达尔 2022 年一小时纪录挑战

SWEDEHEART Registry

定义

A large Swedish national registry of patients hospitalized for cardiac conditions, used in observational analyses to examine real-world treatment patterns and outcomes, including the association of statins and renin–angiotensin system blockers with improved long-term outcomes in MINOCA patients.

为什么这很重要

The SWEDEHEART analyses provide the strongest available evidence on which medications may benefit MINOCA patients in the absence of large randomized trials.

隐匿性梗死:MINOCA机制、诊断与管理的深入研究验证

SYNTAX Trial

定义

The Synergy Between PCI with TAXUS and Cardiac Surgery trial randomized 1,800 patients with complex three-vessel or left main coronary artery disease to PCI or bypass surgery, finding at 10 years that CABG conferred a survival advantage in three-vessel disease but not in left main disease.

为什么这很重要

It established which patients gain the most from bypass surgery versus stenting when multiple arteries are blocked.

治疗生物学而非管道:心脏病学激进的新方法

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T

Takotsubo Syndrome

定义

A transient, stress-triggered cardiomyopathy characterized by acute left ventricular ballooning—typically apical—in the absence of obstructive coronary disease, which can mimic acute MI and must be excluded when diagnosing MINOCA.

为什么这很重要

Takotsubo is one of the non-ischemic mimics that must be ruled out before the MINOCA label can be correctly applied.

隐匿性梗死:MINOCA机制、诊断与管理的深入研究验证

Tanaka Equation

定义

The Tanaka equation estimates maximum heart rate as 208 minus 0.7 times a person's age; it predicts that maximum heart rate falls by roughly one beat per minute every year regardless of training status.

为什么这很重要

This formula gives athletes and clinicians a concrete benchmark for the age-related speed limit on the heart.

体质好如何掩盖心脏病发作

TANGO1 (MIA3)

定义

A protein encoded by the MIA3 gene that resides in the endoplasmic reticulum membrane and acts as a specialized export scaffold, organizing ring-like structures at ER exit sites to facilitate secretion of large cargoes—most importantly procollagen—that cannot fit into standard COPII vesicles.

为什么这很重要

Without adequate TANGO1 activity, vascular smooth muscle cells cannot build the thick collagen cap that keeps plaque stable, making rupture and heart attack more likely.

阅读:基因彩票:为什么你不能指望自己“刀枪不入”

Tapering

定义

A planned reduction in training volume and intensity in the days or weeks before a competition, designed to allow the body to recover fully and arrive at peak performance capacity on race day.

为什么这很重要

Tapering is a standard preparation strategy for endurance events; disrupting it—as COVID did for Megdal—directly affects cardiovascular and muscular readiness.

Read: Cyclist Peter Megdal seeks out, and overcomes, difficult obstacles

Taurine

定义

A sulfur-containing amino acid abundant in animal tissues that plays roles in bile acid conjugation, antioxidant defense, and cardiovascular function; humans have a reduced capacity to synthesize it endogenously, which Cordain cites as evidence of long evolutionary dependence on dietary animal protein.

为什么这很重要

Understanding which nutrients are conditionally essential from animal foods helps evaluate whether fully plant-based diets require supplementation for heart and metabolic health.

阅读:通过饮食治疗心脏病不仅是一种现代痴迷——它更是一种有数百万年进化历史支撑、并借助现代科学最先进手段的实践。

Telomere Length (TL)

定义

The length of protective repetitive DNA sequences capping chromosomes; shorter telomeres are a marker of cellular aging, and individuals born with shorter telomeres have been shown to carry significantly higher risks of midlife hypercholesterolemia and arterial damage.

为什么这很重要

It suggests that biological aging and cardiovascular risk are partly set at birth, not just shaped by adult lifestyle.

Read: Do Babies Need Statins?

中国健康调查报告

定义

A 2005 book by T. Colin Campbell summarizing decades of epidemiological research, including the China-Cornell-Oxford Project, that links diets high in animal protein and fat to higher rates of chronic disease including cardiovascular disease; it is widely cited in plant-based nutrition literature.

为什么这很重要

Along with Esselstyn's work, this book was a key source that led Dr. Megdal to adopt a whole-food plant-based diet as part of his recovery.

Read: How I Reversed My Heart Disease

Thin-Cap Fibroatheroma

定义

A thin-cap fibroatheroma is an advanced atherosclerotic lesion in which inflammatory proteolysis has reduced the fibrous cap thickness to below 65 micrometers over a necrotic core, making it the plaque phenotype most associated with rupture and acute coronary thrombosis.

为什么这很重要

It represents the 'vulnerable plaque' stage most directly linked to heart attacks, connecting decades of lipid accumulation to the acute event.

先天性疾病

胸主动脉瘤

定义

A thoracic aortic aneurysm is a dilation of the aorta within the chest caused primarily by intrinsic structural failure of the medial layer, frequently driven by genetic mutations affecting fibrillin-1 or TGF-β signaling rather than by atherosclerosis.

为什么这很重要

TAA can cause catastrophic dissection at smaller diameters and younger ages than AAA, making genetic awareness and early screening critical for active individuals.

运动员的主动脉:健康的心脏还是隐蔽的定时炸弹?

Threshold (Lactate Threshold)

定义

The exercise intensity at which lactate begins to accumulate in the blood faster than it can be cleared, marking the upper boundary of sustainable aerobic effort; riding at or near this intensity for one hour is the physiological challenge of the hour record.

为什么这很重要

Understanding lactate threshold explains why pushing even slightly too hard causes rapid fatigue and why precise pacing is critical in endurance events.

Read: The Hour That Would Not End

Threshold Model

定义

The threshold model of atherosclerosis proposes that plaque formation requires a sufficient concentration of atherogenic lipoproteins sustained over time; populations such as the Tsimane, who maintain very low lifetime LDL-C levels, demonstrate that even high systemic inflammation does not initiate significant atherosclerosis when the lipoprotein burden stays below this critical threshold.

为什么这很重要

The threshold model helps explain why starting lipid-lowering early in life may be far more protective than starting treatment after decades of elevated exposure.

胆固醇大谎言:揭露饮食行业的有组织否认

溶栓疗法

定义

Thrombolysis is the use of clot-dissolving drugs — sometimes called 'clot busters' — to break up the coronary artery blockage causing a heart attack, restoring blood flow to the heart muscle. It was one of the key rescue therapies that reduced heart-attack mortality in the latter decades of the twentieth century.

为什么这很重要

Thrombolysis was the first drug-based way to reopen a blocked artery during a heart attack, bridging the gap before emergency angioplasty became widely available.

心血管疾病史

Thromboxane A₂ (TxA₂)

定义

Thromboxane A₂ is a short-lived chemical released by activated platelets that amplifies platelet aggregation and causes blood vessels to constrict; aspirin's primary antithrombotic benefit comes from permanently blocking its production in platelets.

为什么这很重要

TxA₂ is the key driver of the platelet clumping that aspirin is designed to prevent, making it central to understanding the drug's mechanism.

每日阿司匹林究竟是在夺走你的生命还是在拯救你?最新科学研究怎么说。.

Time Trial (Cycling)

定义

A solo race against the clock in which riders start individually at set intervals and cover a fixed distance—here 10 miles—with the fastest elapsed time determining the winner; drafting off other riders is not permitted.

为什么这很重要

The time trial is the event in which Megdal finished 2nd, making it central to the article's cardiovascular-performance story.

Read: Peter Megdal gets second at National Championships

Time-Weighted Average ApoB

定义

Time-weighted average apoB is the cumulative apoB exposure divided by the duration of observation, providing a measure of sustained average atherogenic particle pressure that normalizes for how long a person has been followed; it is more informative than a single apoB reading but less complete than the full area-under-the-curve metric.

为什么这很重要

It offers a practical way to compare particle burden across people followed for different lengths of time.

载脂蛋白B:更长、更高、更糟

定时假设

定义

The timing hypothesis is the theory that menopausal hormone therapy is safest and most likely to benefit the heart when started soon after menopause, while blood vessels are still healthy and responsive to estrogen, rather than years later when atherosclerosis may already be established.

为什么这很重要

Understanding this concept explains why the same hormone can look harmful in one study and beneficial in another depending on when women started taking it.

Read: Does The New Estrogen Patch Prevent Heart Disease? The Complex Truth Explained

TLR4 (Toll-Like Receptor 4)

定义

A pattern-recognition receptor of the innate immune system that normally detects bacterial toxins but can also be activated by saturated fatty acids, triggering NF-κB signaling and cytokine production such as IL-6 and TNF-α.

为什么这很重要

It explains the molecular reason why high-fat meals promote inflammation and can destabilize existing plaques.

Read: Pathophysiological Determinants of Atherosclerotic Regression: The Criticality of Ultra-Low-Fat Whole-Food Plant-Based Nutritional Protocols

TMA Lyase (CutC/D)

定义

TMA lyase is a microbial glycyl radical enzyme encoded by the cutC and cutD genes that cleaves the carbon–nitrogen bond in dietary choline, releasing trimethylamine (TMA) gas as a byproduct; it is the rate-limiting enzymatic step in the gut-to-liver TMAO pathway and a primary pharmacological target for non-lethal microbiome inhibitors.

为什么这很重要

Blocking this single enzyme could reduce TMAO production without killing beneficial gut bacteria — a promising drug target.

牛排中的隐形毒素:肠道细菌如何引发心脏病

氧化三甲胺

定义

TMAO is a compound your gut bacteria produce from nutrients found in red meat, eggs, and some fish. Higher blood levels have been linked to heart disease.

为什么这很重要

Whether TMAO actually causes the damage or is simply a signal of a diet and gut pattern that does remains genuinely unsettled. Fish raises it more than steak does, which complicates the simple story considerably.

红肉正在通过你的肠道杀死你吗?关于TMAO的大骗局

TNF-α (Tumor Necrosis Factor-Alpha)

定义

A pro-inflammatory cytokine produced downstream of TLR4 activation that contributes to systemic and vascular inflammation; along with IL-6 it is implicated in weakening the fibrous cap of atherosclerotic plaques.

为什么这很重要

It is one of the specific inflammatory signals that links dietary fat intake to plaque rupture risk.

Read: Pathophysiological Determinants of Atherosclerotic Regression: The Criticality of Ultra-Low-Fat Whole-Food Plant-Based Nutritional Protocols

Tocilizumab

定义

A monoclonal antibody that blocks the interleukin-6 receptor (IL-6R), used clinically to treat rheumatoid arthritis and cytokine storm syndromes; its cardiovascular effects closely mirror those of the naturally protective Asp358Ala genetic variant, providing pharmacological validation of IL-6R blockade as an anti-atherosclerotic strategy.

为什么这很重要

Comparing drug effects to genetic variants helps researchers confirm that lowering IL-6 signaling genuinely reduces heart-disease risk, not just a marker of it.

阅读:基因彩票:为什么你不能指望自己“刀枪不入”

TOFI Phenotype

定义

TOFI (Thin Outside, Fat Inside) describes individuals with a normal BMI who nonetheless carry elevated visceral and intrahepatic fat, resulting in insulin resistance, dyslipidemia, and increased cardiometabolic risk that standard weight-based screening fails to detect.

为什么这很重要

The TOFI phenotype is a key reason doctors increasingly look beyond BMI when assessing a patient's true cardiovascular risk.

阅读:为什么腹部脂肪比你想象的更危险

Total Atheroma Volume (TAV)

定义

Total atheroma volume is an IVUS-derived absolute measure of the total three-dimensional volume of plaque within an imaged coronary segment, reported in cubic millimeters. Unlike PAV, TAV is not normalized to vessel size, so it captures the raw amount of disease removed or added over time.

为什么这很重要

TAV gives a concrete sense of how many cubic millimeters of plaque were gained or lost, making trial results easier to interpret.

Read: Exercise Doesn’t Erase Arterial Plaque – It Turns It to Stone!

Total Plaque Volume (TPV)

定义

A quantitative measure, obtained by AI-assisted CT angiography, of the combined three-dimensional volume of all atherosclerotic deposits across the coronary arteries; high TPV is the strongest independent imaging predictor of future myocardial infarction, conferring approximately a sevenfold increase in risk in SCOT-HEART.

为什么这很重要

Measuring total plaque volume gives a more complete picture of cardiovascular burden than any single plaque characteristic alone.

一种无需手术透视心脏的新方法——预测心脏病发作的最佳途径

Total Shoulder Replacement (Total Shoulder Arthroplasty)

定义

A surgical procedure in which the damaged ball-and-socket structures of the shoulder joint are replaced with prosthetic components; recovery involves an extended period of limited upper-body loading that can disrupt an athlete's overall training continuity.

为什么这很重要

Major joint surgery affects an athlete's ability to maintain cardiovascular conditioning and is relevant context for understanding training interruptions in older active adults.

Peter Megdal 于 2021 年 10 月 14 日创造了全国小时计时赛纪录

Track Coach (Cycling)

定义

A specialist coach with expertise in velodrome racing, including optimal pacing strategy, line selection, aerodynamic positioning, and the physiological demands of sustained maximal efforts such as the hour record.

为什么这很重要

Structured coaching is central to evidence-based exercise prescription, helping athletes safely maximise cardiovascular output without exceeding recovery capacity.

Peter Megdal 于 2021 年 10 月 14 日创造了全国小时计时赛纪录

超然冥想

定义

Transcendental Meditation (TM) is a specific meditation technique involving the silent repetition of a personally assigned mantra for around 20 minutes twice daily. The article notes that TM is the technique behind the most-cited trial claiming a large reduction in cardiovascular events — a result that weakened substantially under independent reanalysis.

为什么这很重要

TM has generated some of the boldest cardiovascular claims in the meditation literature; knowing it is a distinct, trademarked technique helps you assess those claims critically.

Read: Does stress kill you and does meditation save you?

Transdermal 17β-Estradiol

定义

Transdermal 17β-estradiol is the bioidentical form of the body's primary estrogen delivered through a skin patch directly into the bloodstream, bypassing the liver and its clot-promoting effects while still reaching vascular estrogen receptors.

为什么这很重要

It is the specific hormone formulation at the center of this article's argument for a safer cardiovascular profile.

Read: Does The New Estrogen Patch Prevent Heart Disease? The Complex Truth Explained

TRANSFORM Trial

定义

An ongoing large randomized controlled trial designed to test whether guiding clinical decisions with AI-assisted CCTA plaque staging actually reduces heart attacks and cardiovascular events compared with standard care.

为什么这很重要

It is the key unanswered study the article says must report before we know whether scanning people translates into saved lives.

一种无需手术透视心脏的新方法——预测心脏病发作的最佳途径

Transintestinal Cholesterol Excretion (TICE)

定义

Transintestinal cholesterol excretion is a pathway by which the body eliminates cholesterol directly through the intestinal wall into the gut lumen, independently of biliary secretion. It contributes to total fecal neutral sterol loss alongside the more widely known biliary route.

为什么这很重要

TICE represents an additional target for cholesterol-lowering strategies that bypass the liver, and its existence means fecal sterol loss cannot be attributed entirely to bile.

百万美元分子:为什么你的身体为胆固醇付出巨资

跨硫酸化途径

定义

The second metabolic pathway for clearing homocysteine, irreversibly converting it to cystathionine via the enzyme cystathionine β-synthase with vitamin B-6 (pyridoxal-5-phosphate) as cofactor; unlike remethylation, this route permanently disposes of homocysteine.

为什么这很重要

It explains why B-6 adds little to lowering a fasting homocysteine level unless a person is actually deficient.

补充L-甲基叶 folate + 活性B族维生素降低同型半胱氨酸能否帮助预防动脉粥样硬化并减少斑块?

TRAVERSE Trial

定义

The TRAVERSE trial was a large randomized controlled trial of approximately 5,200 middle-aged to older men at elevated cardiovascular risk that compared testosterone replacement therapy to placebo, finding no significant difference in rates of heart attack or stroke between groups; its results led the FDA to remove the boxed cardiovascular warning from testosterone products in 2025.

为什么这很重要

This trial is the primary reason the long-standing fear that testosterone therapy causes heart attacks has been largely dispelled.

Read: Testosterone Therapy and Your Heart: Why Your Total Score is Misleading

Treat-to-Target (Coronary Plaque)

定义

A management strategy in which serial quantitative plaque measurements guide therapy intensity, with the explicit goal of achieving a measurable reduction in total plaque volume rather than simply reaching a laboratory value such as LDL-C.

为什么这很重要

The article presents this as the clinical payoff of AI-QCT: patients can watch their 'grease' shrink in real numbers over time.

Read: The Future of Heart Disease Management

Triglyceride-Rich Lipoproteins (TRL) Remnants

定义

Triglyceride-rich lipoprotein remnants are the cholesterol-enriched particles left over after lipoprotein lipase partially digests VLDL and chylomicrons; human genetic evidence now supports a causal role for these remnants in atherosclerosis, independent of LDL, and genes such as APOC3, ANGPTL3, and LPL regulate their clearance.

为什么这很重要

Remnant particles can enter and damage artery walls much like LDL, making their clearance an important target for cardiovascular protection.

心血管保护的遗传架构

Triglyceride-Rich Lipoproteins (TRLs)

定义

Triglyceride-rich lipoproteins are a class of ApoB-containing particles—primarily VLDL and IDL—that carry large amounts of triglycerides and are produced in excess when the liver is overloaded, as in insulin resistance or obesity; their remnants are directly atherogenic and can access the arterial intima, contributing to risk that standard LDL-C measurement misses.

为什么这很重要

They explain why people with normal LDL-C but high triglycerides or metabolic syndrome can still have a dangerously high ApoB particle count.

年轻时(20多岁和30多岁)胆固醇高,即使日后降下来了,以后也会引发心脏病发作吗?

Triglyceride-to-HDL-C Ratio

定义

The triglyceride-to-HDL-C ratio is a simple blood-test calculation used as a surrogate marker of insulin sensitivity and atherogenic dyslipidemia; a low ratio is interpreted by Lipid Energy Model proponents as evidence of good metabolic health that may modify the cardiovascular risk of elevated LDL-C.

为什么这很重要

Proponents of the metabolic-context view cite this ratio to argue that not all high-LDL states carry the same risk.

Read: The Big Cholesterol Lie, Part 2

甘油三酯

定义

Triglycerides are the main form of fat in your blood and in your body's storage.

为什么这很重要

High levels usually signal that something metabolic is off — too much alcohol, insulin resistance, or excess calories. They also come packaged in particles whose leftovers can lodge in artery walls, so they carry risk of their own.

不要再迷信低密度脂蛋白(LDL)!关于载脂蛋白B(ApoB)、胰岛素抵抗与糖尿病的真相

Trimethylaminuria (Fish Odor Syndrome)

定义

Trimethylaminuria is a metabolic disorder caused by reduced FMO3 enzyme activity — often due to genetic polymorphisms — in which TMA cannot be efficiently oxidized to odorless TMAO in the liver, causing TMA to accumulate and be excreted through sweat, breath, and urine, producing a characteristic fishy odor.

为什么这很重要

It illustrates how individual genetic differences in liver metabolism can alter the TMAO pathway and affect health outcomes.

牛排中的隐形毒素:肠道细菌如何引发心脏病

Trophic Level

定义

A position in a food chain defined by the organism's primary energy source; animals at high trophic levels obtain most of their energy from other animals, and stable isotope data suggesting Neanderthals and early Homo sapiens had high trophic-level diets implies heavy reliance on animal foods.

为什么这很重要

Trophic-level data from fossils is central to the evolutionary case for higher protein intake.

Read: The Protein Debate

肌钙蛋白

定义

Troponin is a protein that leaks into the blood when heart muscle is damaged. A blood test for it is how heart attacks are confirmed.

为什么这很重要

Modern tests are so sensitive they can detect very small amounts, which sometimes turns up minor heart strain after extreme endurance events in otherwise healthy athletes.

齐曼人

定义

The Tsimane are an indigenous forager-horticulturalist population of the Bolivian Amazon whose traditional lifestyle—characterized by high physical activity and low average LDL cholesterol of around 91 mg/dL—is associated with markedly low rates of coronary calcification, with 85 percent of adults over 40 showing no detectable coronary calcium.

为什么这很重要

They serve as key evidence that extensive atherosclerosis is not an inevitable consequence of aging but is strongly shaped by lifelong risk-factor exposure.

先天性疾病

双阶梯框架

定义

The Two-Ladder Framework, as used in this review, is an analytical approach that evaluates dietary patterns on two separate evidence ladders—one for favorable changes seen on arterial imaging (plaque regression) and one for reductions in hard clinical events such as heart attack and death—preventing conflation of surrogate markers with meaningful patient outcomes.

为什么这很重要

It helps readers understand why a diet that shrinks a plaque on a scan is not automatically proven to prevent death, and vice versa.

Read: What is the difference between Mediterranean and whole-food plant-based diets for heart disease?

Type 2 Diabetes Remission

定义

A clinical state in which blood glucose falls below the diagnostic threshold for type 2 diabetes and is maintained without glucose-lowering medication; low-carbohydrate diets have been shown in trials to increase remission rates at six months, though the advantage narrows by twelve months.

为什么这很重要

The article highlights that keto's glucose benefit is real but time-limited, a distinction critical for patients weighing long-term treatment strategies.

生酮饮食 vs. 全食植物性饮食:关于运动表现、胰岛素敏感性、逆转心脏病和长寿的硬核证据是什么?

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U

U-Shaped (or Reverse J-Shaped) Hypothesis

定义

A proposed dose-response relationship between exercise volume and coronary atherosclerosis risk, in which moderate exercise is maximally protective but very high lifetime training volumes are associated with increased subclinical plaque burden in some individuals, mirroring the athlete paradox findings from cohorts such as Master@Heart.

为什么这很重要

This framework explains why 'more is always better' may not apply to extreme endurance training and why elite athletes still need heart screening.

Read: Coronary Calcium and Athletic Risk

国际自行车联盟

定义

The world governing body for competitive cycling, which ratifies official records—including the Hour Record—and sets the rules for elite and masters competition worldwide.

为什么这很重要

The UCI sanction is what makes Megdal's world record official rather than merely a personal best.

彼得·梅格达尔 (Peter Megdal) 登上《戴德姆时报》

英国生物样本库

定义

UK Biobank holds detailed genetic, lifestyle, and health data on half a million British volunteers, linked to their medical records.

为什么这很重要

Its size and genetic depth make it the workhorse behind much modern Mendelian randomization — the method that separates causes from coincidences.

不要再迷信低密度脂蛋白(LDL)!关于载脂蛋白B(ApoB)、胰岛素抵抗与糖尿病的真相

Ulcerative Colitis

定义

Ulcerative colitis is a chronic inflammatory bowel disease causing inflammation and ulceration of the colon lining; in the article it is the medical reason the index patient adopted a ketogenic diet, which then drove his extreme rise in LDL cholesterol.

为什么这很重要

Context for why the patient adopted the diet matters when evaluating whether his lipid pattern is relevant to broader dietary advice.

Read: Does metabolic health protect you from high cholesterol?

Ultra-Processed Foods

定义

Industrial food products formulated from refined ingredients and additives—such as emulsifiers, colorings, and flavor enhancers—with little resemblance to whole foods; both plant-based and animal-based ultra-processed products are associated with increased cardiovascular risk, validating the article's argument that processing level matters as much as food source.

为什么这很重要

Recognising ultra-processing as a cardiovascular risk factor independent of plant-vs-animal origin is central to the 'food quality' debate discussed in the article.

阅读:通过饮食治疗心脏病不仅是一种现代痴迷——它更是一种有数百万年进化历史支撑、并借助现代科学最先进手段的实践。

Umbrella Review

定义

A systematic review of multiple existing meta-analyses on a topic, providing a high-level synthesis of evidence across many studies; cited in the article to summarize findings on plant-based diets and cardiovascular outcomes.

为什么这很重要

Knowing what an umbrella review is helps readers judge why this type of evidence is considered especially comprehensive.

Read: Q&A: Can Your Love for Red Meat Be Dangerous?

未识别的心肌梗死

定义

An unrecognized myocardial infarction is a heart attack that occurred without being identified at the time, leaving a permanent scar on the heart muscle that is only discovered later through imaging or electrocardiography.

为什么这很重要

Knowing UMI exists helps explain why a fit athlete with no cardiac history can still carry hidden heart damage.

体质好如何掩盖心脏病发作

Unrestrained Lipolysis

定义

Unrestrained lipolysis is the excessive, insulin-independent breakdown of fat stored in adipose tissue, releasing a flood of free fatty acids into the bloodstream; in insulin resistance, the normal suppression of hormone-sensitive lipase by insulin fails, making this process continuous rather than tightly regulated.

为什么这很重要

It is the upstream trigger that overloads the liver with fat, driving the overproduction of atherogenic particles.

不要再迷信低密度脂蛋白(LDL)!关于载脂蛋白B(ApoB)、胰岛素抵抗与糖尿病的真相

不稳定型心绞痛

定义

Unstable angina is chest discomfort that appears at rest, comes on with less effort than before, or is suddenly getting worse.

为什么这很重要

Unlike stable angina, which is predictable, this pattern suggests a plaque has become active and a heart attack may be close behind. It is treated as an emergency.

Unstable Plaque

定义

An unstable plaque is an atherosclerotic lesion with a thin fibrous cap, a large lipid-rich necrotic core, and active inflammation, making it prone to rupture even when it is not large enough to meaningfully restrict blood flow or cause symptoms.

为什么这很重要

Knowing that dangerous plaques are not necessarily large ones reframes how heart attack risk should be assessed.

Read: You Feel Fine – That’s the Problem

Upstream Trait

定义

In causal biology, a characteristic or variable that sits earlier in the causal chain and drives downstream outcomes; the article uses this term to describe how genes for body composition and lean mass produce high VO₂ max as a secondary consequence.

为什么这很重要

Grasping the upstream/downstream distinction is essential to understanding why the article concludes that lifestyle behaviors matter more than the VO₂ max number itself.

Read: VO₂ max: the determinant of Health and Longevity?

Uremic Toxin

定义

A uremic toxin is a waste product that accumulates to harmful concentrations in the blood when kidney function is severely impaired and cannot clear it adequately; the article describes TMAO as behaving like a uremic toxin only at the very high, 'supraphysiological' levels seen in advanced kidney disease. At normal kidney function it is considered a harmless passenger.

为什么这很重要

The distinction matters because it explains why TMAO may be dangerous in dialysis patients but not in healthy people who eat fish or meat.

红肉正在通过你的肠道杀死你吗?关于TMAO的大骗局

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V

Vagal Tone

定义

The level of activity of the parasympathetic (vagus nerve) branch of the autonomic nervous system acting on the heart; high vagal tone slows the resting heart rate and is generally cardioprotective, but in extreme endurance athletes it has been proposed to contribute to atrial fibrillation risk.

为什么这很重要

Understanding vagal tone explains the nuanced risk of excessive endurance training, part of the U-shaped curve discussion in this article.

你的心脏比你更老吗?逆转心血管年龄的科学

Valsalva Maneuver

定义

The Valsalva maneuver is a forced exhalation against a closed glottis that occurs during heavy lifting; it sharply raises intrathoracic pressure during the strain phase, but the abrupt release afterward generates violent backward pressure waves in the aorta that can trigger intimal tears in a vulnerable vessel wall.

为什么这很重要

Understanding the Valsalva maneuver explains why the moment of releasing a heavy lift — not the lift itself — poses the greatest aortic risk.

运动员的主动脉:健康的心脏还是隐蔽的定时炸弹?

Vascular Aging

定义

The progressive structural and functional deterioration of arteries over time, characterized by loss of elasticity, increased stiffness, and accumulation of microscopic damage that makes arterial walls more susceptible to lipid deposition and chronic inflammation.

为什么这很重要

Understanding that aging itself changes the arteries explains why cardiovascular risk rises even in people who manage traditional risk factors.

Read: How Does Age Affect Atherosclerosis? A Q&A Explainer

Vascular Cognitive Impairment and Dementia (VCID)

定义

Vascular cognitive impairment and dementia is an umbrella term for cognitive decline caused primarily by cerebrovascular disease, encompassing a spectrum from mild impairment to severe dementia resulting from strokes, small-vessel disease, or chronic hypoperfusion.

为什么这很重要

The article positions VCID as a key intermediate outcome on the pathway from ApoB-driven arterial disease to the clinical syndrome often diagnosed as Alzheimer's.

阿尔茨海默病其实始于你的动脉吗?

Vascular Injury (Direct Vascular Injury)

定义

Physical or biochemical damage to the cells and structures of blood vessel walls — distinct from injury mediated through elevated cholesterol or other systemic risk factors — that can independently initiate or accelerate atherosclerotic plaque formation.

为什么这很重要

The finding that microplastics caused arterial damage without raising cholesterol points to a direct-injury mechanism that bypasses traditional risk pathways.

问答:日常微塑料是否在助长心脏病?

Vascular Memory

定义

The concept that cumulative exposure of arterial walls to atherogenic lipoproteins during childhood leaves a structural imprint—detectable years later as increased carotid intima-media thickness—that persists even if risk factors subsequently improve.

为什么这很重要

It explains why high cholesterol in a child matters decades before any symptoms appear.

Read: Do Babies Need Statins?

血管弹性

定义

Vascular resilience describes a phenotype in which an individual's arterial wall is relatively resistant to plaque development despite sustained exposure to elevated ApoB-containing lipoproteins; proposed mechanisms include reduced endothelial permeability, lower proteoglycan retention, or attenuated inflammatory signaling, though no clinical test currently identifies this trait.

为什么这很重要

Understanding that resilience delays but does not abolish atherosclerosis helps explain why a clean family history is reassuring but not a guarantee of lifelong protection.

基因好能战胜血脂差吗?

Vasomotor Function

定义

Vasomotor function refers to the artery's ability to relax and widen (dilate) or constrict in response to physiological signals, a capacity governed largely by the endothelium; in primate regression experiments, vasomotor responses improved within months of cholesterol lowering even before measurable plaque shrinkage occurred.

为什么这很重要

It explains why patients can benefit from treatment faster than imaging changes appear—a key practical takeaway from this article.

Read: Can heart disease be reversed?

Vasomotor Symptoms (VMS)

定义

Physiological events such as hot flashes and night sweats caused by instability in the hypothalamic thermoregulatory center during estrogen withdrawal; they can persist for many years and show significant variation by racial and ethnic group.

为什么这很重要

VMS are among the most common and disruptive menopausal symptoms, and their duration and severity have downstream effects on sleep, mood, and cardiovascular health.

绝经 内分泌 心血管 风险

Vasomotor Tone

定义

The degree of active contraction or relaxation of smooth muscle in the arterial wall that continuously adjusts lumen diameter in response to metabolic demand, endothelial signals such as nitric oxide, and neural input; improved vasomotor tone after lifestyle intervention can widen the functional lumen even without structural plaque loss.

为什么这很重要

It helps explain how lifestyle changes like the Ornish program can produce apparent lumen improvement through functional rather than purely structural changes.

Read: Reversal of Coronary Atherosclerosis: Mechanistic Insights from Human and Primate Studies

Velodrome

定义

An indoor or outdoor oval cycling track with steeply banked turns, purpose-built for track racing events such as the Hour Record; the banking allows riders to maintain high speeds through corners without losing traction.

为什么这很重要

The velodrome's geometry—banking angle, track surface, and line markings—directly determines strategy and record eligibility.

彼得·梅格达尔 (Peter Megdal) 登上《戴德姆时报》

Velodrome Track Temperature

定义

The ambient air temperature inside an indoor cycling track; warmer conditions reduce air density and aerodynamic drag—improving speed—but simultaneously raise cardiovascular and thermoregulatory stress, requiring athletes to balance performance gain against physiological cost.

为什么这很重要

Heat stress increases cardiac output demands and can compromise performance and safety in athletes with heart conditions.

阅读:彼得·梅格达尔 2022 年一小时纪录挑战

Venous Thromboembolism (VTE)

定义

Venous thromboembolism is a blood clot forming in a deep vein, most often in the leg, that can break off and travel to the lungs (pulmonary embolism); oral estrogen roughly doubles VTE risk by stimulating the liver to produce extra clotting factors, whereas transdermal estradiol does not significantly raise this risk.

为什么这很重要

VTE risk is one of the central trade-offs women and doctors must weigh when choosing between pill and patch formulations.

Read: Does The New Estrogen Patch Prevent Heart Disease? The Complex Truth Explained

Ventricular Fibrillation

定义

Ventricular fibrillation is a chaotic, disorganized electrical rhythm of the heart's main pumping chambers that produces no effective heartbeat and leads to loss of consciousness and death within minutes if not corrected by defibrillation.

为什么这很重要

It is the immediate electrical mechanism responsible for most sudden cardiac deaths, and understanding it explains why a defibrillator shock is the definitive treatment.

如何避免英年早逝

多功能蛋白聚糖

定义

Versican is a large sulfated proteoglycan found in the arterial intima whose negatively charged glycosaminoglycan chains bind ionically to apoB-100 on lipoprotein particles, contributing to their retention in the artery wall as an early step in atherosclerosis.

为什么这很重要

It is one of the molecular 'Velcro' components that traps lipoprotein particles in the artery wall before inflammation begins.

载脂蛋白B:更长、更高、更糟

Verve-101 (heart-1 Trial)

定义

The first-in-human clinical trial of an in vivo CRISPR base-editing therapy targeting the PCSK9 gene in liver cells, designed to permanently lower LDL-C with a single administration; it follows primate data showing durable cholesterol reductions without ongoing treatment.

为什么这很重要

Verve-101 represents the frontier of cardiovascular prevention—a potential lifelong solution delivered in one visit.

Read: The Cholesterol Breakthrough: From Daily Pills to Twice-a-Year Shots

VESALIUS-CV Trial

定义

VESALIUS-CV is a 2025 randomized trial of evolocumab added to optimized lipid therapy in high-cardiovascular-risk patients without prior myocardial infarction or stroke, showing that earlier and more aggressive ApoB lowering reduces atherosclerotic events.

为什么这很重要

It extends the case for aggressive ApoB lowering to people who have not yet had a heart attack or stroke.

为什么载脂蛋白B(ApoB)很重要?

Virtual Histology IVUS (VH-IVUS)

定义

A signal-processing technique applied to intravascular ultrasound data that color-codes plaque components—fibrous, fibro-fatty, necrotic core, and calcified tissue—without physical biopsy; it has been used in regression trials to show that intensive lipid lowering increases fibrous content and reduces necrotic core volume.

为什么这很重要

It allows researchers and clinicians to assess plaque composition non-destructively, confirming structural stabilization that angiography alone cannot reveal.

冠状动脉斑块消退、管腔悖论与运动员的血管重塑:整合药物与全食物植物性策略

Visceral Adipose Tissue (VAT)

定义

Visceral adipose tissue is fat stored deep within the abdominal cavity, surrounding organs such as the liver, stomach, and intestines; unlike subcutaneous fat just beneath the skin, it drains directly into the portal vein and is metabolically active, secreting hormones and pro-inflammatory signals that elevate cardiometabolic risk.

为什么这很重要

Understanding VAT explains why waist size and fat distribution predict heart disease risk better than body weight alone.

阅读:为什么腹部脂肪比你想象的更危险

内脏脂肪指数

定义

The Visceral Adiposity Index is a sex-specific mathematical score that combines waist circumference, BMI, triglycerides, and HDL cholesterol to estimate visceral fat dysfunction and cardiometabolic risk when direct imaging is unavailable.

为什么这很重要

It gives clinicians and researchers a practical way to quantify visceral fat burden without needing a CT scan or MRI.

阅读:为什么腹部脂肪比你想象的更危险

内脏脂肪

定义

See Belly Fat for the full entry.

Visibility Bias

定义

Visibility bias is the cognitive tendency to perceive only problems that produce noticeable symptoms or visible signs, while underestimating threats that are silent; in cardiovascular medicine it describes why patients often dismiss heart disease risk because they feel well, even though atherosclerosis typically develops for decades without any symptoms.

为什么这很重要

Understanding this bias explains why feeling healthy is not the same as being healthy when it comes to your arteries.

Read: You Feel Fine – That’s the Problem

VISP Trial

定义

A randomized trial of 3,680 stroke survivors that compared high-dose versus low-dose B vitamins over two years and found no reduction in recurrent stroke rates, with approximately 9 percent recurrence in both treatment groups.

为什么这很重要

It was one of the first large trials to directly test whether lowering homocysteine after stroke prevents further strokes, and its null result shaped subsequent research.

补充L-甲基叶 folate + 活性B族维生素降低同型半胱氨酸能否帮助预防动脉粥样硬化并减少斑块?

VITAL Trial

定义

A large randomized trial testing 1 g/day of combined EPA and DHA in a predominantly healthy population; it found no significant reduction in major cardiovascular events, illustrating that low-dose omega-3 supplementation is insufficient for cardiovascular protection.

为什么这很重要

VITAL demonstrates that dose matters—results from low-dose supplement trials cannot be extrapolated to high-dose prescription EPA therapy.

Read: Heart Disease and Fish Oil

维生素K2

定义

Vitamin K2 (menaquinone) is a fat-soluble cofactor required to activate Matrix Gla-protein, which inhibits vascular calcification; statin therapy may reduce vitamin K2 bioavailability as a byproduct of mevalonate pathway suppression, potentially influencing how calcium is deposited in plaques.

为什么这很重要

It is proposed as one mechanistic explanation for the statin–CAC paradox, where plaques calcify more densely under statin treatment.

雌激素能保护女性动脉免受斑块形成吗?

VO₂ Max (Maximum Oxygen Uptake)

定义

The maximum rate at which the body can consume oxygen during intense exercise, expressed in milliliters of oxygen per kilogram of body weight per minute; it is the gold-standard measure of cardiovascular fitness and aerobic capacity.

为什么这很重要

VO₂ max was the key metric that first signaled Dr. Megdal's decline and later confirmed his recovery after dietary change.

Read: How I Reversed My Heart Disease

VO₂ Max Test

定义

A cardiopulmonary exercise test that measures the maximum rate at which the body can consume oxygen during incremental exercise to exhaustion; it is the gold-standard index of aerobic fitness and, when combined with ECG monitoring, can also expose ischemia that appears only at near-maximum effort.

为什么这很重要

The VO₂ max test is what finally detected the author's ischemia after resting and sub-maximal tests appeared normal.

资深运动员的心脏病:我是如何逆转动脉阻塞并在65岁打破世界纪录的

Volume–Outcome Paradox

定义

The volume–outcome paradox is the observation that intensive lipid-lowering and anti-inflammatory therapy produce only modest reductions in measured plaque volume (typically 1–3%) yet yield 15–30% reductions in major cardiovascular events; the paradox is resolved by recognizing that the primary benefit comes from structural plaque stabilization — thickening of the fibrous cap, clearing of the nec…

为什么这很重要

It explains why imaging showing 'only a little' regression still translates into a dramatically lower risk of heart attack.

健美、迅捷且险些丧命:世界级自行车手如何发现隐匿性心脏病

Volumetric Plaque Quantification

定义

A computational technique, employed by AI-QCT platforms such as Cleerly, that measures the three-dimensional volume and composition of coronary plaque from CT data rather than relying on visual estimation of lumen narrowing.

为什么这很重要

It detects and characterizes plaque that the human eye misses on standard coronary CT scans, changing clinical management in a substantial proportion of patients.

Read: LDL “BAD” Cholesterol: Apolipoprotein B, Imaging Resolution, and the Illusion of “Normal” Coronary Arteries at Age 60

Voxel

定义

The three-dimensional equivalent of a pixel—a tiny cubic unit of volume in a CT dataset; AI-QCT analyzes each voxel individually to characterize tissue type within the coronary artery wall rather than relying on overall visual impression.

为什么这很重要

Understanding voxels explains why AI can detect plaque details invisible to the human eye on a standard scan.

Read: The Future of Heart Disease Management

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W

W·kg⁻¹ (Watts per Kilogram)

定义

A power-to-weight ratio used in cycling to normalize performance across riders of different body mass; it is the standard metric for comparing endurance cycling ability and correlates closely with VO₂max.

为什么这很重要

It allows a direct, fair comparison between athletes of different sizes and age groups, making it the benchmark for evaluating where any cyclist stands relative to peers.

精英老将自行车手的生理优化与寿命表现建模

壁面剪切应力

定义

Wall shear stress is the frictional force exerted by flowing blood on the inner surface of an artery; low, oscillatory, or multidirectional shear stress at arterial bends and bifurcations promotes endothelial dysfunction and plaque initiation, whereas high, uniform shear stress in straight segments is generally protective.

为什么这很重要

The article argues that high-speed, turbulent blood flow during intense exercise creates abnormal shear patterns at anatomically susceptible coronary sites, contributing to focal glycocalyx damage and plaque formation.

Read: Do endurance sports help or hurt arteries?

热身心绞痛

定义

Warm-up angina is the clinical phenomenon in which ischemic chest discomfort that appears at the start of exercise is reduced or abolished during a subsequent bout, due to collateral recruitment, ischemic preconditioning, and improved ventricular-vascular coupling. Its prevalence is reported in roughly 50–80% of patients with stable angina.

为什么这很重要

It creates a false sense of security for athletes: the pain goes away, but the underlying blockage remains, making it a particularly dangerous warning sign to dismiss.

运动如何阻断疼痛:运动员心脏的致命秘密

Warranty Period (CAC)

定义

An informal clinical term describing the duration over which a CAC score of zero reliably predicts very low cardiovascular event rates; a prospective study of 9,715 asymptomatic individuals found this period extends approximately 15 years in low-to-intermediate-risk populations, though it is shortened in diabetics and heavy smokers.

为什么这很重要

The warranty period concept helps clinicians and patients understand how long a zero score remains actionable without rescanning.

零的力量:没有钙 – 没有风险?

Wattage (Watts as Energy Output)

定义

In cycling, watts measure the mechanical power a rider produces; at the intensity required for an hour record, sustaining even a few additional watts over the full effort determines whether a world record is broken.

为什么这很重要

Power output is the most precise way to quantify cardiovascular and muscular effort, and is central to how exercise prescriptions are written in cardiac rehabilitation.

Read: Peter Megdal interviewed in Dedham Times

Watts (Power Output in Cycling)

定义

The unit used to quantify a cyclist's mechanical power output; in track racing, small differences in watts translate directly into measurable changes in speed and distance covered over an hour.

为什么这很重要

Megdal explains that temperature changes affect output by roughly five watts per ten degrees, illustrating how precisely power must be managed in record attempts.

彼得·梅格达尔 (Peter Megdal) 登上《戴德姆时报》

White-Matter Hyperintensities (WMH)

定义

White-matter hyperintensities are bright regions seen on MRI brain scans that reflect damage to the white matter of the brain, most commonly caused by chronic small-vessel disease and reduced blood flow.

为什么这很重要

WMH are a visible imaging marker of cumulative cerebrovascular injury and commonly coexist with both vascular dementia and Alzheimer's-type pathology.

阿尔茨海默病其实始于你的动脉吗?

Whitehall II Study

定义

Whitehall II is a long-running prospective cohort study of British civil servants, begun in 1985, that has been a major source of evidence on how occupational stress, social position, and biological markers relate to cardiovascular and other health outcomes. The article cites it for the finding that a flatter diurnal cortisol slope predicted cardiovascular mortality.

为什么这很重要

Whitehall II is one of the most influential cohort studies in cardiovascular epidemiology, and its name appears repeatedly in the stress-and-heart literature.

Read: Does stress kill you and does meditation save you?

WHO MONICA Project

定义

The WHO MONICA (Multinational MONItoring of trends and determinants in CArdiovascular disease) project was a large international study that tracked heart-attack rates and outcomes across dozens of populations from the 1980s to the 1990s, separating how much of the mortality decline came from fewer heart attacks versus better survival after one.

为什么这很重要

MONICA provided the clearest evidence that roughly two-thirds of the coronary mortality decline came from fewer events, not from better treatment — shaping how we understand prevention versus rescue.

心血管疾病史

Whole Food Plant-Based Diet

定义

A whole food plant-based diet is built from vegetables, fruit, beans, whole grains, nuts, and seeds, with animal products and processed foods largely removed.

为什么这很重要

The strictest versions are the only dietary approach that has been paired with imaging evidence of coronary plaque actually shrinking. Those studies were small and intensive, and the diets are demanding to sustain.

阅读:已被证实唯一能消除动脉斑块的饮食(不是地中海饮食!)

Wide-Detector CT (Wide-Area Detector CT)

定义

A CT scanner with a detector wide enough (typically 16 cm) to capture the entire heart in a single heartbeat, reducing motion-related 'stitching' artifacts and allowing high-quality coronary images at lower radiation doses in suitable patients.

为什么这很重要

The article explains that marketing terms like '640-slice' describe this detector architecture, and that the technology's real advantage is artifact reduction rather than inherently superior risk prediction.

一种无需手术透视心脏的新方法——预测心脏病发作的最佳途径

Women's Health Initiative (WHI)

定义

A large U.S. randomized controlled trial launched in the 1990s that examined the long-term health effects of hormone therapy in postmenopausal women; its 2002 report linking combined estrogen-progestin therapy to increased breast cancer and cardiovascular events dramatically shifted clinical prescribing practices, though subsequent analyses added important nuance.

为什么这很重要

The WHI remains the most influential study shaping current attitudes toward hormone therapy, so understanding what it found—and its limitations—is essential for any reader of menopause research.

绝经 内分泌 心血管 风险

Women's Health Study

定义

A long-term prospective cohort study of nearly 28,000 women; its 30-year follow-up, published in the New England Journal of Medicine in 2024, demonstrated that hs-CRP was a stronger predictor of cardiovascular events than LDL cholesterol, reshaping risk-stratification guidelines.

为什么这很重要

This trial is the central evidence base for the argument that inflammation markers belong alongside cholesterol in routine cardiac risk assessment.

炎症、脂蛋白与以低密度脂蛋白(LDL)为中心的时代的终结

Working Diagnosis

定义

A provisional clinical label applied when initial findings confirm a diagnosis (here, a true MI) but the underlying cause remains undetermined, explicitly signaling that further investigation is required rather than treatment being complete.

为什么这很重要

Knowing MINOCA is a working diagnosis helps patients advocate for continued evaluation instead of accepting 'clear pipes' as a final answer.

隐匿性梗死:MINOCA机制、诊断与管理的深入研究验证

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X

Xanthoma

定义

A xanthoma is a yellowish deposit of cholesterol that builds up in the skin or in tendons, most often around the knuckles, elbows, knees, or the Achilles tendon.

为什么这很重要

They are a visible sign of very high cholesterol, usually from an inherited condition. When they appear in a child, it points toward the severe inherited form and calls for urgent evaluation.

Read: Children With 60-Year-Old Arteries: The Extreme Reality of HoFH

Xeno-Antigen

定义

A foreign molecular structure recognized by the immune system as non-self; dietary Neu5Gc incorporated into human cell surfaces acts as a xeno-antigen because the human body naturally produces antibodies against it.

为什么这很重要

The immune system's reaction to this foreign tag is what triggers the chronic inflammation potentially linking red meat to heart disease.

Read: Q&A: Can Your Love for Red Meat Be Dangerous?

Xeno-Autoantigen

定义

A xeno-autoantigen is a foreign molecule that, once incorporated into the body's own tissues, is targeted by the immune system as if it were both self and non-self simultaneously; Neu5Gc functions as a xeno-autoantigen when it is metabolically embedded into the human vascular endothelium after red meat consumption.

为什么这很重要

This dual identity—foreign origin but self-location—is what makes the resulting immune attack on blood vessel walls uniquely damaging.

你的免疫系统在与你的牛排开战吗?

Xenosialitis

定义

Xenosialitis is a state of chronic, smoldering vascular inflammation that arises when dietary Neu5Gc from red meat is incorporated into human endothelial tissue and subsequently attacked by the body's own anti-Neu5Gc antibodies, which recognize it as a foreign 'xeno-autoantigen.'

为什么这很重要

This mechanism is proposed to explain cardiovascular events in people who lack conventional risk factors, linking red meat consumption directly to arterial inflammation.

你的免疫系统在与你的牛排开战吗?

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Z

Z-Score (Aortic)

定义

An aortic Z-score is a statistical measure that expresses how many standard deviations an individual's aortic diameter deviates from the mean expected for a person of the same age, sex, and body size, allowing clinicians to distinguish physiological athletic enlargement from pathological dilation.

为什么这很重要

Because elite athletes naturally have larger aortas, raw diameter measurements alone are misleading — the Z-score corrects for body size to reveal whether a 'big pipe' is healthy adaptation or early disease.

运动员的主动脉:健康的心脏还是隐蔽的定时炸弹?

零钙化积分

定义

A zero calcium score means a CT scan found no hardened plaque in your heart's arteries at all.

为什么这很重要

For most middle-aged adults this is genuinely good news and predicts a low risk over the next decade. It is not a permanent clearance, though. Young people and those with very high Lp(a) can carry soft plaque that a calcium scan cannot see.

零的力量:没有钙 – 没有风险?

零风险假设

定义

The zero-risk hypothesis proposes that atherosclerosis is not an inevitable consequence of aging but a substrate-dependent disease that requires sustained exposure to ApoB-containing lipoproteins to initiate; if lifelong circulating ApoB and LDL-C are kept near newborn baseline levels (roughly 10–20 mg/dL), the probability of initiating any atherosclerotic lesion approaches zero.

为什么这很重要

It reframes heart disease as potentially preventable from birth rather than an inevitable part of aging.

心脏病是一种选择吗?阻止斑块形成的‘零风险’秘诀

Zetia (Ezetimibe)

定义

An oral lipid-lowering drug that reduces LDL cholesterol by blocking the NPC1L1 transporter in the intestine, limiting the absorption of dietary and biliary cholesterol; it is often added to statin therapy when LDL targets are not met.

为什么这很重要

Identifying Zetia's mechanism helps readers understand how combining multiple drug classes can achieve very low LDL goals.

资深运动员的心脏病:我是如何逆转动脉阻塞并在65岁打破世界纪录的

齐替韦单抗

定义

An investigational monoclonal antibody that inhibits IL-6 signaling and is being evaluated in clinical trials for patients with chronic kidney disease and elevated CRP, representing a targeted pharmacological approach to reducing residual inflammatory cardiovascular risk.

为什么这很重要

It illustrates the next frontier of heart therapy—directly silencing the inflammatory pathway rather than only lowering cholesterol.

炎症、脂蛋白与以低密度脂蛋白(LDL)为中心的时代的终结

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AI应用

心脏风险计算器

带有H评分洞察、可视化家谱输入和可分享PDF报告的教育型家族病史心脏风险计算器。.

在此阅读为什么这款应用如此重要。.