Author Archives: Peter Megdal PhD

What Peter Megdal’s World Hour Record Reveals About Aging, Fitness, and Cardiovascular Recovery

For decades, human athletic performance was assumed to follow a largely linear decline beginning in early adulthood. Conventional physiological models predicted that the cardiovascular system, pulmonary capacity, and skeletal muscle function would steadily deteriorate as cellular senescence accumulated.
The Bergström Study and the Paradigm Shift in Primary Prevention

The publication of the Bergström et al. study in the Journal of the American Medical Association (JAMA) on November 9, 2025, represents a landmark moment in the transition from population-based risk estimation to individualized, disease-based risk assessment.¹ This observational cohort study, conducted as part of the Swedish Cardiopulmonary Bioimage Study (SCAPIS), analyzed 24,791 individuals aged 50 to 64 years without established cardiovascular disease.
Heart Disease and The Fish-Oil Confusion, the Vascepa Controversy, and What the Evidence Actually Shows

For decades, cardiovascular medicine has been dominated by a single, often misunderstood narrative: “Fish oil is good for your heart.” This belief has become so culturally entrenched that it blurs the line between evidence-based cardiology and retail wellness, leading millions of people to consume omega-3 supplements daily in the hope of reducing cardiovascular risk.
Apolipoprotein B, Imaging Resolution, and the Illusion of “Normal” Coronary Arteries at Age 60. The clinical assertion that individuals maintaining markedly elevated levels of low-density lipoprotein cholesterol (LDL-C) and apolipoprotein B (ApoB) can possess anatomically “normal” coronary arteries at age 60 represents a diagnostic paradox.
If you’re an endurance athlete, you’ve probably had this moment: your fitness is undeniable—resting heart rate is low, VO₂ is high, your training log looks like a work of art—and then a blood test shows LDL (“bad cholesterol”) is higher than expected.

That can feel unfair. It can also trigger a very specific fear:
“If I take a statin, will I lose performance?”
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