EP141: What if Coronary Artery Disease is Not a Disease?

Welcome to my podcast. I am Doctor Warrick Bishop, and I want to help you to live as well as possible for as long as possible. I’m a practising cardiologist, best-selling author, keynote speaker, and the creator of The Healthy Heart Network. I have over 20 years as a specialist cardiologist and a private practice of over 10,000 patients. Podcast Summary Introduction Dr. Warrick Bishop is a practicing cardiologist and author dedicated to improving patient care through cardiac health education. In this episode, he presents a provocative conceptual framework: that coronary artery disease may not be a disease itself, but rather a maladaptive physiological repair process. He explores how cholesterol's natural role in cell membrane repair, when occurring in damaged arterial areas over an extended human lifespan, could lead to plaque formation. Key Takeaways: Cholesterol serves essential bodily functions including cell membrane construction, fat-soluble vitamin transport, and hormone formation—making it necessary for human health. Plaque formation in coronary arteries is highly focal and heterogeneous rather than evenly distributed throughout the arterial system, suggesting localized factors are at play. Local hemodynamic stresses—such as high blood velocity at arterial branch points and shear stress on the endothelium—may trigger localized cholesterol delivery as a repair mechanism. The body's cholesterol-delivery repair process may function normally in younger individuals but becomes maladaptive when humans live far beyond their evolutionary lifespan of 20-30 years. Coronary artery disease parallels other maladaptive physiological responses, such as blood clot formation, which evolved protectively but can cause life-threatening complications like pulmonary embolism. Individual variations in factors like inflammation, blood pressure, arterial anatomy, and cholesterol carriers (such as lipoprotein A) may determine whether the repair mechanism remains beneficial or becomes pathological. The "widow maker" phenomenon—where a single small plaque in one location can be fatal if it ruptures—supports the theory of localized rather than systemic disease mechanisms.