Dr. Ben Edwards returns to connect the dots from last week's conversation with Dr. Tom Cowan — and this episode covers a lot of ground. First, Dr. Ben reads two contrasting articles on sunscreen and skin cancer, including findings from a 470,000-person UK Biobank study showing dramatically higher skin cancer risk among frequent sunscreen users — even after accounting for major risk factors like skin type, sun exposure, and sunburn history. He explains why chemical sunscreens, vitamin D deficiency, and seed oil-saturated skin cells may all be converging to fuel the modern skin cancer epidemic.

Then Dr. Ben dives deep into the history of the cholesterol-heart disease theory — tracing it from a flawed rabbit study in the early 1900s to Ancel Keys' cherry-picked "Seven Countries Study," through a string of buried clinical trials and more than a dozen peer-reviewed studies that collectively call the entire saturated fat hypothesis into question.

He then builds a complete picture of what actually causes heart attacks: damaged glycocalyx, loss of structured water charge in the blood vessels, inflamed plaque rupture, cardiac muscle mitochondria flipping into anaerobic metabolism, and the underappreciated role of chronic fight-or-flight nervous system activation through the vagus nerve.

This is one of the most comprehensive episodes yet on cardiovascular disease — and it may permanently change how you think about cholesterol, sunlight, and the health of your heart.