The Diet That Targets Cancer at Its Root: Cellular Aging | Dr Valter Longo

In this episode, longevity researcher Dr. Valter Longo reveals the science behind fasting and fasting mimicking diets—and why his groundbreaking research is changing the way hospitals and clinics approach cancer care, metabolic health, and healthy aging. We break down how fasting can help healthy cells become more resilient while making cancer cells more vulnerable, plus the surprising connection between nutrition, inflammation, and disease prevention.

Dr. Longo has spent decades leading research on aging, cancer, and longevity, and in this conversation, he shares practical insights on metabolic flexibility, protein intake, cellular repair, and the everyday habits accelerating chronic disease. You’re going to learn how strategic fasting impacts the body at a cellular level, why modern eating patterns may be shortening our lifespan, and simple ways to support long-term health, energy, and resilience. If you’re interested in cancer prevention, longevity science, fasting, and optimizing your health span, this episode is packed with eye-opening research and actionable takeaways.

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Timestamps:
00:00 – Introduction
01:38 – What Happens If We Eliminate Cancer Completely?
03:03 – Why Aging Matters More Than Smoking & Obesity
04:35 – The Problem With Modern Longevity Medicine
05:04 – The Dark Side of GLP-1 Weight Loss Drugs
06:49 – Muscle Loss, Aging & Long-Term Health Risks
08:07 – Why Cancer Rates Keep Rising Worldwide
09:07 – The Truth About Protein, Diet & Cancer Risk
10:04 – What Happens When Traditional Diets Become “Westernized”
14:16 – Why Fasting Mimicking Diets Could Change Cancer Treatment
16:16 – The Science Behind the Fasting Mimicking Diet
18:35 – How Fasting Protects Healthy Cells & Targets Cancer Cells
20:25 – Why Cancer Cells Can’t Survive Fasting Conditions
25:03 – Can the Longevity Diet Help Prevent Cancer?
34:40 – The Shocking Study on Fasting & Junk Food Diets
39:10 – The Connection Between Insulin Resistance & Cancer Growth
45:39 – Why Extreme Fasting Can Backfire on Your Metabolism
51:12 – Best Foods for Longevity, Fasting & Disease Prevention
58:45 – Dr. Longo’s Documentary, Clinical Trials & Cancer Breakthroughs

Shawn Stevenson is the author of the USA Today National bestsellers Eat Smarter and the Eat Smarter Family Cookbook, as well as the international bestselling book Sleep Smarter. He’s also the creator of The Model Health Show, featured as the number #1 health podcast in the U.S. with millions of listener downloads each year. A graduate of the University of Missouri–St. Louis, Shawn studied business, biology, and nutritional science and became the cofounder of Advanced Integrative Health Alliance. Shawn has been featured in Forbes, Fast Company, The New York Times, Muscle & Fitness, Good Morning America, ESPN, and many other major media outlets.

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