Dr. William Li, founder of the Angiogenesis Foundation and author of Eat to Beat Your Diet, discusses how food and lifestyle influence cancer, aging, obesity, and chronic disease. He covers the effects of sugar, alcohol, poor sleep, stress, visceral fat, and microplastics, while highlighting the benefits of green tea, gut health, fasting, and nutrient-dense foods. The interview emphasizes disease prevention and the concept that food can be medicine.