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E204 – Dr. William Li: The Body's 5 Health Defense Systems, Cancer, Microplastics & Healing From the Inside Out
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About this episode
Dr. William Li is a Harvard-trained physician, co-founder of the Angiogenesis Foundation, and New York Times bestselling author whose work centers on one quietly radical premise: the power to stay healthy lives inside you. In this conversation, we explore the five hardwired defense systems the body runs continuously, angiogenesis, stem cells, the gut microbiome, immunity, and DNA protection, and what it looks like to actually support them through food, sleep, and daily choices. What We Dive Into: 1. You are not just one organism. You carry 39 trillion bacteria inside you, many of which send signals up through the vagus nerve directly to the brain, shaping mood, social behavior, and stress…