In this first appearance on the Rich Roll Podcast, we explore the difference between the science of disease and the science of health, while diving into the microbiome as a critical predictor of and against illness. We discuss the massive and misunderstood impact that industrial farming, chemical pesticides, pharmaceuticals, and errant Western medical practices have on both human and planetary health. Plus, we dive deep into autism, epigenetics, and the mechanics of intercellular communication.