Mark Hyman, MD, is an American physician who is the founder and senior advisor for the Cleveland Clinic Center for Functional Medicine, founder and medical director of the UltraWellness Center and the host of The Doctor’s Pharmacy podcast and Chairman of the Food Fix Campaign dedicated to addressing our chronic disease epidemic by improving our food policies. He is the author of several books, most recently, Young Forever: The Secrets to Living Your Longest, Healthiest Life.