Mark HymanMark Hyman, MD, is the Director of the Cleveland Clinic Center for Functional Medicine, the chairman of the Institute for Functional Medicine, and founder and medical director of The UltraWellness Center. He is the #1 New York Times bestsellng author of The Blood Sugar Solution 10-Day Detox Diet, The Blood Sugar Solution, The Blood Sugar Solution Cookbook, Ultrametabolism, The Ultramind Solution, The Ultrasimple Diet, and coauthor of The Daniel Plan and Ultraprevention. Read More Read Less