Mark HymanMark Hyman, MD, is the editor in chief of Alternative Therapies in Health and Medicine, the most prestigious journal in the field of integrative medicine. After ten years as co-medical director at Canyon Ranch in the Berkshires, he is now in rivate practice in Lenox, Massachusetts. He is the author of numerous books, including The Pegan Diet and Food Fix, and he is coauthor of the New York Times bestseller Ultraprevention. Visit his website DrHyman.com. Read More Read Less