About the Authors Calvin Ezrin, M.D. FACP, FRCP is a research endocrinologist with over thirty years of experience helping patients lose weight. He is a clinical professor of medicine at UCLA and a long-standing member of the ADA and Endocrine Society. Dr.Ezrin is also the author several articles and medical textbooks.Robert E. Kowalski was a health writer and author of the number-one New York Times bestseller The 8-Week Cholesterol Cure.