David Heber, M.D., Ph.D., FACP, FASN, is professor emeritus and the founding director of the UCLA Center for Human Nutrition at the David Geffen School of Medicine, where he directed multiple National Institutes of Health (NIH)-funded research programs, including the UCLA Clinical Nutrition Research Unit, and the UCLA Dietary Supplements Research Center: Botanicals. He is currently chairman of the Herbalife Nutrition Institute. Heber has published more than 250 research papers and best-selling books for the public, including “What Color Is Your Diet?” and “The L.A. Shape Diet,” both of which have been translated into multiple languages internationally.