Rexford Ahima, MD, PhD, is Professor of Medicine, Public Health, and Nursing, the director of the Division of Endocrinology, Diabetes, and Metabolism, the Bloomberg Distinguished Professor of Diabetes at the Johns Hopkins University, and the leader of the Johns Hopkins Diabetes Initiative. Dr. Ahima’s interdisciplinary work contributes to research, education, policies, and practices in weight management, diabetes, and related diseases. He is a member of the National Academy of Medicine, the American Society for Clinical Investigation, and the Association of American Physicians, and a fellow of the American Association for the Advancement of Science, the Obesity Society, and the American College of Physicians.