David L. Katz, MD, MPH, FACPM, FACP, FACLM is a specialist in Internal Medicine, Preventive Medicine/Public Health, and Lifestyle Medicine – globally recognized for expertise in chronic disease prevention, health promotion, and nutrition. The founding director of Yale University’s Prevention Research Center , and past president of the American College of Lifestyle Medicine , Katz is founder of the non-profit True Health Initiative , founder of Diet ID , and Chief Medical Officer for leading food-as-medicine company, Tangelo . He is also a senior science advisor to Blue Zones . He holds multiple US patents, including for advances in dietary assessment. He has roughly 250 peer-reviewed publications, has authored 19 books- including multiple editions of a leading nutrition textbook, and has earned numerous awards for his contributions to public health, including three honorary doctoral degrees.