Steven B. Heymsfield, M.D. is Boyd Professor and former Executive Director of Pennington Biomedical Research Center in Baton Rouge, Louisiana. Dr. Heymsfield’s research interests cover topics including obesity, malnutrition, cancer, body composition, and caloric expenditure. His contributions to human nutrition research led to the TOPS Award from The Obesity Society (TOS), Rhoads Award from the American Society of Parenteral and Enteral Nutrition (ASPEN), Robert H. Herman Memorial Award, American Society of Nutrition (ASN), and George Bray Founders Award from TOS. Dr. Heymsfield is past president of ASPEN, ASN and TOS. He was appointed an Amazon Scholar in 2021.