Steven Grinspoon is an American physician who is a Professor of Medicine at Harvard Medical School, Chief of the Massachusetts General Hospital (MGH) Metabolism Unit and Director of the Nutrition and Obesity Research Center at Harvard. In addition, he is the MGH Endowed Chair in Neuroendocrinology and Metabolism. His work investigates the neuroendocrine regulation of body composition, and physiological consequences of fat distribution on cardiovascular disease and inflammation.[1] In 2015, he became the Principal Investigator of the NIH-funded Nutrition Obesity Research Center at Harvard.[2]