Dean Ornish is an American physician and researcher. He is the president and founder of the nonprofit Preventive Medicine Research Institute in Sausalito, California and a Clinical Professor of Medicine at the University of California, San Francisco. He is a well-known advocate for using a plant-based diet and healthy lifestyle changes to treat and prevent heart disease.
Dean Ornish earned a B.A. in Humanities summa cum laude from the University of Texas in Austin, where he gave the baccalaureate address. He received his M.D. from the Baylor College of Medicine, he was a clinical fellow in medicine at Harvard Medical School, and he completed an internship and residency in internal medicine at the Massachusetts General Hospital.