Dean Ornish, MD, is the founder, president, and director of the non-profit Preventive Medicine Research Institute in Sausalito, California, where he holds the Safeway Chair. He is Clinical Professor of Medicine at the University of California, San Francisco. Dr. Ornish received his medical training from the Baylor College of Medicine, Harvard Medical School, and the Massachusetts General Hospital. For the past 28 years, Dr. Ornish has directed clinical research demonstrating, for the first time, that comprehensive lifestyle changes may begin to reverse even severe coronary heart disease, without drugs or surgery.