DEAN ORNISH, M.D. & DR. JOHN WESTERDAHL
Dean Ornish, M.D., founder, president, and director of the Preventive Medicine Research Institute. 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. Dr. Ornish discusses reversing heart disease in Dr. John's Video Section.