Dean Michael Ornish (born July 16, 1953) 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. The author of ''Dr. Dean Ornish's Program for Reversing Heart Disease,'' ''Eat More, Weigh Less'' and ''The Spectrum,'' he advocates for diet and lifestyle changes he believes can treat and prevent heart disease.
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