Dean Ornish, M.D., is the founder and president of the non-profit Preventive Medicine Research Institute and Clinical Professor of Medicine at the University of California, San Francisco.

His recent research showed that comprehensive lifestyle changes affect gene expression, “turning on” disease-preventing genes and “turning off” genes that promote cancer and heart disease, as well as the first study showing that these lifestyle changes may begin to reverse aging by lengthening telomeres, the ends of our chromosomes which control aging (in collaboration with Dr. Elizabeth Blackburn, awarded the Nobel Prize in Medicine).

He is the author of six books, all national bestsellers, including: Dr. Dean Ornish’s Program for Reversing Heart Disease; Eat More, Weigh Less; Love & Survival; and his most recent book, The Spectrum. The research that he and his colleagues conducted has been published in the Journal of the American Medical Association, The Lancet, Proceedings of the National Academy of Sciences, Circulation, The New England Journal of Medicine, the American Journal of Cardiology, The Lancet Oncology, and elsewhere. He has written a monthly column for Newsweek and Reader’s Digest magazines, is currently Medical Editor of The Huffington Post and writes a regular column for TIME magazine.

Dr. Ornish was appointed by President Clinton to the White House Commission on Complementary and Alternative Medicine Policy and by President Obama to the White House Advisory Group on Prevention, Health Promotion, and Integrative and Public Health. Dr. Ornish was chosen by LIFE magazine as “one of the fifty most influential members of his generation” and by Forbes magazine as “one of the world’s seven most powerful teachers.”

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