Dean Ornish, M.D., is the founder and president of the Preventive Medicine Research Institute in Sausalito, California and Clinical Professor of Medicine at the University of California, San Francisco. For over 30 years, Dr. Ornish has directed clinical research demonstrating that comprehensive lifestyle changes may begin to reverse even severe coronary heart disease, without drugs or surgery. Medicare has recently agreed to provide coverage for this program, the first time that Medicare has covered such treatment. His work has also demonstrated that appropriate lifestyle changes may stop or reverse the progression of early-stage prostate cancer. His recent research has illuminated the actual genetic mechanism by which healthy habits prevent disease and prolong life. Dr. Ornish has shared his findings with the general public in series of bestselling books, including: Eat More, Weigh Less; Love and Survival; and his most recent book, The Spectrum. _ In this video podcast, recorded at the 2002 International Achievement Summit in Dublin, Ireland, Dr. Ornish makes a slide presentation, outlining the basic principles of preventive medicine, and the simple lifestyle changes that can reduce the present rates of lethal ailments such as heart disease and cancer.