Dr. Dean Ornish is the first clinician to offer documented proof that heart disease can be halted, or even reversed, simply by changing your lifestyle. Based on his internationally acclaimed scientific study, which has now been ongoing for years, Dr. Ornish's program has yielded amazing results. Participants reduced or discontinued medications; their chest pain diminished or disappeared; they felt more energetic, happy, and calm; they lost weight while eating more; and blockages in coronary arteries were actually reversed.