The first science that understands you as a biochemical individual. Following decades of ongoing research and clinical work, Dr. D’Adamo created The Blood Type Diets, a way of eating and living that has transformed the health of millions, including myself. BLOOD TYPE O thrives on a lean, high protein diet. BLOOD TYPE A thrives on a primarily vegetarian diet. BLOOD TYPE B thrives on a mixed diet of meat, fish and dairy. BLOOD TYPE AB thrives on a modified vegetarian diet.