The Blood Type Diet by Peter D’Adamo is based on the premise that blood type is the most important factor in choosing a healthy diet. Based on this diet, you should eat foods that are non-toxic and beneficial according to your blood type. There are 4 diets recommended for each blood type.

Blood Type A Diet emphasizes vegetables, avoiding meats, following a more vegetarian food intake. Allowed foods include vegetables, tofu, grains, beans, fruits.