Type A s can lose weight rapidly by eliminating meat from their diets. While animal foods speed up the Type O metabolism, they slow down the Type A metabolism. Meat products become stored as fat. This is mostly due to the fact that Type A s have low stomach-acid content and cannot digest meat as readily as their Type O counterparts. Type A s should stay away from meats and dairy and carefully monitor their intake of wheat germ and whole-wheat products.
Some wheat is fine, but too much makes the muscle tissue overly acidic.
Blood Type B was third to evolve. It is the most balanced of the blood types and has the most flexible dietary choices. It seems to be an evolutionary attempt to join blood types O and A polar opposites. The biggest sources of weight gain for Type B s are corn, buckwheat, lentils, peanuts, and sesame seeds. Each of these foods has a different lectin, but all affect the efficiency of the Type B metabolic process.