A universal diet that is suitable for every individual could not be formulated. The reason why a particular diet is good for one and not much effective for the well being of another person is perhaps determined by the different blood types.
According to Peter J. D’Adamo, a naturopath who popularized the concept of blood type diet with his book, Eat Right for Your Type: The Individualized Diet Solution to Staying Healthy, Living Longer & Achieving Your Ideal Weight, the diet pattern of individuals should vary according to blood type.
Diet for blood type O
Blood type O is the oldest blood group in humans. The digestive system of people with O blood group is more attuned to the dietary habits of the ancient hunter and gatherer communities.
The diet of people with O type blood should primarily comprise of lean meat, fish and poultry. They should limit consumption of grains, legumes and breads. Thirty to forty five minutes of vigorous workouts, at least four times a week, will keep them in good health.
Diet for blood type A
The digestive system of people with A type blood are suited for carbohydrate digestion. They are more likely to benefit from a vegetarian diet. Grains, vegetables and soy proteins are more suitable for people with A type blood.
Eliminating meat and potatoes from the diet will improve their health condition and stimulate weight loss. Moreover, people with type A blood need 30 to 45 minutes of gentle exercises, at least three times a week.
Diet for blood type B
The gastrointestinal tract of people with B type blood closely resembles the GI tract of our nomadic ancestors. Low fat dairy products, eggs, green vegetables and mutton are beneficial for these people.
Wheat, lentils, buckwheat, corn, peanuts, sesame seeds, tomatoes and chicken should be eliminated from the blood type B diet. Moderate workouts especially hiking, cycling, tennis, golf and martial arts are beneficial for people with B type blood.
Diet for blood type AB
People with AB blood should avoid meat. They should include green vegetables, fish, seafood, tofu and low fat dairy in their daily diet. They should combine moderate aerobic workouts with calming exercises such as tai chi or yoga.