Blood Type Diet – Blood Type AB

By: Michael Lam, MD, MPH

Blood type ABs share attributes with other blood typesMultiple antigens make people with blood type AB sometimes behave A-like with weak stomach acid, and sometimes B-like with genetically programmed for the consumption of meats. It can be tricky to find the right balance of animal protein that will not create extra stress and cause dysfunction the the body’s NeuroEndoMetabolic (NEM) stress response. Type AB do best when their muscle tissues are slightly alkaline.

Type ABs can’t metabolize meat efficiently because of low stomach acid, so it is important to watch the portion size and frequencyChicken has lectin that irritates the blood and digestive tracts of Type ABs causing stress to the metabolic processes involved in nutrient intake. Tofu is a good protein supplements for Type ABs providing high quality protein without creating this extra stress. Other sources of protein such as Nuts, seeds, beans and legumes present a mixed picture for Type ABs. Eat nuts and seeds in small amounts and with caution.

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Type ABs can tolerate dairy foods fairly well. But watch out for excessive mucus production.Cultured or fermented dairy in particular should be easily consumed and digested for those with Type AB physiology, providing a rich source of nutrition without stressing the body.

Diet choices and blood type ABGenerally Type ABs do well on grains, even wheat, but keep in mind that the inner kernel of the wheat grain is highly acid forming in the muscle for Type ABs. This lowers the muscles’ potential, making it more difficult for the body to efficiently do physical activity and clear away byproducts of exertion. Keeping the muscles more alkaline lessens stress on the body even when exercising more. Type AB benefits from a diet rich in rice rather than pasta.

Type ABs has a weaker immune system, so you will benefit from the vegetables, which are high in phytochemicals. Fruits, especially those rich in vitamin C such as grapefruit, lemons and kiwis are also a strong contributor to immune health. A strong and smoothly functioning immune system is a critical component to a well balanced NEM stress response system. However, oranges can irritate the digestive system and interfere with nutrient absorption.

Furthermore The more alkaline fruits, such as grapes, berries and plums can help to balance the grains that are acid forming in the muscle tissues. Tomatoes do not impose any ill effects on Type ABs.

Type AB should begin each day by drinking a glass of warm water with the freshly squeezed juice of half a lemon to cleanse the system of mucus accumulated while sleeping.

More Information for Blood Type AB

Click here to see detailed Type AB Food Chart.

More information for the Blood Type Diet


  • Monica says:

    I am rh- (a-) blood type I want info on the diet

    • Dorine Lam RDN says:

      Dr peter D’Adamo’s book on Eat Right For Your Blood Type has some recipes and menu plans.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Jessica says:

    Hello! Are organ meats like chicken liver OK for AB blood type?

    • Dorine Lam RDN says:

      Calf liver can be taken occasionally for blood type AB. But chicken is to be avoided, so chicken liver would also be avoided.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Marcio Mateca says:

    I’m headed to gym more and trying to build my body more
    I’m in need of a lot more protein, is it ok to still eat the beef and pork?
    is there a way I can still do it without hindering my diet?

    • Dorine Lam RDN says:

      Beef and Prok is not recommended for Blood Type AB.
      For blood type AB – most important to avoid the following foods to lose weight: red meat, kidney beans, lima beans, seeds, corn and buckwheat.

      The easiest way to follow the blood type diet is to remember the foods to avoid and stay away from these foods for a few months. Observe your body and see how you have improved in your health.

      Blood Type Diet is based on how the protein in the food called lectin affects blood agglutination.The blood type diet is fitting for most of the people. Due to tremendous variation in individual constitution, there is no guaranteed success with it. If you would like to follow the blood type diet, I would recommend that you follow it vigorously for 3 months, even though you don’t see much harm or benefit in certain food. After 3 months, if you see no improvements in your health, then you can deviate and use the blood type diet as a general guideline and not overeat the foods that should be avoided for your Blood Type, but take them with care and in small amounts.

      Also follow the following as a guide: Blood Type AB

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Patty says:

    I just took a Asyra screening and the results indicated that I should follow the type AB plan. I don’t think my blood type is AB, I thought is it was O. Should I get a blood test before following the plan?

    • Dorine Lam RDN says:

      Yes, you should get a blood test to make sure.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist