Blood Type Diet – Blood Type B

By: Michael Lam, MD, MPH



Diet considerations for blood type BThe sturdy and alert Type Bs are usually able to resist many of the most severe diseases common to modern life, such as heart disease and cancer. In fact, a Type B who carefully follows the recommended diet can often bypass severe disease and live a long and healthy life. Type Bs are more prone to immune-system disorders such as multiple sclerosis, lupus, and chronic fatigue syndrome.

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The Type B Diet is balance and wholesome, including a wide variety of foods.

For Type Bs, the biggest factors in weight gain are corn, buckwheat, lentils, peanuts and sesame seeds. These foods have different lectin that affect the efficiency of the metabolic process, resulting in fatigue, fluid retention, and hypoglycemia. The gluten lectin in wheat germ and whole wheat products also adds to the problems cause by other metabolism-slowing foods.

Learn to eat right for your blood type BIt is important to leave off chicken for Type Bs. Chicken contains a Blood Type B agglutinating lectin in its muscle tissue, which attack the bloodstream and potentially lead to strokes and immune disorders. Type Bs thrive on deep-ocean fish, but should avoid all shellfish. The shellfish contain lectins that are disruptive to the Type B system.

Type B is the only blood type that can fully enjoy a variety of dairy foods. Most nuts and seeds (especially peanuts, sesame seeds and sunflower seeds) are not advised for Type Bs, they contain lectins that interfere with Type B insulin production.

Wheat is not tolerated well by most Type Bs. They contain a lectin that reuce insulin efficiency and failure to stimulate fat “burning”. Rye contains a lectin that settles in the vascular system, causing blood disorders and potentially strokes. Corn and buckwheat are major factors in Type B weight gain, they contribute to a sluggish metabolism, insulin irregularity, fluid retention, and fatigue.

Blood type B diet rulesEliminate tomatoes completely from Type B diet. It has lectins that irritate the stomach lining. Fruits and vegetables are generally well tolerated and should be taken generously.

The benefits of this kind of diet for those with Blood Type B suggests this blood type may be associated with certain characteristics of the stress response. In general, the body handles and counteracts stress through the neuroendometabolic (NEM) response circuits, functional groups of organs and systems in the body that work in concert to prevent stress from destabilizing the body’s homeostasis and negatively affecting its functions.

There are limits to the human body’s ability to tolerate stress, however, and if the level of stress remains high and overtops the capacity of the NEM circuits, the constituent organs and systems will begin to wear down and malfunction, bringing up unpleasant symptoms of excessive stress.

The Blood Type B diet calls for many foods that help the metabolism to function smoothly, which is very helpful for the metabolic response circuit of the NEM. Ensuring the continued function of metabolic processes in the body is important to avoid the metabolic symptoms of stress including irritable bowel syndrome (IBS), weight gain and excessive inflammation. However, it is just as important to ensure the rest of the NEM circuits remain functional and operating smoothly. This entails making sure that excessive levels of stress do not encroach on your daily life. A combination of a proper low stress lifestyle and a diet matching your blood type – in this article specifically referencing Type B – will help to ensure optimal function in the body.

More Information for Blood Type B

See Detailed Type B Food Chart
A comprehesive list of what foods to eat on a Blood Type Diet




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9 Comments

  • CARLY says:

    I’m an Africa American woman with B- blood type. I’ve given up meat because of weight gain and inability to lose weight. I’m getting my protein from quinoa and Bulgar, faro, and beans. I’m not sure if these are buckwheat. So a little help on my diet would be nice.

    • Dorine Lam RDN says:

      No, they are not buckwheat.

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

    • Sidney says:

      Carly, I too am AA, a B, and started the diet 2-3 years ago. Before it I was not eating meat, but because of it I started to eat meat and have lost as well as maintained my weight (for the most part). Consider being specific with the meats you eat just as the diet says.

  • Shelia Whorton says:

    Dr. Lam: I am B positive. I eat a lot of quoina. Is that okay?

    Thank you.

  • Jeannie says:

    I don’t like lamb , rabbit , venison also it’s not in the grocery store .

  • Cheta Balizer says:

    Do you have any recipes for B + bloodtype? My staples in life have been pinto beans, avocados, corn tortillas, tomatoes and coconut oil, peanut butter, sesame seeds, & sunflower seeds. So could really use some ideas about meals on this new diet. Thank you so much.