The Blood Type B Diet is one of four subsets of the Blood Type Diet devised by naturopath Peter J. D’Adamo. By combining theories of anthropology and nutrition, the diet outlines a number of foods that D'Adamo claims benefit different individuals based on their blood type. Since the Blood Type B Diet emphasizes calorie-rich foods such mutton, goat and lamb, it should be relatively easy for weight gainers on the Blood Type B Diet to see positive results. Unfortunately, none of the diet’s purported health benefits are supported by science, and dieters are encouraged to talk to their doctors before adopting a diet based on blood type.
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The Blood Type Diet determines exercise and diet recommendations depending on which blood type you have. Of the four basic blood types – O, A, B and AB – type-B individuals are believed to be more sensitive to lectins in select foods, according to the Eat Right for Your Type website. This Blood Type Diet claims that these foods may result in inflammation in the body, increasing your risk of developing slow-growing viruses, such as multiple sclerosis or lupus. Again, none of these claims are supported by research or peer-reviewed studies.
Recommended Foods of the Blood Type B Diet
Blood type B was purportedly developed in peoples living in the Himalayan highlands, now part of Pakistan and India. Based on this presumption, the Blood Type B diet recommends foods that are abundant in these areas, such as rabbit, venison, goat, mutton, lamb, dairy, eggs and green vegetables. In contrast, some foods contain agglutinating lectin, a chemical that purportedly attacks your blood stream and increases your risk of immune disorders. Type B individuals are advised to avoid these foods, including chicken, corn, wheat, buckwheat, tomatoes, peanuts, lentils and sesame seeds.
Regardless of which diet philosophy you adopt, weight gain ultimately comes down to numbers. According to MayoClinic.com, each pound of fat requires a calorie surplus of 3,500. In other words, to gain weight, you need to consume more calories than you burn up each day. Since the Blood Type B Diet encourages the consumption of meat and dairy, you can easily gain weight by adding these calorie-rich foods to your daily diet. If you still have difficulty gaining weight, try increasing your portion sizes or adding more meals to your day. Since exercise and physical activity can help inhibit your weight gain, you may want to limit the amount of intensive aerobic activity you perform until you reach your weight goals.
Despite its purported use of anthropology and biochemistry, the Blood Type Diet has not been tested for accuracy or effectiveness. Talk to your doctor or dietitian before making any drastic changes to your diet to reduce your risk for nutrient deficiency.