![]() ![]() But this effect was seen in everyone following the type A diet, not just individuals with type A blood ( 9). ![]() In a large observational study of 1,455 young adults, eating a type A diet (lots of fruits and vegetables) was associated with better health markers. However, there are no studies showing this to have anything to do with diet. There is now strong evidence that people with certain blood types can have a higher or lower risk of some diseases ( 6).įor example, type Os have a lower risk of heart disease, but a higher risk of stomach ulcers ( 7, 8). Research on ABO blood types has advanced rapidly in the past few years and decades. Most lectins are not blood type specific. Some foods contain lectins that may cause red blood cells to clump together. This may not even have any real-world relevance, because most legumes are soaked and/or cooked before consumption, which destroys the harmful lectins ( 4, 5). In other words, lectins in the diet are NOT blood-type specific, with the exception of a few varieties of raw legumes. Overall, however, it appears that the majority of agglutinating lectins react with all ABO blood types ( 3). There is actually evidence that a small percentage of lectins in raw, uncooked legumes, can have agglutinating activity specific to a certain blood type.įor example, raw lima beans may interact only with the red blood cells in people with blood type A ( 2). It is claimed that eating the wrong types of lectins could lead to agglutination (clumping together) of red blood cells. These substances are considered to be antinutrients, and may have negative effects on the lining of the gut ( 1).Īccording to the blood type diet theory, there are many lectins in the diet that specifically target different ABO blood types. Lectins are a diverse family of proteins that can bind sugar molecules. One of the central theories of the blood type diet has to do with proteins called lectins. The type A diet resembles a vegetarian diet, but type O is a high-protein diet that resembles the paleo diet. Maybe the reason for the health benefits is simply that you’re eating healthier food than before. So, even if you go on one of these diets and your health improves, it doesn’t necessarily mean that it had anything to do with your blood type. It closely resembles the paleo diet.įor the record, I think any of these dietary patterns would be an improvement for most people, no matter what their blood type is.Īll 4 diets (or “ways of eating”) are mostly based on real, healthy foods, and a huge step up from the standard Western diet of processed junk food. This is a high-protein diet based largely on meat, fish, poultry, certain fruits and vegetables, but limited in grains, legumes and dairy. They should avoid kidney beans, corn, beef and chicken. Foods to eat include seafood, tofu, dairy, beans and grains. Described as a mix between types A and B. However, they should avoid wheat, corn, lentils, tomatoes and a few other foods. These people can eat plants and most meats (except chicken and pork), and can also eat some dairy. This closely resembles a vegetarian diet. ![]() People who are type A should eat a diet rich in plants, and completely free of “toxic” red meat. Type A: Called the agrarian, or cultivator.This is how each blood type is supposed to eat: He claims that each blood type represents genetic traits of our ancestors, including which diet they evolved to thrive on. In this book, he claims that the optimal diet for any one individual depends on the person’s ABO blood type. It was a New York Times bestseller, sold millions of copies, and is still wildly popular today. His book, Eat Right 4 Your Type, was incredibly successful. The blood type diet, also known as the blood group diet, was popularized by a naturopathic physician called Dr. ![]()
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