#O negative blood type diet lectins plus

The author claims that lectin-binding of the blood type antigens can set in motion processes that lead to disease. One central claim that we investigated is that blood type antigens, i.e., structures on the surface of cells that are affected by one’s blood type, interact with specific proteins in foods called lectins. The author outlines several biological mechanisms through which he claims an individual’s blood type can interact with specific foods to cause disease. This leads to the second claim we investigated, which is that people need to follow a specific diet based on their blood type to reduce these specific disease risks. A central claim is that an individual’s ABO blood type affects their risk of different diseases. Scientific AccuracyĪmong the many claims made, we decided to focus on those for which the book is most well-known. Since it was first published in 1996, more than 7 Million copies have been sold worldwide. I chose to review the book because I was interested in the biology of how blood types may affect our disease risk and our response to specific foods, and also because Eat Right 4 Your Type has been a very widely-read, influential diet book. Similarly, the book claims that responses to drugs, the need for specific supplements, and exercise needs differ according to one’s blood type. These include lower stomach acidity in Types A and AB compared to the others, or differences in the gut microbiota, all of which affect which foods are well tolerated versus which are problematic. The book also describes other biological differences that differentiate the blood types. The book claims that the blood type determines which lectin-rich foods someone can safely eat, and which foods can lead to illness or disease. These lectins are somewhat unusual proteins because they are known to resist digestion, enter the bloodstream, bind to the surface of cells, and trigger an inflammatory response from our immune system.

#O negative blood type diet lectins plus

Because of the shape of these proteins plus the specific sugars, these form antigens that our immune system can respond to, and that also can be bound by different proteins in our foods called lectins. Type B, while Type AB has both and Type O has none. These variations cause the enzyme to add different kinds of sugars in Type A vs. The simplified biology underlying the ABO blood types is that there are variations in an enzyme that adds sugars to proteins on the surface of cells. The ABO blood type is the most common blood typing system, classifying every person as Type A, Type B, Type AB, or Type O. D’Adamo claims that an individual’s blood type determines which specific foods are healthy or unhealthy. At the same time, foods recommended as “highly beneficial” tend to be rich in vitamins, minerals, and fiber, such that strict adherence to the guidelines likely leads to moderate health benefits.īottom line: There is little scientific evidence to support the book's claim that blood type diets provide benefits beyond those of a generally recommended healthy diet. Food restrictions may make it hard to meet certain nutrient needs.Because all four blood type diets are very restrictive, following the recommendations will be fairly difficult for most people.That said, there is also no evidence that blood types do not affect our response to specific foods.We could not find any evidence supporting the major claims that blood type determines whether a given food is healthy or unhealthy for us, or that dietary lectins cause disease in humans in a blood type-specific manner.The one exception is that there is fairly strong evidence that a person’s blood type affects their risk of some specific diseases. We reviewed three of the book’s key claims, and found that they were generally not well supported by scientific evidence.The book makes many specific claims, such as that our ability to digest animal protein depends on our blood type, or that specific proteins in foods called lectins can lead to disease, again depending on a person’s blood type. According to the book, our blood types differ partly as a result of what our ancestors ate, and they therefore tell us what we should eat today. D’Adamo, ND, argues that blood type is a major determinant of health.

63 How hard would it be to apply the book's advice? Fairly difficultĮat Right For Your Type, by Peter J.