It is worth noting again that there is little reliable evidence to support the use of this diet. Read more about the lectin-free diet here.Īccording to proponents of the diet, people with blood type O should eat and avoid certain foods. Despite this, the study authors concluded that the drop in triglyceride levels occurred due to factors unrelated to a person’s blood group. However, no research to date suggests that lectins affect people in specific blood groups differently.Ī 2014 study showed that adhering to the blood type O diet reduced levels of triglycerides in the blood, the storage form of fat. As a result, he recommends specific diets for people with these different blood types. The effect that this produces on the body is similar to that of a foreign substance being present.ĭ’Adamo suggests that people with different blood types react differently to particular types of food and their lectins. The protein binds to cells within the body, causing them to clump together, which can potentially lead to hormonal disruptions. Lectins have a direct effect on the blood and the digestive tract. The researchers suggested that those in the AB blood group are three times as likely as those in other blood groups to have a psychiatric disorder.Īccording to D’Adamo, a chemical reaction occurs when the blood comes into contact with certain foods, specifically with a protein called lectin. The results of an earlier study suggested that people belonging to the A, B, or AB blood groups have an increased risk of coronary heart disease.Ī 2019 study in Croatia also found an association between the AB blood type and the risk of psychiatric disorders. A large genetic study from 2019, for example, found that people with type A and AB blood have an increased risk of gastric cancer. Share on Pinterest A person on a O blood type diet can eat most types of vegetables.ĭifferent blood types may make people more or less susceptible to certain conditions. We also look in more detail at the proposed benefits of eating for the O positive and negative blood types and discuss which foods a person following this diet should eat and avoid. In this article, we explain why some people believe that their blood type should influence their diet. For example, the authors of a 2014 study concluded that their findings did not support the claims that a blood type diet provides specific benefits.Ī 2013 review of data relating to the blood type diet also found that no evidence is currently available to verify the benefits of this eating plan.
However, research on the effects of a blood type diet is scarce, and the studies available have not proven its effectiveness. While people may report improved health with this diet, it may occur due to them adopting a generally healthful diet.Ī naturopath called Peter D’Adamo popularized the idea that a diet based on blood type could help a person achieve good overall health and reduce the risk of developing certain diseases. The O blood type diet refers to an eating plan specifically for those with type O blood.
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