![]() 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. How many calories do I need to burn?.The O blood type diet refers to an eating plan specifically for those with type O blood. 2020–2025 Dietary Guidelines for Americans. ![]() Department of Health and Human Services and U.S. Journal of the Academy of Nutrition and Dietetics. Blood type is not associated with changes in cardiometabolic outcomes in response to a plant-based dietary intervention. doi:10.1371/journal.pone.0084749īarnard ND, Rembert E, Freeman A, Bradshaw M, Holubkov R, Kahleova H. ABO genotype, 'blood-type' diet and cardiometabolic risk factors. Wang J, García-Bailo B, Nielsen DE, El-Sohemy A. Defining the optimal dietary approach for safe, effective and sustainable weight loss in overweight and obese adults. Koliaki C, Spinos T, Spinou Μ, Brinia Μ-E, Mitsopoulou D, Katsilambros N. Diet and exercise in management of obesity and overweight. Blood type diets lack supporting evidence: A systematic review. Another 2020 review also found that there are no cardiometabolic benefits to be gained from the blood type diet.Ĭusack L, De Buck E, Compernolle V, Vandekerckhove P. ![]() In this review, scientists looked at 16 previously published reports on the blood type diet. Not backed by evidence: A research review published in 2013 no evidence to support any of the health claims associated with the blood type diet.Can be restrictive: Since the diets prescribed for blood types A and O are restrictive, there's some concern that individuals following these diets may fail to achieve sufficient intake of many vitamins and minerals that are essential for health.Requires unsubstantiated supplements: Although proponents of the blood type diet suggest that the use of dietary supplements can help people following the diet plan meet their nutritional needs, such supplements are not regarded as a reasonable substitute for a healthy, balanced meal plan.Anyone following some of the diets, no matter their blood type, may either see benefits or no changes, according to the study. The available research on the blood type diet includes a study published in the journal PLoS One in 2014. Not based on science: Eating for your specific blood type is not rooted in science.Not effective: There is no research to support that the blood-type diet is an effective weight-loss strategy. ![]()
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