These substances are considered to be antinutrients, and may have negative effects on the lining of the gut (1Trusted Source).”Īfter reading several articles about Dr Dr. 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. So eating foods certain foods not inherent to your genetic make up potentially creates issues and affects health. ABO research in themodern era of genomics.This theory of eating by blood types has been out since 1996 when a naturopathic doctor developed a theory where he claims that each blood type represents genetic traits of our ancestors, including which diet they evolved to thrive on. ABO genotype, ‘blood-type’diet, and cardiometabolic risk factors. Diet not working? Maybeit’s not your type. ABO blood group and risk ofcoronary heart disease in two prospective cohort studies. Blood type diets lacksupporting evidence: A systematic review. You can learn more about how we ensure our content is accurate and current by reading our editorial policy. Healthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical associations. The study didn’t find a link between the recommended diet and blood type, however. This will determine the effectiveness of the blood type diet.Īnother study in PLOS One maintained that the O blood type diet lowered serum triglycerides, consistent with other low-carbohydrate diets. The review concluded that there’s no current evidence that supports blood type diets.įurthermore, the theories behind the diet need to be studied by having two different groups of participants in a study, one that participates in the diet and one that doesn’t, all with the same blood type. In 2013, a systematic review in the American Journal of Clinical Nutrition looked at 16 previous studies on blood type diets. These principles are associated with many diets and are recommendations commonly given by doctors and nutritionists to improve or maintain health. One 2014 study states that the diet may be popular because it emphasizes eating whole foods, avoiding processed foods, and exercising. Many studies have debunked the diet while other studies have found some benefits of the diet unrelated to blood type. There’s no scientific evidence that supports the blood type diet. These associations with blood type are also not scientifically proven. In addition, D’Adamo associates certain health conditions with type O blood, such as digestive issues, insulin resistance, and a poor-performing thyroid. One study even states that the A blood type is the oldest. He says people with blood type O tend to have strength, be lean, and have a productive mind.

This might be because the diet promotes healthy eating and exercise, which provides health benefits for people, regardless of their blood type.ĭ’Adamo also claims that blood types represent the genetic traits of our ancestors, and his diet plans are based on what foods our ancestors thrived on.įor example, he claims that blood type O is the oldest blood type, associated with ancestors who were hunter-gatherers. In his book and website, he claims that following a specific diet and exercise regimen based on your blood type can optimize your health and reduce your chance of developing particular health conditions. Peter D’Adamo, a naturopathic physician and author of the book “Eat Right 4 Your Type.” The blood type diet was made popular by Dr.

Type o negative blood type diet