Further, there are studies that show your blood type can have an effect on your health.įor example, type Os are thought to have less chance of coronary artery disease but more chance of peptic ulcers -so it’s not impossible that D’Adamo’s theory could be correct. However, the idea is popular, and followers say they feel better adapting their diet to their blood type. There’s no medical research that indicates eating an O positive blood type diet or an O negative blood type diet will improve your health. The O blood type diet has no scientific backing. RELATED: Eating for Your Blood Type-B+ & B- Does the O Blood Type Diet Work? His theory suggests that blood type O positive and O negative people have hunter-gatherer digestive systems that handle meat and fish better than carbs, grains, and dairy. Rarer type B blood types are thought to descend from the ancient nomadic tribes that consumed dairy from their herds. These early type O humans ate a hunter-gatherer diet of animal protein, but as they moved into a society that put down roots and farmed crops, their blood evolved into type A to help them digest carbohydrate, fruits, and vegetables. Type O has been traced back as far as Cro-Magnon man in 40,000 BC (although there is debate over whether type A is the earliest blood type). He suggests that O was the first blood type.
The “Eat Right For Your Type” diet was created by Peter J. The blood type diet is a theory that your blood group reveals the dietary habits of these predecessors. Your blood group is determined by the genes you’ve inherited from your parents, and this stretches right back to your stone-age ancestors. There are eight different blood groups: A, B, AB, and O each group can be either RhD positive or RhD negative. RELATED: What Are the Blood Types Really for? What’s the O Blood Type Diet About? It certainly makes a difference when it comes to transfusions, and studies show some blood groups are more at risk of certain diseases-but there’s also an interesting theory that eating foods compatible with your blood type can make you healthier. The study didn’t find a link between the recommended diet and blood type, however.Have you ever wondered whether your blood type makes a difference to your health? 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 those 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 on his 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.Īlthough there’s no scientific evidence behind this diet, it has nonetheless become quite popular. 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.
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