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.

Blood type diet for o negative