The blood type diet, also known as the blood group diet, was popularized by a naturopathic physician called Dr. Peter D’Adamo in the year 1996.

The blood type diet is based on your blood type. If your blood type is A, you should eat vegetarian foods, if it is type O, you should eat mostly meat and not eat grains, and if it is type B, you can eat many types of food, such as dairy, which you cannot eat for type A and O.

This is how each blood type is supposed to eat:

Any of these dietary patterns would be an improvement for most people, no matter what their blood type is.

All 4 diets (or “ways of eating”) are mostly based on real, healthy foods and a huge step up from the standard Western diet of processed junk food.

So, even if you go on one of these diets and your health improves, it doesn’t necessarily mean that it had anything to do with your blood type.

Maybe the reason for the health benefits is simply that you’re eating healthier food than before.