The Blood Type Diet

Who was it created by?

The Blood Type Diet created by Peter J. D’Adamo and advocated by many other authors is based on a theory of eating according to your blood type O, A, B or AB.


What does it claim to do?

Peter J. D’Adamo claims that our bodies react differently to the foods we eat depending on which blood type you are. He believes there is a direct link between your blood type and the chemical reaction you have and the foods you eat. It's this chemical reaction that is said to have a negative effect on certain organs and parts of the body.
D'Adamo's theory is that following a specific meal plan based on your blood will avoid these damaging chemical reactions and provide a better environment in the body. Therefore giving you a better chance of achieving your goal of losing weight, gaining muscle, improving digestion or even having more energy.


What do you eat & drink?

So what should you be eating or drinking when you’ve found out your blood type?
D’Adamo’s Blood Type Diet is based around three food groups. These are foods that have a positive effect on the body and can be eaten in volume, foods that should be eaten only in moderation and those that should be avoided and act like 'poison' in the body. We’ve put together some examples of what Peter J. D’Adamo recommends to his clients based on their blood type.

Blood Type O

Type of diet to follow High protein/Meat
Foods that are ‘allowed’ Lean meat, fish, fruit & vegetables
Foods that should be eaten in moderation Grains, beans & legumes
Foods that should be avoided Wheat, corn, kidney beans, cabbage, cauliflower

Blood Type A

Type of diet to follow Pesco-vegetarian
Foods that are ‘allowed’ Seafood, vegetables, fruit, grains & beans
Foods that should be eaten in moderation None
Foods that should be avoided Meat, dairy & wheat

Blood Type B

Type of diet to follow Balanced omnivore
Foods that are ‘allowed’ Meat (no chicken), seafood, dairy, legumes, beans, fruit & vegetables
Foods that should be eaten in moderation None
Foods that should be avoided Peanuts, corn, lentils, seeds & wheat

Blood Type AB

Type of diet to follow Mixed diet all in moderation
Foods that are ‘allowed’ Meat, seafood, dairy, tofu, legumes, beans, grains, fruit & vegetables
Foods that should be eaten in moderation None
Foods that should be avoided Red meat, kidney beans, lima beans, corn & seeds

Evidence based conclusion to The Blood Type Diet

Although there is lots of evidence to show that certain blood groups have a higher/lower risk of certain diseases like heart disease, there is no evidence to show that this is strictly diet related. Research into The Blood Type Diet concluded that there was no evidence to show there were positive health benefits from following this diet.