Do you ever wonder why you haven’t lost a single pound with just tuna and cereal over the past weeks? You’ve been sacrificing your midnight snacks and working your butt off the stairs instead of the elevator, yet nothing has changed – physically and mentally. Well, you might want to consider a not-so-usual method of staying fit and healthy – the blood type diet.


The blood type diet, founded by Dr. Peter DÁdamo, suggests that blood type greatly affects the body’s physiology. It is based on the concept that blood types represent specific personalities and needs, and these needs are only met when we eat the appropriate groups of food that are required to fuel each blood type. These food groups may be beneficial to a certain blood type but act as a poison to another. So what should you eat? Here’s a list of foods that are allowed and not allowed for each blood type.

Comparison of Blood Types


The blood type O has a unique characteristic of being able to digest both protein and fat. Persons with this blood type secrete a higher volume of intestinal alkaline phosphatase and ApoB48, enhancing their ability to break down cholesterol from animals. Type Os rely on meat, poultry, and fish to thrive successfully. On the contrary, they find it difficult to digest wheat, dairy, eggs, and beans and therefore should be avoided. Physical activity such as running, weight training and swimming benefit persons with blood type O.

The diet profile of type A is vegetarian. Tofu is their staple food and they also benefit most by eating nuts, grains, and beans. They should also fill their plates with fruits such as berries, plums, and prunes. It is imperative that type As follow their recommended diet because they are most prone to cancer, diabetes, and heart disease. They are also more predisposed to stress so relaxation activities like yoga and meditation are highly recommended.

Type B individuals have a unique profile in that unlike the opposite characteristics of the Os and As, they are strong and flexible. They are the most resistant to high-risk diseases like cancer, diabetes and heart disease, although they are prone to immune system diseases such as lupus and chronic fatigue syndrome. When it comes to food, type Bs can enjoy all kinds of dairy products because of their ability to efficiently digest and metabolize sugars. However, chicken and shellfish are a no-no. As for physical exercise, type Bs benefit best from activities that challenge both the mind and the body. These include hiking, tennis and martial arts.

The blood type AB is the newest and rarest blood type, which comprises only 5% of the population. Individuals with this profile possess type A’s low levels of stomach acid and type B’s capacity to consume meats. Thus, it is recommended that they eat meat cautiously and are encouraged to include vegetables, seafood and lean meat such as turkey. Type AB persons also thrive with a combination of physical and calming activities like yoga, running and biking.



Before deciding to start on the blood type diet, it is important to consider that like any diet, it takes a lot of work and commitment. You should also consult your doctor regarding allergies and other limiting factors that you should be aware of before you begin with the diet.  

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