The Blood Type Diet

The Blood Type Diet became famous after Dr. Peter J. Adamo wrote "Eat Right for Your Type".

Dr. Adamo states we should look at our blood type to determine which foods we should be eating. He says when we eat foods that "agree" with our blood type, we reduce the risk of serious diseases such as cancer, heart disease, diabetes, infections, and liver disease.

He works on the premise that type A people had ancestors that were farmers, therefore they should be vegetarian and avoid meat and dairy products. Type B's ancestors were nomads, and therefore type B should eat red meat and fish. Type O had ancestors that were hunters and gatherers, therefore type O should eat plenty of animal protein and few carbohydrates.

Type AB, had mixed ancestry, therefore should eat a combination of Type A and B foods.

As a "type A" I should eat a vegetarian diet as my ancestors were apparently farmers

You don't need to follow the blood type diet 100% of the time for it to work. Dr. D'Adamo suggests 75%-80% should be sufficient for the diet to work for most people. So you can have disallowed foods now and then.

There is no portion control on the blood type diet. You may eat as you wish, and snack beween meals.

Instructions for The Eat Right For Your Blood Type Diet

Blood Type : O

The Hunter - strong, self reliant, leader



Hardy digestive tract

Strong immune system

Natural defenses against infections

System designed for efficient metabolism and preservation of nutrients

Intolerant to new dietary, environment conditions

Immune system can be overactive and attack itself

  High protein : meat eaters meat, fish, vegetables, fruit


Avoid : wheat, corn, navy beans, kidney beans,  lentils, cabbage, brussel sprouts, cauliflower, mustard greens

Opt for: kelp,  seafood, salt, liver, red meat, spinach, kale, broccoli

Blood Type : A
The Cultivator - Settled, co-operative, orderly


Adapts well to dietary and environmental changes

Immune system preserves and metabolizes nutrients more easily

Sensitive digestive tract

Vulnerable immune system, open to microbial invasion


Vegetables, tofu, seafood, grains, beans, legumes, fruit

Avoid : meat, dairy, kidney beans, lima beans, wheat

Opt for : vegetable oil, soy foods, vegetables, pineapple

Blood Type : B
The Nomad : balanced, flexible, creative


Strong immune system

Versatile adaptation to dietary and environmental changes

Balanced nervous system

No natural weaknesses, but imbalance causes tendency toward autoimmune breakdowns and rare viruses



  Balanced omnivore : meat (no chicken) dairy, grains, beans, legumes, vegetables, fruit Avoid : corn, lentils, peanuts, sesame seeds, buckwheat

Opt for : greens, eggs, venison, liver, licorice, tea

Blood Type : AB
The Enigma : rare, charismatic, mysterious


Designed for modern conditions

Highly tolerant immune system

Combines benefits of Type A and Type B

Sensitive digestive tract

Tendency for over-tolerant immune system, allowing microbial invasion

Reacts negatively to A-like and B-like conditions

  Mixed diet in moderation : Meat, seafood, dairy, tofu, beans, legumes, grains, vegetables, fruit Avoid : red meat, kidney beans, lima beans, seeds, corn, buckwheat

Opt for: tofu, seafood, dairy, greens, kelp, pineapple


The information given here on the Blood Type Diet is obviously limited, in his book Eat Right for Your Type Peter D'Adamo gives a full list of foods you are advised to eat, recommended supplements for each blood group,the exercise regime each group should follow, and the medical problems most likely to face each group.

If you are interested in The Blood Type Diet I recommend you read the book before starting.

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