The blood group determines how the human body deals with different nutrients

Dr Peter D’Adamo, naturopath and creator of the Blood Type Diet, believes that the blood group determines how the human body deals with different nutrients. In his opinion, each blood group has its own unique antigen and this marker reacts badly with certain foods, leading to all sorts of potential health problems. If people eat according to their blood type they may be healthier.blood group

Dr. Adamo put the basis of a blood type evolution theory which claims that blood types evolved at different times throughout history, so people should eat what the ancestors ate. Evolution chain begins with blood type O, followed by type A, B and AB.

Blood Group O is considered to be the first blood type. It belonged to our hunter-gatherer ancestors who lived around in 50,000 B.C. Since our type O ancestors survived and thrived on a high-protein, meat-based diet, people who have this blood type today should have a similar diet. Foods that can be included in the daily meal plan of the people with O blood type are: meat, fish and olive oil (they can be eaten in larger quantities); eggs, nuts, seeds, certain vegetables and fruits (in smaller quantities). Foods like dairy products, beans, cereals, bread, pasta and rice have to be avoided. Running is the best option of aerobic exercises recommended for this blood type.

In the evolution chain, the next blood group in Dr. Adamo’s opinion is type A which showed up sometime around around 15,000 B.C, when our ancestors became farmers. They ate mostly fruits and vegetables, so this is what any blood type A possessor should eat. To be more specific, nuts, seeds, beans, cereals, pasta, rice, fruit and vegetables are all on the ‘to eat’ list. The recommended physical exercises are those of low intensity, such as stretching, yoga, golf etc.

Around 10000BC, blood group B evolved due to the nomadic habits of our ancestors. Their diet was a mixed one and consisted of meat, dairy, grains and vegetables.  To eat accordingly to the blood group B, people should eat today a large variety of foods, both vegetarian and non-vegetarian. The only foods that have to be avoided are processed foods. Nuts and seeds and the carb rich foods should be eaten in small amounts.  The recommended exercises are tennis, swimming, running etc.

The newest blood type is AB, which evolved just 1,000 years ago. Dr D’Adamo thinks this blood type helped our ancestors make the transition to modern times. People with AB blood group can eat a mixture of the foods suitable for both blood group A and blood group B. Abs persons follow a veggie diet most of the time with some meat, fish and dairy products occasionally. The physical activity should combine calming exercises with moderately intense activities.

Positive aspects of the Blood Type Diet:

  1. It is easy to follow once you have the list of foods you can and can’t.
  2. It encourages people to eat unprocessed foods, and have more fruits and vegetables.
  3. Each Blood Type has to do physical exercises.

Arguments against the Blood Type Diet

  1. Most of the qualified nutritionists or dietitians do not recommend this diet, because they think there is no link between our blood group and the diet we eat.
  2. The diet plans for groups O and A are considerably limited, leaving aside major groups of foods. In the long term, this can means a poor intake of nutrients needed for good health.
  3. The diet does not specifically indicate how much of the body weight can be lost. Dr. Adamo says it depends on how strictly the food plan follows the recommended blood type diet.



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