Blood Type Diet – The Facts And The Myths!

Marie France Bodyline
Blood Type, Blood Group

You may have heard of a diet call the Blood Type Diet, amongst many different type of diet regimes out there. What you may not have heard, is that, this diet regime is only over 20 years old.

The Blood Type Diet was created by a naturopathic physician, Dr. Peter D’Adamo in 1996. According to him, the foods we eat react chemically with our blood types, O, A, B or AB. This essentially means that our blood type determines the right foods for our health. By eating the specific foods recommended for the different blood groups, our body will digest food more efficiently to lose weight, have more energy and help to prevent diseases.

Blood Type Diet

Over the years, many further studies and counter studies have come up from different angles attempting to affirm or disapprove this diet plan. Many of them, however, do seem to agree that this diet seems to benefit diet-goers in general regardless of blood types or other factors taken into account.

So what’s the story behind this diet plan then?


The Facts

Emphasizes Some Plant-Based Eating Plans

The blood type diet encourages people who have type-A blood to follow a primarily plant-based diet. A study published in 2012 in the "Archives of Internal Medicine" reported that people who obtain more of their protein from plant foods than animal foods are less likely to die from cancer or heart disease.

Lectins Limitation

Blood Type Diet is to limit lectins, protein that bind to sugar molecules, based on your blood type because they can negatively impact some blood types more than others. However, research indicates that lectins have similar interactions with all blood types, both negative and positive. They do not impact one blood type over another.

Lack of Scientific Evidence

In 2013, a review article in the "American Journal of Clinical Nutrition" concluded that scientific studies do not support the blood type diet. In a study University of Toronto researchers published in 2014, data collected from more than 1,400 subjects did not support the blood type diet’s premise that people who have a specific blood type will be healthier if they follow the plan’s rules.


The Myths

Blood O

Type O (Hunter)

People with this blood type have better overall health when eating a lean protein diet (meat, fish, poultry, certain fruits and vegetables) with less dairy, legumes and grains. Gluten is a leading cause for weight gain in this blood type.

Blood A

Type A (Agrarian or Cultivator)

People with blood type A have more sensitive immune system and has an increased risk of developing heart disease, cancer and diabetes. These people should consume a fresh and organic vegetarian diet.

Blood B

Type B (Nomad)

People with this blood group tend to have a strong immunity with tolerant digestive system to consume both plants and meats (except chicken and pork) also some dairy. However, they should avoid wheat, corn, lentils, tomatoes and a few other foods.

Blood AB

Type AB (Enigma)

This is the newest blood type in terms of evolution and very complex. Recommended foods are seafood, tofu, dairy, beans and grains. They should avoid corn, beef, chicken and kidney beans.

If you observe the above recommendations closely, the Blood Type Diet appears to propose different types of foods based on the possible health conditions or problems found in people with different blood groups, such as weaker immune systems and digestion efficacy levels. Nevertheless, since none of the groups have been asked to consume anything that could possibly pose danger to their other counterparts, the regime could very well work for everyone seeking a diet plan. So it’s not an absolute no-go after all.

Scientific studies into this topic have also not shown favourable inclination towards this diet plan. On this token, it is still uncertain to-date if this diet plan really works, given the dynamics of our body cells and its daily needs. Perhaps more studies in the near future could answer our questions and clear our doubts?

Regardless, this diet plan appears to be generally advisable for anyone going on a carb-free and fat-free diet plan, as it seeks to protect the heart and others precious organs from being fat-infested. It also encourages stronger immune system amongst most blood groups, and hence, it does not seem too bad after all to consume foodstuffs under the Blood Type Diet plan that could boost your immunity against common sicknesses such as viral and bacterial infections we get at school or work.

*As causes for being overweight vary from person to person, weight loss results will also vary from person to person, dependant on various genetic or environmental factors such as food intake, individual rate of metabolism, level of exercise, etc. No individual result should be seen as typical.