Is The Blood Type Diet Irrelevant? Here’s What Experts Say


In recent years, more and more people have been searching for more personalized approaches to eating healthy. After all, each of us has different food preferences, health conditions, and health goals, so maybe a one-size-fits-all type of diet is not the right idea.

The blood type diet has gained popularity as one potential way to tailor one’s nutrition to their specific blood type. Proponents of the diet claim that following a specific plan based on their blood type can help with weight loss, increase energy levels, and improve overall health. 

However, many experts have questioned the validity and relevance of the blood type diet.

What Are Blood Types?

Blood is classified into four main types: A, B, AB, and O. These blood types are determined by the presence or absence of certain antigens (something that induces an immune response). These antigens can be either “A” or “B”, and if both are present, the blood is classified as AB. If neither is present, the blood is classified as O.

This becomes especially important for blood transfusions. Receiving the wrong type of blood can potentially cause a fatal reaction.

The Blood Type Diet

According to the blood type diet, each blood type has specific characteristics and needs, and following a specific diet plan tailored to one’s blood type can improve health and well-being.

●     Blood Type A: This blood type is associated with a more “vegetarian” type diet, focusing on plant-based proteins, grains, and vegetables. Avoiding meats, dairy, and wheat is also recommended.

●     Blood Type B: This blood type is associated with a more diverse diet, including meats, dairy, and grains. However, it is recommended to avoid chicken, corn, wheat, and peanuts.

●     Blood Type AB: This blood type is a combination of the A and B diet plans, with a focus on seafood, tofu, dairy, and grains. It is recommended to avoid alcohol, caffeine, and smoked or cured meats.

●     Blood Type O: This blood type is associated with a high-protein diet, including meats, seafood, and vegetables. Grains, dairy, and legumes are discouraged.

What Do the Experts Say?

While the Blood Type Diet may seem appealing for its personalized approach, the scientific evidence for its effectiveness is limited. 

In fact, many experts argue that these diet plans (with the exception of Blood Type B) are actually beneficial for everyone, regardless of their blood type.

For example, a vegetarian diet high in whole grains and vegetables (as recommended for Blood Type A) is generally considered healthy and can help lower the risk of chronic diseases like heart disease and diabetes. It doesn’t seem to matter who follows the diet. It can be helpful for nearly everyone.

Similarly, a high-protein diet that includes plenty of meats and vegetables (as recommended for Blood Type O) can also be beneficial for weight loss and muscle building—even if you don’t have type O blood.

The diet prescribed for blood type B does not appear to provide clinically significant benefits for anyone. It seems to be a nearly random assortment of do’s and don’ts with no basis in nutritional science.

No matter what blood type you are, you can benefit from eating a healthier diet. While there may be some individual differences regarding what a healthy diet means for you, it is unlikely that your blood type has any relevance to the way you should eat.