7 important facts you need to know about your blood type that everyone should know but nobody does

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Jan , 28. 12. 2025

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Not all people realize the importance of blood type and its influence on our life. Today we will therefore reveal seven important facts about it.

They will help you learn more about the blood that runs through your veins and also how to properly use this knowledge in health care.

1. Knowing your blood type can save your life

We begin with the most basic fact, which many of you probably already know, but it is good to be reminded.

In the event of an injury or a car accident, doctors will need to act very quickly. If you do not have any information about your blood type with you, they can determine it with a test on the spot, but they may lose precious minutes while doing so.

If you were given a blood transfusion of the wrong blood type, it could have adverse consequences for your health and even your life.

Therefore it is appropriate to know your blood type and to carry that information, for example, in your wallet or on your documents.

2. Different nutritional needs

Peter D’Adamo, an experienced practitioner of natural medicine, says that nutritional requirements vary for people with different blood types.

That means, for example, that people with blood type O (zero) should consume proteins, lean meat, poultry, fish, vegetables and healthy fats, because they tend to have digestive issues.

On the other hand, people with blood type A have a sensitive immune system and therefore should eat lots of citrus fruits, broccoli, garlic and spinach. It is necessary to avoid trans fats and limit meat intake.

People with blood type AB lack sufficient stomach acid, which means they should stimulate its production. Alcohol and caffeine do not agree with them. On the other hand, seafood is recommended.

People with blood type B should avoid foods high in carbohydrates such as corn, wheat, buckwheat, rye, lentils and peanuts. They should also not eat pork and chicken. However, they tolerate dairy products well.

You can read more about the diets for the individual groups in this article .

3. Check your blood type if you are constantly stressed and nervous

People with blood type O are more prone to nervous outbursts.

The same is true for people with blood type A, whose bodies produce more of the stress hormone cortisol, so they tend to be more nervous.

If you belong to these two blood groups, that may also be a reason for the higher level of stress in your life.

4. Blood types and cancer

It is true that some people are more prone to cancer than others. But how is that possible when we are supposedly all the same? Researchers believe that one of the causes is our blood type. Specifically, that some blood types have a stronger association with cancer than others.

After many experiments, they concluded that people with blood type O have up to a 20% higher risk of developing stomach cancer.

Another similar study showed that blood type O also has a higher risk of stomach ulcers.

In contrast, people with blood type A have more problems with bad LDL cholesterol.

5. Blood type affects belly fat

If you are a carrier of blood type A, your body reacts poorly to certain foods, such as shellfish, milk or meat.

Those foods cause you bloating, acid reflux (heartburn) and an increased risk of diabetes.

People with blood type A also have great difficulty losing stubborn fat, especially around the belly and waist.

6. Blood type influences your character

This fact has been known in Asian medicine for a very long time.

Blood type also influences a person’s character traits, so people with the same blood type tend to have similar personality traits.

People with blood type O often worry, but they are practical and organized.

People with type AB are strong, rational and have almost no worries.

Those with blood type B are extroverted, emotional, flexible and friendly.

Recommended: Natural treatment of high cholesterol and clogged arteries

And finally, people with blood type A think a lot about others because they are very compassionate.

7. The Rh factor affects the fetus in the womb

Besides classifying blood into the four groups A, B, AB and O, we also know the so‑called Rh factor, either positive or negative.

Approximately 85% of all people have a positive Rh factor. When both parents have the same Rh factor, no complications are expected for the fetus.

However, if the father is Rh positive and the mother is negative, this means a potential risk for the developing fetus in the womb. In rare cases it can even be fatal for the child.

Therefore, if you are an Rh-negative woman and have an Rh-positive partner, do not forget to inform your gynecologist in case of pregnancy, who will then monitor it more closely.