Blood type matters – even affects coronary risk

The majority know that not everyone has the same blood, but not everyone knows their blood type. In general, there is no need for this, says the doctor of the Blood Service Johanna Castrén.

– The blood type is determined, for example, in connection with blood donation or surgery. In addition, for example, pregnant women have a blood type test performed at a clinic. The blood type of those going on crisis management tasks is determined before the service begins.

Thus, a blood type is remembered if it is of special importance.

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Castrén is not aware of any disease that would cause a person to check their own blood type.

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Group A members have weaker virus protection?

A Chinese study published last year found that people in blood group A had a significantly higher risk of Covid-19 infection compared with other blood groups.

The lowest risk was observed in the O-blood group, which includes 34 percent of the Finnish population.

Professor of Anatomy, University of Tampere Seppo Parkkila considers the study to be fairly reliable, but it still requires a formal peer review.

According to Parkkila, similar statistical associations with blood groups have been found for many diseases and viruses, such as hepatitis B, West Nile virus, and the familiar vomiting disease norovirus.

Noroinfection is usually obtained orally in the intestine. Antigens found in blood cells are also present on the surface of intestinal cells, and norovirus requires a specific H1 antigen to attach.

About one-fifth of the European population does not have this antigen and is resistant to many norovirus species.

Similarly, blood group B is resistant to norovirus.

Whose stomach is in danger?

Several studies have shown that people with blood type A have a higher risk of stomach cancer. 41% of Finns belong to blood group A.

According to Parkkila, however, it cannot yet be concluded that Finns are more likely to develop stomach cancer than other nations.

People in the O-blood group are more likely to develop a stomach ulcer.

Both of these diseases have been linked to Helicobacter pylori. Indeed, the researchers believe the findings are related to the different susceptibility of blood groups to bacterial infections.

Blood type O, in turn, has been found to drop the risk of pancreatic cancer.

Whatever your blood type, the most important thing is to avoid the three biggest risk factors for stomach cancer, which are smoking, heavy drinking, and being overweight.

According to cancer organizations, eating spoiled food as well as salted and smoked foods and vitamin B12 deficiency

O-blood lower risk of plugs?

The most common vascular diseases in the world are venous thrombosis and pulmonary embolism.

A study published last year found that groups A and B were 51 percent more likely to develop venous thrombosis in the leg and 47 percent more likely to develop pulmonary embolism than group O.

Studies show that people in groups A, B and AB are also at higher risk of heart attack, stroke and coronary heart disease than blood type O.

Groups A, B, and AB combine with higher levels of inflammation, which may explain the higher morbidity.

However, research findings on the association between blood groups and heart disease are partly contradictory. According to Parkkila, more detailed research results would be needed.

Blood type is just a partial explanation

Although studies have linked the risk of many diseases to blood types, experts say they should not be stared at with one eye.

Many other factors, such as lifestyle and body mass index, can reverse the risk weighting completely opposite between blood groups.

For example, the risk and prognosis of heart disease are much more affected by high blood pressure, high cholesterol, and the therapeutic balance of diabetes than by the group of blood circulating in the veins.

Experts: Johanna Castrén, Physician in charge of Blood Donation Medical Services, Blood Service. Seppo Parkkila, Professor of Anatomy, University of Tampere.

This article has appeared in Good Health magazine. As a subscriber, you can read all numbers free of charge from the service

Source: Hyvä Terveys by

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