What diseases are at risk by blood group?

Is it true that you can determine a disease by blood type? Depending on the features of the composition in the AB0 system, 4 blood groups are distinguished. And it has long been possible to find out that precisely these differences can affect susceptibility to certain diseases.

Thrombosis

Researchers from Denmark studied how blood type interacts with genetic susceptibility to deep vein thrombosis (DVT), or the appearance of blood clots in the lower extremities. As part of the study, the results of more than 30 years of monitoring the health of 66,000 people were analyzed. As a result, it was found that people with blood types II, III and IV have a 40% higher risk of developing DVT than with the most common type I. Moreover, an additional study that examined the effect of various factors on the risk of developing the disease showed : IV blood type increases the risk by 20%, and being overweight and smoking by 16% and 6%, respectively.

Heart disease

Harvard scientists studied the influence of blood group on the risk of developing heart disease. As part of the study, they analyzed data on the health of 77,000 patients and found that those with IV blood group have the highest risk of developing heart disease — 23%. However, researchers remind that factors such as weight, smoking and type of diet have a much greater influence.

Stomach cancer

Researchers from the Karolinska Institute (Sweden) found that blood group II increases the risk of developing stomach cancer by 20%. At the same time, patients with blood group I showed a lower resistance to Helicobacter pylori bacteria, which cause gastritis and stomach ulcers.

Dementia and memory loss

< p>People with IV blood group have the highest risk of developing age-related cognitive impairment: as the results of one study showed, the presence of blood of this group increases the risk by 82%. Scientists attribute this to the fact that people with the fourth blood type tend to have higher levels of a special type of protein that affects clotting – and plays an important role in the development of age-related dementia. But it is important to remember that factors such as high blood pressure, diabetes, and smoking have a much stronger effect on the risk of developing the disease.

Stroke

< p>The researchers call the owners of the I blood group the most protected from the development of a stroke: their risk is only 9%. Experts are not yet ready to answer what exactly is responsible for this pattern, but they remind that after the age of 40 it is important to control your blood pressure and, if possible, to give up smoking and excessive alcohol consumption.