Can blood type influence the development of diseases, scientists have found out

Researchers from Tufts University have established a link between blood type and the risk of developing a number of diseases, including heart disease, stroke, cancer, and severe forms of malaria. People with blood types A, B, and AB are at greater risk of heart attacks and blood clotting disorders, while carriers of type A are more likely to experience strokes before age 60 and stomach cancer. Type O, on the other hand, may provide protection against severe consequences of malaria and slightly reduces the risk of death from COVID-19.

Researchers from Tufts University, drawing on extensive population surveys, have found that blood type may indicate a predisposition to various diseases. According to the American Heart Association, people with blood types A, B, and AB are at greater risk of heart attacks related to coronary heart disease compared to those with type O. The greatest danger is observed in individuals with type AB. Carriers of blood type A are more likely to experience strokes before age 60. People with type A have a significantly higher risk of developing certain types of stomach cancer and are more likely to be infected with the Helicobacter pylori bacterium. An increased likelihood of developing pancreatic, cervical, colorectal, breast, and lung cancer is observed in people with types A, B, and AB. Laboratory experiments have shown that mosquitoes prefer blood type O, but this type may provide protection against severe consequences of malaria. Analysis of data from a large European study showed that people with type O have a slightly lower risk of death from COVID-19. The article is of a review nature, references specific studies, but does not contain a critical analysis of their methodology or limitations.