Things Your Blood Type Says About Your Health

Type O: Has no A or B antigens, but both anti-A and anti-B antibodies — the “universal donor.”

These antigens are not only important for transfusions but also play a role in how your immune system identifies and reacts to foreign substances.

How Blood Type Affects Disease Risk

1. Heart Disease

Studies have shown that non-O blood types (A, B, and AB) may have a slightly higher risk of heart disease. This is likely due to higher levels of a blood-clotting protein called von Willebrand factor (vWF) and Factor VIII, which can increase the risk of thrombosis.

2. Cancer Risk

Research indicates that people with blood type A may be more prone to certain cancers, such as stomach and pancreatic cancer, possibly due to differences in immune response and how Helicobacter pylori bacteria attach to stomach lining cells.

3. Infection Susceptibility

People with type O blood may have some resistance to severe forms of malaria, while type A individuals could be more susceptible to certain viral infections like smallpox or norovirus, based on how pathogens interact with blood group antigens.