Blood type refers to classification of blood, based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells. There are 4 main blood groups – A, B, AB and O. Your blood group is determined by the genes you inherit from your parents.
According to research by Harvard School of Public Health, your heart disease risk may be linked to your blood type. In the study, senior author, and assistant professor, Lu Qi – and his colleagues revealed the blood types which are “most dangerous”. According to the study, people with blood types A, B, or AB have a higher risk of heart disease in comparison with those with blood type O. Researchers found that having the blood group AB tends to be most risky.