Blood types

Blood Types blood type Takeaway The ABO system is the best known way of classifying blood types In this system, there are eight main types O positive is the most common, and AB blood link But your blood type can actually put you at a higher risk for conditions such as heart attack and heart disease This is because of a gene

blood group Often abbreviated ABO, blood types are inherited and fall into four groups or types: O, A, B, AB Each blood type also is identified as either Rh positive or