Your blood type might seem like a minor detail in your medical history, but it carries significant implications for your health and medical care. From emergency transfusions to pregnancy planning, ...

Add Yahoo as a preferred source to see more of our stories on Google. Close-Up Of Donated Blood In Bag Your blood type affects everything, from a predisposition to certain diseases to your heart ...

It started with a routine blood test before surgery. What doctors discovered next hadn’t been seen in medical history. For decades, most of us thought blood types were simple: A, B, AB, or O—each with ...

Human blood already comes in a bewildering variety of types, but researchers have now identified a new one so rare that only three people on the planet are known to carry it. The finding exposes just ...