Most people don’t spare a thought for their blood type unless they’re in need of a transfusion — but could yours hold secrets to your health? There are four main blood types: A, B, AB and O.

There’s more history in your blood types than you think, and it didn’t begin with humans. Here’s what we know about them, ...

A person's blood type is determined by "the presence or absence of certain antigens – substances that can trigger an immune response if they are foreign to the body," according to American Red Cross.

Doctors stumbled upon a type rarer than “golden blood”—and suspect more patients carry the bizarre genetic anomaly.

Your blood type is important information to have in a medical emergency, but it can also tell you how at risk you are for heart disease. Jessica Rendall Former Wellness Reporter Jessica was a writer ...