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

Knowing your blood type is crucial medical information, but unless you've given blood before you might not be sure what yours is. I realized this when I was asked for mine while filling out paperwork ...

Have you ever wondered if your blood type could influence the foods you should eat? That’s the idea behind the blood type diet, a nutrition theory that claims your ABO blood type (A, B, AB, or O) ...