Your blood type affects everything, from a predisposition to certain diseases to your heart health. Knowing your blood type is important information that can come in handy during a medical emergency.

Blood usually falls into a few widely recognized categories or types, based on the proteins that are expressed on the surface of red blood cells. For example, A or B antigens may be present there, ...

There are rare blood types beyond the eight most common ones, and researchers have discovered one more that brings the total count to 49. Blood type A(B) is caused by a four gene mutations and was ...

OBI is urging Type O blood donors to donate as supplies of both O-positive and O-negative blood are at low levels following ...

Add Yahoo as a preferred source to see more of our stories on Google. Grail's Galleri test screens for more than 50 different types of cancer from a single blood draw. (Getty Images) (Getty Images) If ...

Knowing your blood type is important information that can come in handy during a medical emergency. It can also tell you more about which medical conditions you're more at risk for, such as heart ...