For decades, most of us thought blood types were simple: A, B, AB, or O—each with a positive or negative Rh factor. But that’s just the surface. Scientists now recognize 48 distinct blood type groups, ...

Knowing your blood type is critical during emergency health situations. Knowing your blood type is crucial medical information, but unless you've given blood before you might not be sure what yours is ...

O- blood is the universal donor type because it can be used for anyone. AB+ blood can receive any type of blood, making it the universal recipient. Blood types need to match, or the immune system will ...

Scientists have found a link between blood type A and a higher risk of stomach cancer. This connection appears over time.

The short answer: No, there is no “best” blood type. But each of the four main categories — A, B, AB and O — have their own advantages and disadvantages. It can also make you less attractive to ...

Blood – everyone's got it. In fact, an adult who weighs between 150 and 180 pounds has around 1.2 to 1.5 gallons of blood in their body. This makes up approximately 10% of an adult’s weight. Blood ...