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 ...

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.

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.

Several genes with varying inheritance patterns are involved in determining your blood type. The most significant gene is the ABO gene which determines your ABO blood type. Like many of your physical ...