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.

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 ...

Do you know your blood type? Find out so you can learn more about how it affects your heart health. Jessica was a writer on the Wellness team, with a focus on health technology, eye care, nutrition ...

French scientists have discovered a new blood type in a woman from the Caribbean island of Guadeloupe, France's blood supply agency announced Friday. The woman is the only known carrier of a new blood ...