Medically reviewed by Amelia MacIntyre, DO There are different blood types: A, B, AB, and O, with each also being Rh-positive or Rh-negative.Knowing your blood type is important for safe blood ...

Red blood cells are complex — there's much more to blood types than A, B and O. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Many people know ...

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 ...

That seemingly arbitrary letter you rarely think about could be silently influencing your health in surprising ways. Your blood type, determined before birth and unchanged throughout life, extends far ...