Your blood type boils down to sugar
Have you ever wondered what makes your blood type A, B, AB, or O? Turns out, it’s all about the sugar.
The blood types are named after antigens that are found on the surface of your red blood cells. These antigens are simple chains of sugars, according to Stanford School of Medicine. “The A flavor makes the A sugar, and the B one makes the B sugar. It turns out that the O flavor doesn’t make any sugar,” according to Stanford. “Someone that’s ‘AO’ will be type A, because the O flavor of the gene makes no sugar. This person only has the A sugar.”
But what about the positive or negative element? Well, that’s all about the Rhesus factor (or Rh factor). If you don’t have the Rh factor, your blood is negative. If you do have it, your blood is positive.