Thanks Mack Weldon for sponsoring this video. To get 20% off your first order, visit and enter promo code: brainfood20 In the video today, we're looking at why different blood types in some cases can't be mixed. To begin with, there are several different types of blood. Contained within them are different types of cells and countless molecules that give our bodies the needed nutrients to work effectively. The two main types of cells within the blood are red and white blood cells. Red blood cells make up nearly 45% of your blood volume. White blood cells make up less than 1%. What is left over is known as blood plasma, which makes up approximately 55% of your blood volume.
As to blood types, what type you are will usually depend on the types of blood your parents have, though there can be exceptions like if you receive a bone marrow transplant from someone with a different blood type, your blood type will eventually change, among some caveats like that. As to why there are different blood types...
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