Why Humans Have Different Blood Types (It's Not Random)

You probably know your blood type. But have you ever wondered why humans carry different blood types at all? The real answer is far stranger than random genetics. In this video, you'll discover how Karl Landsteiner's 1901 experiment revealed the ABO system, why A and B are really sugars on the surface of your cells, and why type O is essentially a broken version of the same gene. You'll learn why this variation has survived in primates for more than 20 million years, how diseases like malaria, cholera, and norovirus may have shaped who survived, and what Ludwig and Hanka Hirszfeld's World War I discovery revealed about human history. You'll also find out why your blood type has no meaningful link to your personality. Your blood type isn't just a label on a card. It's a survivor's record. If this changed how you see your own blood, like the video, tell us your blood type in the comments, and subscribe for more stories about your ancestors, your body, and your brain. #bloodtype #bloodtypes #humanevolution #evolution #anthropology #humanhistory #biology #science #scienceexplained #genetics #immunesystem #malaria #ABOBloodGroup #RhFactor #didyouknow #educational #doodleanimation #psychology #historyexplained #whyhumans