this post was submitted on 09 Dec 2025
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But blood types are real.
not the part where they define your personality and compatibility https://en.wikipedia.org/wiki/Blood_type_personality_theory
Obviously. But in Japan, people think certain blood types have specific personality traits and it gets really annoying when people believe it as if it were solid science.
Whoa, what?
...nope. Considered hormonal influence on blood cells for a moment but unlikely and even then not over statistic noise.
It's apparently because we have a pretty even split between A, B, AB, and I types unlike many other countries where the population tends to lean heavily on one type, which makes it easier to categorize people and traits.
Tbh, this "reason" is something I saw ages ago on TV, so I'm not even sure if it's true. Please take it with a gigantic grain of salt!
Some isolated island effect?