Scientists think they have found the reason some people are left-handed — and it has nothing to do with the brain
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- Monday, August 13 is International Lefthanders Day.
- About 10% of the population is left-handed.
- There have been several theories over the years about why some people favor their left hand.
- A study published last year found that right- or left-handedness may have nothing to do with the brain — instead, it could be determined by gene activity in the spinal cord while you are in the womb.
Left-handed people haven't always been treated well throughout history. They've been persecuted for their disposition, being been labeled as evil — or even as witches — despite making up about 10% of the population. In fact, the word "sinister" comes from "left" or "left hand."
There have been a few theories over the decades about why some people are left-handed, including an outdated idea that it has something to do with mothers who are stressed while pregnant.See the rest of the story at Business Insider
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