Scientists think they have found the reason some people are left-handed

Scientists think they have found the reason some people are left-handed. There have been a few theories over the decades about why some people are left-handed, including an outdated idea that it has something to do with mothers who are stressed while pregnant.

Scientists think they have found the reason some people are left-handed — and it has nothing to do with the brain

Iryna Inshyna / Shutterstock 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 determin...
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