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 There have been a few theories over the decades about why some people are left-handed, including an outdated idea that it has something to do with mothers who are stressed while pregnant.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