Both left-handedness and breast cancer are affected by sex hormones, and some studies suggested a link. Others, however, did ...

Being left- or right-handed – and the paw, eye, fin and wing equivalents – is a product of genes, development and the environment.

I’m left-handed, which means I’ve spent my entire life fumbling with scissors, wiping ink smudges from my pinky finger, and thumbing through magazines backwards. I’ve always accepted that being ...

Left-handers are more competitive than right-handers, according to a new study published in the journal Scientific Reports. The findings may help explain why left-handedness has persisted throughout ...

(CN) — A vast majority of humanity uses their right hand to write and for other skills, but a good 10% of us are left hand dominant. But why do some people use one hand and not the other? According to ...

NEW YORK (Reuters Health) - Children who don't show a hand preference are more likely than their righty or lefty peers to perform poorly in school, a new study in the journal Pediatrics shows. And ...

(CNN) -- For the first time, scientists have identified the genetic differences associated with left-handedness, a trait found in 10% of the human population. What's more, those genetic variants ...

There is no single gene for handedness Since the mid-1980s more than 100 journal articles have explored the idea that a single gene might influence handedness. These theories suggested one variant of ...

Dominant hand preference in humans is a trait that scientists are still trying to understand, but new evidence may show that whatever its purpose, the existence of dominant hands might stretch back ...

If you're fed up with scissors designed for right-handed people, spare a thought for the long-suffering lefties who, in the not-so-distant past, were forced to learn to write with their non-dominant ...