"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." A study links graying hair to stem cells getting stuck, unable to color new hair growth. Stem cells ...

The answer: yes...and no.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." If only our pesky stem cells didn’t get stuck in place after a while, maybe we wouldn’t have gray hair.

Stress can cause hair to turn gray, or to turn gray earlier than it otherwise would have. This is because of the effect that stress has on melanocytes. Melanocytes are cells that produce melanin, a ...

Add Yahoo as a preferred source to see more of our stories on Google. Gray hair happens. Those of us who are lucky enough to rack up birthdays and lead colorful lives will notice that our hair has ...