The medical term for hair graying is canities. Hair turns gray (or white) when your hair follicles stop creating melanin. Melanin is the substance that gives your skin and hair color.
The study suggests that premature gray hair, or the graying of hair by age 20, is linked with higher levels of oxidative stress, which may increase with more of your everyday psychological ...
The idea that a stressful season of life is "giving you gray hair?" It's not a euphemism. "Research has linked stress with premature graying, as seen in studies on mice placed in stressful ...
including hair pigmentation. Three key mechanisms link stress to premature graying: Oxidative stress increases the production of free radicals, unstable molecules that damage melanocytes ...