When you spot a silver strand in the mirror, you normally chalk it up to getting older. But scientists at the University of Tokyo say that strand might signal something far more interesting: a ...

Sunburn and heat exhaustion aren’t the only reasons to avoid too much sunshine this summer: Going gray is another consideration. Hair strands, which grow out of glands called follicles, can't change ...

For generations, gray hair has been treated as a cosmetic problem to hide, a visible marker of age and stress. Now a wave of research is turning that assumption on its head, suggesting that the loss ...