Yay for gray? While many people go to great lengths to prevent or mask their silver strands, a new study reveals that going gray may play an essential role in fighting off a deadly disease. Researchers claim that the dreaded, telltale sign of aging could, in fact, reflect a natural defense against cancer. The study, published in Nature Cell Biology , explores how hair follicle stem cells respond to DNA damage and found a shocking connection between gray hair and melanoma. Stress from lots of

Tag-uri: DNA