Solving a biological puzzle: How stress causes gray hair

(Harvard University) Harvard scientists have found evidence to support long-standing anecdotes that stress causes hair graying. Researchers found that in mice, the type of nerve involved in the fight-or-flight response causes permanent damage to the pigment-regenerating stem cells in the hair follicle. The findings advance knowledge of how stress impacts the body, and are a first step toward blocking its negative effects.
Source: EurekAlert! - Social and Behavioral Science - Category: International Medicine & Public Health Source Type: news