Solving a Biological Puzzle: How Stress Causes Gray Hair

Harvard University via Science Daily – 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.

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