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January 22, 2020 - Bioengineer.org

Solving a biological puzzle: How stress causes gray hair

Solving a biological puzzle: How stress causes gray hair
Coulple with grey hairFile Photo / © Photabulous!

When Marie Antoinette was captured during the French Revolution, her hair reportedly turned white overnight. In more recent history, John McCain experienced severe injuries as a prisoner of war during the Vietnam War — and lost color in his hair.

For a long time, anecdotes have connected stressful experiences with the phenomenon of hair graying. Now, for the first time, Harvard University scientists have discovered exactly how the process plays out:

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