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A comment on How to Become a ‘Superager’. Parent comment

Re:How to Become a ‘Superager’ by EGreg on Sunday January 01, 2017 @10:27AM (#13296025)
There is some evidence for chronic stress causing premature achromotrichia,[24] but no definite link has been established. It is known that the stress hormone cortisol accumulates in human hair over time, but whether this has any effect on hair color has not yet been resolved.

(Wikipedia)

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