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Relax. And Wear A Hat
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We all knew that stress will turn your hair grey, but did we KNOW that? I mean, was it proven? Now, the answer is yes, apparently, as scientists at Harvard have been able to show how stress speeds up the greying process. Nerves involved in the fight-or-flight response generate hormones that kills off the stem cells that color your hair. Good to know. (The Guardian)
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