fromHarvard Gazette
1 day agoWhy stress can make your hair fall out - Harvard Gazette
The first part, the immediate loss of hair, was simple. "Stress has an immediate impact through the activation of the sympathetic nervous system," explained Hsu, who is also a principal faculty member of the Harvard Stem Cell Institute. She said that it begins with our natural "fight or flight" response, which releases norepinephrine, a neurotransmitter that - among other effects - kills highly proliferating cells in the hair follicle when the level is too high. Hair loss in such circumstances is usually temporary.
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