Psychological stress causes human hair to turn grey
the verdict
SUPPORTED
the evidence backs this
confidence 87/100
Psychological stress causes human and mammalian hair to turn grey through a mechanism where stress activates the sympathetic nervous system, releasing norepinephrine which rapidly depletes melanocyte stem cells in the hair follicles.
Evidence for · 5
Aging of the Hair Follicle Pigmentation System
2009 · cited by 89
Discusses how hair follicle melanocyte stem cells are depleted during aging and stress-related processes, linking oxidative damage to greying.
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More for · 4
The Danger of Being Too Sympathetic: Norepinephrine in Alzheimer's Disease and Graying of Hair
2020 · cited by 13
Details how stress triggers norepinephrine secretion, which causes the rapid depletion and differentiation of melanocyte stem cells, leading to premature hair greying.
Fight or flight turns hair white
2020 · cited by 9
Reports that sympathetic nervous system signaling triggered by stress depletes stem-cell populations in hair follicles, causing premature greying.
Melanocortin 1 receptor is dispensable for acute stress induced hair graying in mice
2020 · cited by 8
Confirms that acute stress leads to the loss of melanocyte stem cells and premature hair greying through sympathetic hyperactivation.
Natural product rhynchophylline prevents stress-induced hair graying by preserving melanocyte stem cells via the β2 adrenergic pathway suppression
2023 · cited by 5
Demonstrates that stress-induced norepinephrine accelerates hair greying by binding to beta-2 adrenergic receptors on melanocyte stem cells, and that blocking this pathway prevents greying.