4 ms·

> "Pain in mice triggered the release of adrenaline and cortisol, making their hearts beat faster and blood pressure rise, affecting the nervous system and caus

> "Pain in mice triggered the release of adrenaline and cortisol, making their hearts beat faster and blood pressure rise, affecting the nervous system and causing acute stress. This process then sped up the depletion of stem cells that produced melanin in hair follicles."

poiuyt098 7y ago
Would caffeine lead to early graying then?
- mikelyons 7y ago
  Not sure, pain seems more stressful than caffeine, but you'd have to test.