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Scientists have discovered that stress is one
in turning our hair grey, white or
- at
, in mice. Stem cell biologists from Harvard University in the USA conducted a
of tests on mice to ascertain the
of stress on the
. The scientists injected the mice with an
found in chili peppers that gives them their heat. The compound made the mice stressed. This caused a hair-colouring pigment in the mice to go into overdrive as a
to the stress and deplete colour-regenerating stem cells. This caused the mice's hair to
turn white. Lead researcher, Professor Ya-Chieh Hsu, said: "The
impact of stress that we discovered was beyond what I imagined."
