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Experts close to roots of greying
The grey hairs that develop with age really are signs of stress, at least of the cellular kind, say scientists.
Genotoxic stress, namely anything that damages the genetic code of life DNA, causes a malfunction of the cells ultimately responsible for hair colour.
The stress sets off a chain of reactions involving specialised cells called melanocyte stem cells, their work on mice in Cell journal reveals.
June 12, 2009, 11:25am
