Hello Doctor,I am male 25 yrs - my hair on the head and the beard are already 30% grey most of it was in last 6 months.... i am stressed a lot...and recently even my chest hair and pubic hair started getting grey,,,,,is there any solution to get rid of this and to control or rectify it... please suggest .... is it a sign of any disease ... does masturbation is any kind of reason for this greying hair.....