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The wise, and the range of extra stress
Human turmoil may be gray. Additional ayadrenalina hormone responsible for the body.
Renal being ayadrenalina granthi
One such hormone secreted. Usually when people are afraid or angry people calm hormone ayadrenalina
And helps to normal.
However, excessive stress or
At the time of unrest due to hormonal changes the hair color. Ie, the hair goes gray.