Graying Hair :
Graying hair is the complete or partial process of hair becoming white or gray. Typically graying of hair is common with increasing age, while noticing gray hair at younger age would be a worry some situation. It occurs as a result of loss of a substance called melanin which is responsible for the pigmentation of the hair and skin. The exact cause of the condition is not clear, medical experts believe it to be a Multi- factorial condition including genetic, nutrition and environmental factors such as smoking, vitamin B12 deficiency,Thyroid disorder,smoking,stress, and certain autoimmune disorders. Reversing graying hair is possible if the condition is due to a underlying medical problem, but if genetics or aging is the cause, nothing can prevent or reverse this natural process.