Hi, there are conditions other than age to which premature graying of the hair has been linked. These include: Certain medical conditions like multiple sclerosis and thyroid disease Graying of hair may also occur prematurely because of certain viruses Vitamin deficiencies may also be responsible for graying of the hair Mineral deficiencies were thought to be a possible concern as some studies indicated a link between premature graying Environmental toxins are also thought to be possible causes of premature graying. Kindly consult Dermatologist...