Trichologist Dr Sonal Shah, points out how, of late, women as young as 25 are worrying about greying early. "It's the same case for men," she says. She pegs it down to two major causes, "First is a faulty diet and second, mental worries. Lack of some B Vitamins, iron, copper and iodine in the daily diet are said to be contributory factors. Mental stress also produces extraordinary tension in the skin of the scalp, which interferes with the supply of nutrition necessary for good hair health. Apart from these, Premature greying is caused due to stress, anemia, poor scalp conditioning, abuse of hair as well as genetic conditioning."