1.Which vitamins deficiency causes hairloss? 2.Which vitamin deficiency causes grey hair? 3.I lose my hair on sides due to dandruff is hair is regrowth in sides of lose area ?Is it possible?

Dr. Sajeev KumarGeneral Physician33yrs exp

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1.)Vitamin D stimulates hair follicles, so a deficiency may lead to hair loss. There is some evidence that having a vitamin D deficiency does cause hair loss and other hair problems. ... A vitamin D deficiency may also be linked to alopecia areata, an autoimmune condition that causes patchy hair loss. 2.) White and gray hairs may start to grow at any age, and may be caused by a range of different factors. Any deficiencies of vitamin B-6, B-12, biotin, vitamin D, or vitamin E can contribute to premature graying. 3.) you have alopecia on your sides and hair can re grow there as part of total hair growth if you take vitamins Normally, when hair falls out, new hairs start forming in the same place as the old ones. But when someone has hair loss, the hairs may not grow back. Or they do grow, but there aren't enough of them to take the place of what's already fallen out. This often happens to men, who might start to go bald as they get older. 

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