Graying of the hair is natural as you get older. What's considered premature graying is often nothing out of the ordinary, with natural graying often beginning in the early 30s, according to the National Institutes of Health. If your hair begins...
The color of skin is determined by a pigment called melanin, which protects the skin from sun damage. If you lack melanin in certain areas, you have hypopigmentation in that area. Even people who are very pale have melanin in their skin....
Despite popular belief, gray hairs are not the result of wisdom nor are they caused by stress, at least not the kind of psychological stress you'd imagine. Rather, gray hairs are a natural part of aging in which damaged melanocytes produce less...
The main cause of graying hair is old age. Melanocytes are cells in hair follicles that produce a color pigment called melanin. When you get older, melanin production declines and individual gray or white hairs begin to grow in. There hasn't been...
One of the common traits associated with growing old is gray hair. As we age, the melanocytes that contribute the pigment, melanin, to our hair stop producing, causing hair to become more transparent, or "gray." In fact, without any melanin, hair...
Gray hair isn't just a sign of old age. Although most people start to spot gray hairs in their early- to mid-30s, your hair can start to turn gray at any point that its pigment-producing cells stop functioning, causing your hair's color to fade....
Cells called melanocytes, found in hair follicles, give hair its color. Gray hairs result over time as the activity of these cells slows, according to pediatrician Dr. Alan Greene. While it's a natural part of the aging process, graying hair in...
Plenty of money is spent each year by men and women who are trying to preserve their youth by covering up those tell-tale patches and streaks of hair that are turning gray. Graying hair may be nothing more than a sign of aging, but it may also be...
Genetic hearing loss accounts for 30% to 50% of hearing disorders. Thanks to exciting advances in genetic mapping, research is now able to identify more than seventy genes that lead to deafness. The genes responsible for hearing disorders may be...
