Gray or white hair results from decreased melanin production (by melanocytes at the base of the hair follicle) and from the replacement of melanin by air bubbles in the hair shaft.
It is usually the natural result of aging (all of our cells start to slow down as we age).
2006-12-04 07:20:22
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answer #1
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answered by Lexi P 3
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Gray hair is typically a result of natural aging. Pigment in the hair shaft comes from special cells at the root (base) of the hair. These cells are genetically programmed to make a certain amount of pigment (melanin) at specific ages. At some point in the aging process, these cells make less and less pigment until the hair has very little pigment. White hair has no pigment, and gray hair has some but not as much as a red, black or brown hair.
2006-12-04 07:15:46
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answer #2
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answered by uttam212002 2
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The root of every strand of hair is surrounded by a tube of tissue under the skin that is called the hair follicle (say: fah-lih-kul). Each hair follicle contains a certain number of pigment cells. These pigment cells continuously produce a chemical called melanin (say: meh-luh-nin) that gives the growing shaft of hair its color of brown, blonde, red, and anything in between.
Melanin is the same stuff that makes our skin's color fair or darker. It also helps determine whether a person will burn or tan in the sun. The dark or light color of someone's hair depends on how much melanin each hair contains.
As we get older, the pigment cells in our hair follicles gradually die. When there are fewer pigment cells in a hair follicle, that strand of hair will no longer contain as much melanin and will become a more transparent color - like gray, silver, or white - as it grows. As people continue to get older, fewer pigment cells will be around to produce melanin. Eventually, the hair will look completely gray.
People can get gray hair at any age. Some people go gray at a young age - as early as when they are in high school or college - whereas others may be in their 30s or 40s before they see that first gray hair. How early we get gray hair is determined by our genes. This means that most of us will start having gray hairs around the same age that our parents or grandparents first did.
Gray hair is more noticeable in people with darker hair because it stands out, but people with naturally lighter hair are just as likely to go gray. From the time a person notices a few gray hairs, it may take more than 10 years for all of that person's hair to turn gray.
2006-12-04 07:35:55
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answer #3
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answered by trivia buff 5
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As we get older, the pigment cells in our hair follicles gradually die. When there are fewer pigment cells in a hair follicle, that strand of hair will no longer contain as much melanin and will become a more transparent color - like gray, silver, or white - as it grows.
2006-12-04 07:13:53
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answer #4
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answered by Dancerchik88 1
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fact the more u dye the more u kill your hair and become gray quicker fact in other words dont dye
2006-12-04 07:32:26
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answer #5
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answered by TRINA R 1
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we get grey hair when we get older, mainly because of age. also stress is a main reasoning for this natural accurance! sad but true im affraid!
2006-12-04 07:18:19
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answer #6
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answered by spunker 1
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because our hair change when we get old just like a newborn baby
2006-12-04 07:13:28
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answer #7
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answered by Anonymous
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because you're hair grows old too and loses its memory and forgets what color it was suppposed to be
2006-12-04 07:13:49
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answer #8
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answered by Anonymous
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well, that's just the way life goes.... and later on, you die.... life is a deadly illness....
2006-12-04 07:13:33
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answer #9
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answered by Lux 4
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