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Grey Hair Causes – Reasons for Gray Hair, Graying
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Grey Hair Causes – Reasons for Gray Hair, Graying
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The main question for this topic @ Billion Dollar Questions: What are the best treatments for grey hair & hair loss?
See a list of all the topics under the question here.
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Gray hair usually results from 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.
Melanin, a chemical produced by specialized cells within each hair follicle, is responsible for giving hair color. Different types of melanin are responsible for different types of hair color—eumalinin for brown or black hair and pheomelanin for yellow or red hair. The type of melanin an individual has is controlled by pigment cells that are, in turn, determined by genes. As we age, the pigment cells at the base of our hair follicles stop producing melanin; without the chemical, our hair turns white.
You can't prevent graying. Some people start graying in their 30s, and some not until their 60s. Genetics likely play a strong role in graying.
People rarely go gray overnight. If they do, it's typically due to alopecia areata. This condition causes the thicker, darker hairs to stop growing before it affects the growth of gray hairs - giving the impression of graying overnight.
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Related Topics & Questions
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Middle East - Turkey - Istanbul, Israel - Tel Aviv
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Africa - South Africa - Johannesburg, Cape Town, Durban
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