Normally when the head of graying hair, the eyebrow hair will also experience discoloration. But when the head of hair already graying eyebrows remain, while black or dark, then you should immediately check blood sugar levels.
A German study showed that high blood sugar levels can prevent eyebrow hair in men became gray, so many men with diabetes who eyebrow hair remains black even though his head had turned white.
Poor metabolism in patients with diabetes may slow the growth of gray in his eyebrows.
In research involving 100 men between the ages of 50 to 70 years, found that men with gray hair, but eyebrows remain dark, 76 percent more likely to suffer from diabetes. While only 18 percent of men with gray hair and gray eyebrows who suffer from diabetes.
Basically the cause of gray in his eyebrows almost tantamount to gray in the hair of the head, among others, due to heredity, unhealthy diet, smoking, lack of drinking water, stress and anxiety.
The root of every strand of hair is surrounded by a tube of tissue under the skin called a follicle (follicle). Each follicle contains a few pigment cells.
These pigment cells continuously produce a chemical called melanin, which gives the growth of the hair shaft brown, black, blonde, red and others. Pigment eumelanin (for black hair and dark brown) and pheomelanin (yellow and red for the hair).
Melanin is also a substance that gives color to the skin. This helps determine whether or not a person exposed to sunburn. Whether or not the dark color of someone's hair depends on the melanin content of each person.
The more people become older, the pigment cells in hair follicles will gradually die. When the bit content of the pigment cells in hair follicles, then every strand of hair is no longer contain much melanin and will change your hair color to gray or white during its growth.
The longer the fewer pigment cells, which eventually will be fully colored hair gray or white.
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