Bloom - a natural process occurring sooner or later all.
However, someone starts to turn gray, barely reached adolescence, and some live to fifty years without any gray hair.
Graying is largely due to genetic causes, but there are other conditions, such as diet and stress.
For most people, the determining factorIt is genetics. The first strand of gray, you will have the same age as your parents or grandparents. However, the pace of new gray hair also depends on the way of life and habits.
What aggravates the appearance of gray hair
Smoking accelerates the emergence of a new gray hair. Anemia, poor nutrition, lack of B vitamins and thyroid problems can also contribute to premature bleaching of hair.
For hair color in humans is responsiblemelanin pigment. This is the same pigment that colors the skin a dark color when tanning. Each hair follicle contains cells called melanocytes. Those, in turn, produce colored pigments of black, brown, yellow and red colors, and the melanin is carried to the cells that produce keratin - core protein, a part of the hair.
At the beginning of the appearance of gray hair melanocytes are still present in the hair, but hair color becomes lighter. Gradually these cells die off, and nothing remains from rich hair color.
The appearance of gray hair - this is an inevitable processaging. But sometimes, premature gray hair is a result of an autoimmune disease. Some people are beginning to turn gray after 20 years, but they are perfectly healthy. Strong shock or stress can trigger the rapid emergence of a large amount of gray hair.
As a rule, white-skinned people are beginning to turn gray after30 years, Asians are closer to 40 years, and Africans after 40 years. According to studies, the age of onset of gray hair in women becomes earlier. Currently, approximately 32 percent of women are beginning to turn gray before they reach 30 years. This suggests that, besides genetic factors, stress strongly affects hair. Scientific evidence shows that in times of stress in the body is destroyed vitamin B, and its shortage contributes to the appearance of gray hair.
Japanese scientists claim that hairfollicles respond to stress in the same way as DNA. This so-called oxidative stress, and cause environmental pollution, smoking and UV radiation. Also among this kind of stress and emotional stress, there is some connection.
How to deal with gray hair
At the moment wanting to look youngthe choice is limited: to dye your hair or leave them as is, gray. It should be borne in mind that gray hair is difficult to stain due to the lack of melanin.
Researchers from the Institute opened L'Orealinteresting fact. They learned that the skin and hair cells produce the same melanocytes. But with age, the skin does not change color as her hair. The reason for this lack of enzymes in the hair follicles, which are in the skin cells. The researchers hope to develop a drug that could reproduce the effect of enzymes, to hair cells retain the color longer.