In our minds, there seems to be a fixed pattern of thinking: all those with white hair are old people, but sometimes, we can see young people with white hair. How to explain that there are several white hair students in junior high school?
Why do young people have gray hair? Why can appear little white head?
First of all, we need to find out why our hair is black. That's because there are melanocytes in the hair bulb and hair follicle at the root of the hair. They can synthesize a large number of melanin particles, which are continuously transported to the hair to make it black. That is to say, the more melanin particles, the blacker the hair, and vice versa, it will become lighter and whiter.
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Why do young people have gray hair? Why can appear little white head?
The factors that cause the hair to turn white are: 1. Age factor. With the growth of age, the synthesis ability of the body decreases, which makes the hair turn white (people also gradually grow old);
2、 Genetic factors, some families have a family history of juvenile hoarseness, at present, hereditary little white head can not be treated;
3、 Nutritional factors, due to the lack of folic acid, vitamin B or lack of copper, zinc and other trace elements in the diet, can lead to white hair, and dry, easy to break;
4、 Environmental factors, due to environmental pollution, long-term exposure to the sun, so that hair yellow and white;
5、 Spiritual factors, Chinese ancient people have long recognized the relationship between mental factors and hoarseness, too much mental pressure is easy to lead to early white hair.
To sum up, there are many reasons for gray hair, we can analyze the specific situation, in order to find out the causes of juvenile white head, but it is particularly important to keep a good mood and open mind, and pay attention to prevent white hair caused by mental factors.
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