Speaking of white hair, the first one in our mind must be the old man. However, in our side, not only the elderly will have white hair, some young people will also have white hair. What's going on? Let's take a look with Sihai Xiaobian.
Why do young people grow gray hair? Why does black hair turn white? How is little white head formed?
First of all, we need to find out why our hair is black. That's because there are melanin cells in the hair bulb and hair follicle at the root of the hair. They can synthesize a large number of melanin particles and continuously transport them to the hair to make it black. That is to say, the more melanin particles there are, the blacker the hair is. On the contrary, it will become lighter and whiter.
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The factors that make the hair white are: 1. Age. With the growth of age, the synthetic ability of the body decreases, which makes the hair white (people are also gradually aging);
2、 Genetic factors, some families have a family history of juvenile leukorrhea, at present, hereditary less leukorrhea can not be treated;
3、 Nutritional factors, due to the lack of folic acid, vitamin B or 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, make hair yellow and white;
5、 The ancients of our country recognized the relationship between mental factors and white head very early. Too much mental pressure is easy to lead to early birth of 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, open mind, pay attention to prevent mental factors leading to white hair.
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