Wu night bald everyone heard the story. But really anxious night snow it can be made?
50-year-old people, about half of white hair and clear. Typically, there will be hair occurs between 30-35 years of age, but after aging rate due to racial differences and different. Caucasian white hair longer than Asian yellow race and black people earlier.
Because stress can lead to hair loss, it may also cause hair reduction, so that the hair is more pronounced. To be discussed is whether stress causes hair from the roots of white or gray, one should first understand why the human hair is colored.
We have thousands of head of hair follicles, each follicle can grow hair. Keratinocytes generate keratin, thus the formation of hair (our skin and nails is keratin formation). Long hair out of the follicle in the past, melanoma cells to the keratin inject melanin. When our hair began to turn white, also shows that the number of melanin started to decline. When hair is all white, it means that the hair has no melanin.
Between pressure and gray hair does not have any direct contact. If you want to find out when it will be your own hair turned white, just need to focus on the parents change because our genes seem to be able to decide what can grow in hair follicles.
In 2004, the Boston Dana - Farber Cancer Institute researchers in the study found that melanoma could be melanin in the skin cells overproduction, triggering skin cancer. When trying to understand more of the nature of melanoma cells, the researchers found, most likely because white hair melanocyte stem cells supply due to depletion. Even before these melanoma stem cells disappear completely, they begin to have adverse effects, such as hair follicle pigmentation improper position, so the hair no longer play any role.
In 2009, European researchers said the white hair is due to the hair follicles of hydrogen peroxide over time caused by excessive accumulation. Their next study is to verify the operation of hydrogen peroxide is increased by the pressure caused by the driver or chemical substances. But even if there is a trace found a link between stress and the accumulation of hydrogen peroxide, the researchers warned that the root cause may have to return to the genetic parents. In fact, we have the ability to withstand a lot of pressure, or dependent on genetics, that is, if you are unfortunate enough long white hair, can only regret to say that your genes did not escape fate.
(The answer from finishing HowStuffWorks)
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