How does white hair form? Mental factors

summary

Young people have white hair because the melanin particles in the medulla and cortex of the hair are reduced or filled with air. Under normal circumstances, there are abundant blood vessels in the dermal papilla, which provide sufficient nutrition for the dermal papilla and the hair bulb, and melanin granules can be synthesized smoothly. When the formation of melanin granules in the hair papilla and hair bulb is obstructed, or although the melanin granules are formed, but due to some factors. Can not be transported to the hair, so that the hair medulla, cortex part of the melanin particles reduce, disappear, white hair will appear. The causes of juvenile white hair are generally considered to be related to the following factors:

How does white hair form? Mental factors

First: mental factors: mental tension, sadness, anxiety, panic and fright are the causes of ShaoBaiTou. According to modern medicine, unhealthy mental factors can cause vasospasm in the blood vessels supplying hair nutrition, which can hinder the function of melanin secretion by pigment cells in the hair papilla and hair bulb, and affect the formation and transportation of melanin particles.

Second: malnutrition: experiments have proved that if the black rats eat food that lacks folic acid, pantothenic acid and vitamins, their hair will turn gray. In addition, the color of hair pigment particles is often related to the metal it contains. Black hair pigment particles contain copper, cobalt, iron and other elements, if the lack of these elements, often appear white hair. In addition. Lack of protein, serious malnutrition, can also grow white hair.

Third: suffering from chronic diseases: some people suffer from autonomic nervous dysfunction, hyperthyroidism, tuberculosis, typhoid fever, endocrine disorders, and so on, but also white hair. This is because the disease destroys or interferes with the growth and development of hair papilla and hair globulin cells, which makes them lose the ability to secrete melanin and hinder the formation of melanin granules.

matters needing attention

If you eat too much sweets, it is easy to give birth to white hair. Researchers in the United States have found that women in their 50s who eat too much sweets can accelerate cell aging. According to reports, this is because sugar belongs to acidic food. If you eat a lot of sugar, the alkalinity of body fluids will become neutral or weak acidic, which will promote cell aging, make the human body's environmental adaptability poor, and make the hair yellow and white.