What is the reason for white hair

summary

White hair is a common disease. It is a physiological phenomenon that the aged hair turns gray or white, which is caused by the progressive loss of tyrosinase activity in melanocytes and the disappearance of pigment in hair stem. Young people have white hair because the melanin particles in the medulla and cortex of the hair are reduced or filled with air. Due to some factors, nutrients can not be transported to the hair, so that melanin particles reduce, disappear, white hair will appear. So, let's find out why hair is white? What are the reasons for white hair? Now let me introduce it to you

What is the reason for white hair

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.

Malnutrition experiments have shown that if the black rat has been eating food that lacks folic acid, pantothenic acid, vitamins and so on, its 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.

Suffering from chronic diseases, some people suffer from autonomic nervous dysfunction, hyperthyroidism, tuberculosis, typhoid fever, endocrine disorders, and so on. 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

White hair is not terrible, you must not have a fluke. Don't think it is a small thing and delay the best time to treat white hair, otherwise delay the disease may cause a vicious circle, produce more white hair.