Adolescent gray hair is caused by the reduction of melanin particles in the medulla and cortex of hair or by air filling. Under normal circumstances, there are abundant blood vessels in dermal papilla, which provide sufficient nutrition for dermal papilla and hair bulb, and melanin particles are successfully synthesized. When the formation of melanin particles in papilla and hair bulb is hindered, or melanin particles in medulla and cortex of hair cannot be transported to hair due to some factors, white hair will appear. The occurrence of adolescent white hair is generally considered to be related to the following factors:

First, mental factors.

Mental stress, sadness, anxiety, panic and fear are all causes of baldness. Modern medicine believes that bad mental factors will cause vasospasm that supplies hair nutrition, hinder the function of pigment cells in hair papilla and hair bulb to secrete melanin, and affect the formation and transportation of melanin particles.

Second, malnutrition.

Experiments show that if black mice keep eating foods lacking 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. Pigment particles in black hair contain elements such as copper, cobalt and iron. Without these elements, white hair often appears. Besides. Protein lack, severe malnutrition, etc. , 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. And there are also white hair. This is because the disease destroys or interferes with the growth and development of hair papilla and hair bulb pigment cells, making them lose the ability to secrete melanin and hindering the formation of melanin particles.

Fourth, genetic factors.

Juvenile gray hair also has certain congenital factors, and similar situations will occur in parents or family lineages.

References:

Ximanni network

There are many reasons for juvenile gray hair, and its occurrence time, amount and progress speed vary from person to person. Affected by environmental and nutritional conditions and controlled by heredity. Generally speaking, parents have early gray hair and children often have early gray hair.

The formation of juvenile gray hair is closely related to malnutrition, especially the lack of vitamin B, folic acid and pantothenic acid. Hair turns white most easily. Pig liver, beef liver, meat, eggs, vegetables and rice bran are rich in B vitamins. Eat more of these foods.

Conducive to the growth of hair color. Secondly, mental factors will also increase people's white hair in a short time. Excessive mental stress, anxiety, severe trauma and headache will cause abnormal nervous function, hair nutrition disorder and white hair.

Some chronic diseases, such as tuberculosis, malignant tumor, gastrointestinal diseases, etc. , will make the hair gray early because of weakness and malnutrition. In addition, endocrine disorders such as decreased thymus level and hypogonadism can also cause gray hair.

Can juvenile white hair become black hair? Practice has proved that spontaneity is not irreversible. As long as the hair mother cells in the papilla exist normally, the hair can still turn black unless some obstacles or pathogenic factors are removed. Therefore, there is no need to worry too much about some white hair.

Otherwise, it may cause a vicious circle and only produce more white hair. White-haired teenagers should not worry all day, keep cheerful, pay attention to the combination of work and rest, adjust their diet structure, and eat more foods rich in vitamin B and foods containing trace elements such as copper, zinc and iron (such as black sesame seeds and walnuts). Appropriate head massage to increase scalp blood circulation is also conducive to promoting the synthesis of melanin particles, thus making hair black. It is also effective to use traditional Chinese medicine to replenish blood and kidney.