Gray hair pigmentation disorder

• April 19, 2024

Although it is not a common cause that motivates the consultation dermatological , the appearance of gray hair is the most frequent disorder of pigmentation in the hair among the population in general.

According to the doctor Juan Pablo Castanedo, member of the Mexican Foundation for Dermatology, said that this capillary phenomenon occurs in all individuals to be part of the process of aging , where the cells that produce hair color are reduced by 10 to 20% in each decade of life.

The health expert said that it has been seen that there is depigmentation premature four times more in people smokers than in those that are not.

In addition, it is possible that exposure to ultraviolet radiation solar influence on its appearance, as well as the stress emotional.

The white hair They appear equally in men than in women, but it is men who usually start the process in the area of ​​the temples of the head. Hence, the ancient doctors called this region of the skull as the "temporal area." In women they usually appear in the front line of the hair.

Castanedo said that gray hair is harder to manage and comb than normal; its structure is also different. It has been noticed that gray hair on the face grows four times faster than the normal color.

More gray hair in white people

The white hair They occur in white people of Asian origin between 30 and 40 years, however, in black people this process occurs later, at approximately 45 years.

It is also known that 50% of the population in general manifests gray hair during the fifth decade of life. However, heredity influences its rapid or slow progression, therefore, when white hair appears before the age of 20, it is considered premature graying with hereditary factor .

Hair color is determined by a substance called melanin . Therefore, gray hair appears when the production of this pigment in the hair root decreases progressively, either due to the reduction in the number of hair melanocytes (cells that produce it) or due to a lack of production.

It is important to note that the white hair should not be confused with other disorders such as poliosis (white hair strand), a genetic process from childhood or graying, due to other acquired diseases such as vitiligo .

Video Medicine: This is the real scientific reason why your hair is turning grey / How to reverse grey hair (April 2024).