What's the reason for white hair on both sides

summary

Young people's hair is mostly black and shiny, while old people tend to have gray hair. What's the factor that determines hair graying? How to find the cause of hair graying? Let me introduce it.

What's the reason for white hair on both sides

First: black hair contains a kind of melanin, the more melanin content, the darker the color of hair; on the contrary, less melanin content, the lighter the color of hair. With the continuous metabolism of the human body, we know that there are signs of aging, the unique pigment cells in the hair follicle stop producing melanin, the hair will start to turn white because of the lack of melanin, and then white hair will appear.

Second: because the body does not have a unified secretion of melanin glands, melanin is produced in each hair, so white hair is always one by one. Generally, it's better to turn white for many years, but there are a few rare diseases that can make people turn white overnight. Although everyone's hair turns white for different reasons, it usually occurs after the age of 30 in men and around 35 in women. And some people in their 20s are white, medically known as juvenile white hair, commonly known as "little white head".

Third: the premature appearance of white hair is mainly caused by heredity. Generally speaking, people with a little family history of white hair are very likely to have white hair. However, the time, amount and progress of white hair vary from person to person, and are affected by the environment and nutritional conditions. In addition to genetic factors, the lack of nutrition (protein, vitamins, iodine, etc.), mental stress and anxiety, and hair washing are the main reasons After wet head to sleep, suffering from some chronic diseases and endocrine disorders, the use of poor quality hair dye, cosmetics and bad eating habits will make white hair appear early.

matters needing attention

Malnutrition, such as the lack of protein, vitamins and some trace elements (such as copper), will make the hair white, usually pay attention to the healthy intake of diet.