Why do some people have more white hair and some people have less white hair?
How is white hair formed? On this issue, we must first understand that white hair is actually a very normal physiological phenomenon, and in most cases it is not caused by any disease. Generally speaking, when people are around 40 years old, their hair begins to turn white. Of course, everyone has individual differences. 40 years old is just an average, not a definite value. For example, many men generally begin to turn white at the age of 30, while most women begin to turn white at the age of 35.
There are many reasons why hair turns white, but the most essential reason is that melanin has changed. We are called the yellow race, and the headlines are naturally black. White hair is the result of three factors: less melanin, loose intercellular space, air entry and light reflection.
When the black corpuscles decrease, the original melanin in hair will decrease or even disappear. The original color of hair without melanin is actually the color of protein, which is yellow. However, we usually see that the hair turns white and there is also the influence of light. Hair without pigment has a white effect after light reflection. Therefore, we will find that the essential cause of white hair and the lack of melanin in the skin are actually the same thing.
Generally speaking, when people reach 40 years old, the melanin produced by melanocytes will gradually decrease, so at this time, people's hair will gradually turn white. However, we will find that many people begin to turn gray before they are 40 years old, and even some people 10 years old begin to turn gray, so what is going on?
Fundamentally speaking, this is actually caused by the imbalance of melanin secretion. If the endocrine is normal, a large amount of melanin can be synthesized, and the hair will turn black. On the contrary, the endocrine is abnormal, and the synthesized melanin is less, and the hair will turn white. What factors affect the disorder of melanin secretion?
The causes of melanin secretion disorder actually affect melanin secretion disorder for many reasons, such as diseases.
Patients suffering from gastrointestinal diseases, diabetes, malignant tumors, tuberculosis and other infectious diseases and chronic local inflammation for a long time will have different degrees of melanin secretion disorders, which will cause white hair. In addition, bacterial infections and nervous system problems can also lead to white hair.
In addition to some diseases, malnutrition can also lead to white hair. This is because hair is also a part of our body, and it also needs adequate nutrition, especially some trace elements, such as iron and copper. If there is a long-term lack of influence and trace elements, melanin cannot be synthesized, melanin decreases and hair turns white.
We often think that mental stress is the main reason for long white hair. Secondly, this statement is correct. If people are in a relatively negative mental state, or face great mental pressure, it will also cause insufficient melanin secretion, resulting in white hair. But there is no such thing as Wu Zixu getting old overnight as recorded in ancient history books. This record is more deductive. Generally speaking, hair turns white slowly, not at once.
Also, if you use some fake and shoddy hair dyes, conditioners and other products, it may also cause white hair. These are actually more caused by the day after tomorrow. The most important factor leading to baldness is actually heredity, which is congenital.
Misunderstanding about white hair? White hair? There are many misunderstandings. The above-mentioned one-night hoary head is a rumor that has been passed down through the ages, and even there are similar descriptions in many literary works. In addition, there is a common misunderstanding in daily life: the more white hair is pulled out, the more it is.
The versions circulated in many places are still different. For example, some say that pulling a white-headed strip is seven long, while others say that pulling one will make it grow a pinch. Even many parents will educate their children like this. What we need to know is that the cells that produce melanin are actually in the roots of hair, and hair is actually a hair follicle and a hair.
Therefore, if the hair root is not damaged, it turns out to be white hair, but the number will not change, not only will it not decrease, but it may also cause damage to the hair root or hair follicle when it is pulled out, resulting in the possibility of no longer growing hair. Therefore, the more white hair is pulled out, the less it may be pulled out.