Young white head, one night white head, white-haired siren, white-haired fairy weng… doctor clove can list many legends about white hair.
But is white hair a sign of physical problems? This will be discussed in detail.
Young white head, is there something wrong with your body?
In fact, people of different ages may have white hair, and the most important determinant is genes.
Genes can [plan] when we have white hair. Usually, the younger parents have white hair, the greater the chance of children having [young white hair].
Does the white-haired [50/50/50 principle] make sense?
There is a saying that 50% of people over 50 will have 50% white hair.
But scientists have proved that this statement is unreasonable.
A French survey of more than 4,000 healthy adults around the world found that only 6% ~ 23% of the 50-year-old people have at least 50% white hair.
You see, most people don’t have as much white hair as they think.
Is it true that I lost my head overnight?
In movies, TV plays or novels, hair often turns white overnight, but this kind of situation does not exist in real life.
Because the black hair that has grown will not turn white unless it is white at birth.
In fact, worrying all night, lack of sleep, anxiety and high pressure may lead to short-term alopecia, and the number of newly grown hair will also increase. Melanin may not meet the demand. As a result, the newly grown hair may be grayish white.
These three situations really make people grow white hair.
1. Lack of nutrition, hair may turn white
Some studies have shown that malnutrition will lead to a decrease in hair pigment and an increase in the probability of white hair.
However, this kind of malnutrition does not refer to the lack of a certain vitamin or trace elements, but is due to long-term hunger, the general intake of various nutrients is insufficient. Now most people have solved the problem of food and clothing and are heading for a comfortable life, so white hair caused by malnutrition is very rare.
However, tyrosine is special, because tyrosine is the raw material for melanin synthesis. If tyrosine is lacking, it will lead to insufficient melanin synthesis and white hair.
2. If you have skin diseases, your hair will turn white.
Apart from being determined by genes, some skin diseases may also cause white hair, such as:
- Vitiligo, albinism and other skin diseases, in addition to changes in skin color, may also be accompanied by symptoms of hair whitening; In some people with alopecia areata, the new hair growing from the alopecia area may be white.
3. Smokers tend to whiten their hair more easily.
Many studies have confirmed that smokers are more likely to have white hair. There are two reasons:
- On the one hand, smoking will increase the generation of oxygen free radicals, which will destroy melanin; On the other hand, smoking will increase alopecia, and the hair follicles of alopecia will grow new hair. Melanin needed for new hair will be destroyed by oxygen free radicals, so the new hair will appear gray.
Therefore, even if you don’t consider the feeling of your lungs and only have black hair, it is better to quit smoking.