Causes of gray hair

Modern industrialization is constantly developing and people's living standards have been greatly improved. However, the various environmental and chemical pollution that comes with the development of industrialization is also a problem that we cannot ignore. Environmental pollution affects our daily work and living environment, causing the incidence of certain diseases to continue to rise. Juvenile graying of hair is also one of the diseases that is becoming increasingly serious due to environmental pollution.

I believe many people are familiar with the word white hair. In ancient times, if we needed to describe an old man, we could use the word "white-haired". However, as hair tends to gray with age, we don’t need to and cannot judge a person’s age solely based on the color of their hair. In fact, there are many reasons for gray hair besides environmental factors. Let’s take a brief look at them below.

Gray hair is caused by the reduction of melanin particles in the medulla and cortex of the hair or their filling with air. Under normal circumstances, there are abundant blood vessels in the hair papilla, which provide sufficient nutrition to the hair papilla and hair bulb, so that melanin granules can be synthesized smoothly. Gray hair occurs when the formation of melanin particles in the hair papilla and hair bulb is obstructed, or when they are formed but cannot be transported to the hair due to some factors, causing the melanin particles in the hair medulla and cortex to decrease or disappear.

Causes of gray hair:

1. Mental factors

Mental stress, sadness, anxiety, panic and fright are all causes of premature graying of hair. Modern medicine believes that negative mental factors can cause spasms in the blood vessels that supply nutrients to the hair, causing dysfunction in the melanin secretion function of the pigment cells in the hair papilla and hair bulb, affecting the formation and transport of melanin particles.

2. Nutritional imbalance

Experiments have shown that if black rats continue to eat food lacking folic acid, pantothenic acid, vitamins, etc., their fur will turn grayish white.

3. Genetic factors

Juvenile graying of hair also has certain congenital factors, and similar situations may occur in parents or family bloodline.

4. The harm of hair dyeing

Young people like to use chemical hair dyes and shampoos to dye their hair black to deal with premature gray hair. You should know that frequently using chemical dyes to dye your hair will bring certain toxic side effects and be detrimental to your health. Hair dye is a commonly used cosmetic for people with gray hair, but it can cause hair dye dermatitis and should be used with caution.

The above are the causes of gray hair. We can see that there are actually many causes of gray hair. In addition to environmental and genetic factors, hair dyes can accelerate the speed of our hair turning gray. Therefore, friends who love beauty should not dye their hair frequently, as dyeing is not conducive to the healthy growth of our hair.