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The article was translated into English using automatic translation. The editors are working on its improvement.

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As you know, hair color is determined by the work of melanocytes, which are located in the hair follicle and synthesize the pigment melanin. There are two types of this pigment: pheomelanin and eumelanin. The first gives the hair follicles light shades: gray and yellow, and the second is responsible for black and brown hair. Melanin is what colors the hair, and depending on the amount of pigment synthesized, the hair can have one or another shade. With age, the functioning of melanocyte cells deteriorates, the process of melanin synthesis is disrupted, and in connection with this, the hair begins to turn gray. The norm is for the first gray hair to appear at around 30–35 years of age. According to genetic characteristics, fair-skinned people lose hair color at an earlier age, then Asians, and even later dark-skinned people. There is also a pattern in the areas where gray hair appears on the head: gray hair appears first at the temples, then at the crown. In most cases, the back of the head is the last place to go gray.<h2 style="text-align: center;"> What are the causes of early gray hair?</h2> The first and most important thing is genetics . If a family turns gray early, there is a high probability that all generations will have to take up the baton. Sometimes echoes of early graying come from the distant past - from great-great-grandfathers, about whom current descendants may not remember or really know. Another significant reason for early gray hair is impaired functioning of the thyroid gland and changes in the hormonal sphere. An imbalance of hormones such as TSH (thyroid-stimulating hormone), free T4 (thyroxine), and anti-TPO antibodies (antibodies to thyroid peroxidase) can provoke changes in endocrine status and a number of serious diseases. One of the most minor consequences is early gray hair. The next reason is nutrition . This reason cannot be considered an independent factor that directly leads to early gray hair, however, an unbalanced diet will not have the best effect on the condition and color of the hair. First of all, we are talking about important microelements, such as B vitamins, iron, copper and selenium. As doctors note, some antitumor, antimalarial drugs, as well as drugs for the treatment of autoimmune diseases can lead to disruption of melanin synthesis and, accordingly, graying. Hair loses color due to exposure to aggressive substances (for example, dyeing, bleaching), as well as during radiation therapy under the influence of ionizing radiation.<h2 style="text-align: center;"> What myths exist on the topic of early gray hair?</h2> The first and most common is that hair can turn gray due to stress. In a few days of stressful situations, hair will not turn gray, but “delayed” for a couple of months, it may begin to fall out more. Perhaps the false impression that stress has caused a person to turn gray is due to the fact that the overall mass of hair has decreased and gray hair has become more visible. The second myth is that early gray hair is more typical for brunettes/brunettes. In fact, everyone turns gray the same way, it doesn’t depend on hair color. Gray hair is indeed more noticeable on black hair, but the predisposition to it is in no way determined by the color of natural curls.

Reasons for early gray hair: let’s understand the issue