Gray hair can appear even in young people. In some cases, this is a normal phenomenon, while in others, it is a sign of diseases. How to understand the causes of early graying? This is explained by endocrinologist Yulia Sidorkina.
The color of hair is determined by the presence of melanin — a pigment produced in the melanocyte cells located in hair follicles. When melanin production ceases, hair loses its color and turns gray.
With age, melanin production declines, which is why gray hair becomes a sign of natural aging changes. Usually, the first gray hairs appear at the age of 25-30. For Mongoloid and Caucasoid races, the appearance of gray hair before the age of 25 is considered early graying, while for the Negroid race, it is before the age of 30.
There is a belief that men start graying earlier than women. In men, the first gray hairs appear in the beard and temples, while in women, they appear in the occipital and parietal regions of the head.
What can cause early graying?
The main causes include hormonal disorders (for example, problems with thyroid or pituitary function), diseases of the digestive system, autoimmune diseases, as well as deficiencies in vitamins and trace elements (such as zinc, copper, iron, calcium, B vitamins, and vitamin D). An increased need for these substances may arise during pregnancy and lactation, as well as when taking certain medications that affect the metabolism of vitamins and trace elements.
An unfavorable environmental situation, including prolonged exposure to electromagnetic waves or ultraviolet radiation, as well as working in harmful production conditions or harsh climates, can also contribute to early graying.
A lack of protein negatively affects melanin production, so early graying may be a consequence of strict diets or vegetarianism.
Can stress be a cause of early graying?
In stressful conditions, hormones cortisol and adrenaline are released into the blood, leading to vasospasm and impaired blood circulation, as well as nutrition of hair follicles. Additionally, stress promotes the formation of free radicals, which can damage melanocytes.
When is early graying considered normal?
Genetics play an important role in the development of gray hair. Therefore, early gray hair may be normal for those whose parents also grayed early.
How to prevent the appearance of gray hair?
It is important to ensure adequate sleep (at least 7 hours), engage in physical activity, and maintain a balanced diet that provides enough protein. It is recommended to consume foods rich in Omega-3 fatty acids and B vitamins (dairy products, meat, seafood, fish, nuts, avocados, flaxseed and olive oils). It is also necessary to drink enough water.
