We all know the feeling: A particularly stressful period, mental tension, poor sleep… and suddenly more gray hairs appear. It may sound like a cliché, but it turns out it’s not just “in our head”. In recent years, studies have been published showing a direct link between stress and the early appearance of gray hair.
In one study published in the journal Nature it was found that stress activates the nervous system and causes damage to the stem cells that produce melanin, the pigment responsible for hair color. When these cells are damaged, the ability to produce color simply disappears.
Not only that – stress also increases oxidative stress in the body, harms the antioxidant balance, and affects levels of essential vitamins and minerals, exactly those nutritional components that are important for maintaining hair color. That is, gray hair is not only a matter of age but also a combination of stress, nutrition and what is happening inside our body.
Can this process be influenced through what we eat? The answer, at least in some cases, is yes.
How does nutrition affect hair color? Hair color is determined by a pigment called melanin, which is produced in cells called melanocytes in the hair follicles. Over the years – melanin production decreases, and the result is gray hair. If this process occurs at a very young age it may indicate a nutritional problem or increased oxidative stress in the body.
Oxidative stress is a condition in which there is an excess of free radicals, molecules that damage cells – and a decrease in antioxidant levels. It can be caused by environmental pollutants, smoking, mental stress, and also poor nutrition. For example: A study published in the journal "International Journal of Trichology" found that young people with early gray hair had lower levels of vitamin B12, copper and iron, compared to a control group.
Other studies have suggested that a deficiency in folic acid and biotin may harm hair health and accelerate the appearance of gray hair. At the same time, a diet rich in antioxidants was found to be associated with maintaining normal hair pigmentation.
Nutritional components that can make the difference:
– Vitamin B12 is essential for the proper function of pigment cells in the hair. A deficiency in it may cause acceleration of the graying process. This vitamin is found in beef, chicken, fish, eggs and dairy products.
– Iron is involved in transporting oxygen to cells – including hair cells. A deficiency in it may cause hair loss as well as early gray hair. This vitamin is found in red meat, lentils, tofu, nuts and oats.
– Copper affects the activity of the enzyme tyrosinase, which is directly involved in melanin production. Good sources: Dark chocolate, liver, cashew nuts, mushrooms and seeds.
– Folic acid (vitamin B9) and biotin (B7) contribute to the renewal of hair cells and maintaining a proper hair structure.
– Folic acid: Green vegetables such as broccoli, lettuce and spinach.
– Biotin: Egg yolk (especially when it is half cooked), nuts, legumes and soy.
– Vitamin C: A strong antioxidant that protects melanin cells. Also helps with iron absorption from plant sources.
Found in citrus fruits, kiwi, red pepper, strawberries and prickly pear.
Hair dyeing: Frequent use of hair dyes raises concerns about possible health effects, due to exposure to various chemicals found in them, but it is important to emphasize, that a review of the available information does not show clear scientific studies that prove that hair dyeing causes significant health damage. Possible effects probably depend on the type of dye, frequency of use, and individual sensitivities.
So back to the beginning – shine and vitality start from within: According to the studies, even during periods of stress – as much as possible, in order to delay the appearance of early gray hair, it is important to maintain a diet rich in iron, vitamin B12, folic acid and copper.
Incorporate foods rich in antioxidants such as vegetables, fruits and quality oils – which reduce oxidative stress and avoid as much as possible processed nutrition and chronic stress, which may accelerate the process.