Vitamin D Deficiency in Winter: How to Recognize and Get Your Norm.

According to ТСН: With the shortening of daylight hours in winter, many people experience fatigue, drowsiness, and increased susceptibility to viruses. What is often considered seasonal blues may simply be a lack of vitamin D, which the body does not receive due to a lack of sunlight.

How to replenish vitamin D levels in winter, whether food alone is sufficient, and what symptoms indicate its deficiency will be discussed further.

Why Vitamin D is Necessary and in What Quantities

Vitamin D helps the body absorb calcium and phosphates, which are essential for bone, tooth, and muscle health. Together with calcium, it protects against osteoporosis—a condition that leads to weakened bones and increases the risk of fractures.

This vitamin also strengthens the immune system, affects the functioning of the thyroid gland, and is involved in transmitting nerve impulses from the brain to various parts of the body.

The recommended daily intake of vitamin D varies depending on age and health status: 400 international units (IU) for children under one year, 600 IU for individuals aged 1 to 70 years, and 800 IU for those over 70 years.

How to Get More Vitamin D from Food

Vitamin D is unique because it is produced under the influence of sunlight. However, during the winter or when spending long periods indoors, it is essential to obtain it from food.

Doctors believe that getting enough of this vitamin solely from food is challenging.

The highest concentrations of vitamin D are found in fish. Cod liver, trout, tuna, salmon, and mackerel, as well as red caviar, are sources of this important vitamin.

There is slightly less vitamin D in animal products such as egg yolk, hard cheese, and beef.

How to Get Vitamin D in Winter

Spend time outdoors

Even short winter days are not a reason to refuse walks. Just 15-20 minutes in the midday sun is enough to recharge. If it’s freezing outside, just expose your face and hands to the sunlight—this is sufficient for vitamin D synthesis.

Consume foods rich in vitamin D

Vitamin D is found, in particular, in fatty fish; however, the average diet of many people does not provide enough.

Consider taking supplements

The choice of vitamin D is not simply about buying any supplement at the pharmacy. Since it is a fat-soluble vitamin that accumulates in the body, it is important to choose it responsibly.

Consult a doctor before taking, to determine safe dosages, form (D3 or D2), composition, and accompanying components.

Try a UV lamp

Long gray winters can be tough, so a UV lamp may be a helpful addition to provide the body with more vitamin D.

Symptoms of Vitamin D Deficiency

The signs of vitamin D deficiency are often nonspecific and may resemble symptoms of other conditions. To understand whether the reason lies in a deficiency of vitamin D, one should pay attention to external factors—seasonality, region of residence, and frequency of sun exposure.

Key symptoms to look out for include:

• constant feeling of fatigue;

• muscle weakness;

• bones and joint pain;

• mood deterioration, depression, anxiety;

• sleep disturbances (insomnia or difficulty falling asleep);

• slowed tissue regeneration (prolonged healing of cuts or bruises).

Thus, vitamin D is essential for maintaining health, especially in winter when obtaining it from natural sources becomes more difficult. Monitoring its level in the body and proper nutrition can significantly affect overall health. Remember the importance of consulting with a doctor when taking supplements to avoid potential risks.