Vitamin D and insomnia: a connection you may not know about

In recent years, scientists have been paying more attention to the role of vitamin D in human health. Most often it is associated with bones, immunity and general well-being, but few people think about the fact that this vitamin can affect sleep. Insomnia is a common problem in modern society, and new research shows that vitamin D deficiency may be one of its hidden causes.

Vitamin D is involved in the functioning of the nervous system and the production of neurotransmitters that regulate sleep and wake cycles. When vitamin levels are low, the balance of these chemicals is disrupted, which can lead to difficulties falling asleep or interrupted sleep. People with chronic insomnia often have reduced levels of vitamin D, which leads scientists to look for a direct link between this micronutrient and sleep quality.

Research shows that vitamin D supplements can improve sleep duration and depth in people with deficiency. Moreover, an adequate amount of the vitamin helps the body produce serotonin - the "happiness hormone" that plays an important role in sleep regulation. This explains why vitamin D deficiency can cause not only fatigue and reduced immunity, but also anxiety, irritability and insomnia.

Another interesting aspect is the connection between sunlight, vitamin D and biorhythms. Our body gets most of vitamin D through the sun's impact on the skin. Lack of sunlight, especially during the autumn-winter period, reduces vitamin levels, and therefore can exacerbate sleep problems. This explains why in winter many people feel lethargic and have trouble falling asleep.

To maintain optimal levels of vitamin D and improve sleep, experts recommend spending time outdoors in sunlight, including foods rich in this vitamin in the diet, and if necessary, taking supplements after consulting with a doctor. Sleep improvement doesn't always come instantly, but balancing vitamin D can be an important step towards quality and healthy rest.