Lack of sunlight significantly reduces the production of serotonin.
A deficiency of the happiness hormone affects a person’s performance and mood.
Lack of natural light affects work, causes drowsiness and worsens mood, RIA Novosti writes.

According to Oksana Balabaeva, a pulmonologist at Invitro-Voronezh, a lack of sunlight is directly related to the production of the happiness hormone.
In conditions of prolonged darkness, the risk of depression increases.
Serotonin also affects the functioning of the nervous system, gastrointestinal tract and endocrine organs.
Due to a lack of natural light, there is a deficiency of vitamin D, which negatively affects the immune system.
Balabaeva reminded that following simple rules will help combat the winter blues.
During periods of insufficient sunlight, the following are necessary:
- healthy sleep, physical activity, walking, dancing, music.
According to the doctor, contrast showers, warm baths and light therapy will also help relieve daytime stress and strengthen the immune system.