Japanese researchers found that lack of sunlight can cause insomnia in the elderly, according to Reuters Health. The studies were conducted in 10 nursing homes. It turned out that the increase in time spent in the sun, affected the patients' sleep: insomnia people are sleeping much better.
Exposure to sunlight increases the production of melatonin - the hormone, according to doctors, regulating sleep. Some studies suggest that melatonin in the human body decreases with age. It can be concluded that the replenishment of melatonin in the body to help fight insomnia.
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