Scientists announced why it was more difficult for sleep and health in summer at 23 July 2025, 13:30

In summer, melatonin production is shifted for about 30-60 minutes and dawn penetrate the bedroom before. This can greatly affect the sleep time.

During a study, scientists under laboratory conditions followed 188 people three nights at different times of the year. In the summer, the dream as a whole was found to be about an hour shorter than winter. This was due to the rapid sleep stage.

The same researcher team later watched 377 patients for two years. Experts found that the sleep and fast sleeping phase began to decrease within five months after the last cold spring night. On average, the duration of sleep participants decreased by 62 minutes and the fast sleeping phase is about 24 minutes.

Large -scale surveys confirms the results. In a study of more than 30,000 Canadians, they said they slept less than 8 minutes less than those who interviewed in the middle of the summer in the middle of the summer. In addition, the participants interviewed in the summer months announced a more pronounced insomnia in two weeks after the autumn translation of the clock.

Another study has shown that Tromso (Norway) residents have a much higher day fatigue and insomnia during the summer months (according to their own estimates). The inhabitants of Akkra (Ghana near the Ecuador) almost did not change.

Another factor that can break the dream in summer is temperature. Laboratory experiments show that the increase in 26 to 32 degrees Celsius increases the awake period and reduces slow and fast sleeping stage.

A chronotype (“owls” and “larks”), mental health, alcohol use and melatonin production suppressing beta blockers can be affected in the summer months.

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