Neuroscientists at the American Academy of Neurology have found that the transition from summer time to winter time and the change of seasons negatively affect a person’s sleep, causing short-term sleep disturbances. Results of the study published in the journal Neurology.
The study involved 30,000 people who filled out a questionnaire about sleep duration and sleep satisfaction, excessive daytime sleepiness, and the ability to fall asleep quickly. Participants took this survey several times a year, one week before and one week after the standard time change.
The researchers found that after switching from daylight saving time to standard time, the risk of being dissatisfied with sleep increased by 34%, the risk of feeling sleepy and having trouble falling asleep more than doubled, and the risk of experiencing sleep difficulties increased by 64%. The transition to daylight saving time did not bring such problems.
Researchers found little difference in sleep duration depending on the time of year. People who filled out the survey during the summer had the shortest sleep duration, with an average of 6.7 hours per day. In winter, on the contrary, the duration of sleep increased and averaged 6.8 hours a day.
Source: Gazeta
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