A STUDY published in Current Biology reveals that people who live in modern, industrialized societies sleep more than inhabitants of remote villages.
A conclusion that contradicts generally accepted ideas.
Do you sleep badly? Don't be too quick to blame the screens that form part of modern life. Researchers have analyzed the sleep of people who live in remote rural areas in Africa and South America, comparing it with how westerners sleep.
These people sleep for an average of just under 6.5 hours a night. By way of comparison, sleep in industrialized societies is generally 7 to 8 hours a night.
"We find that contrary to much conventional wisdom, it is very likely that we do not sleep less than our distant ancestors", says the main author of study, Jerome Siegel, a sleep researcher at the University of California, Los Angeles. It would seem that, despite smartphones and ever-present screens, we do not stay awake longer now than in prehistoric times.
To arrive at this conclusion the researchers looked at the sleeping habits of various hunter-gatherer societies in Tanzania, Namibia and Bolivia. The researchers believe that the sleeping habits of these societies reflect prehistoric human behavior. They also noted that, despite the differences in their history and in their environment, all these people had similar sleeping habits.
Less insomnia
The researchers also noted that insomnia was more of a rare occurrence in the past than it is now. It currently affects 20% of people in the US at some point in their lives. The study revealed that it only affects 1.5-2.5% of hunter-gatherers more than once a year.
Jerome Siegel says that these peoples in general went to sleep just over three hours after sunset. In the evening, they prepared the meal, they ate, and they made plans for the next day. They woke up before sunrise.
The researchers believe that sleeping time is linked to temperature: the hunter-gatherers, who suffer very little from insomnia, sleep for an hour more in winter than in summer. Therefore, in order to help with insomnia in the west, the researchers postulate that it could be interesting to imitate natural conditions, such as temperature and that changing such aspects of the sleeper's environment could help to control sleep more effectively than any medicine.
The conclusions of this study can be found online from October 15 in the journal Current Biology.
AFP RELAXNEWS
Sat Oct 17 2015
Insomnia affects an average of 20 per cent of people in the US. - Photo by Racorn/shutterstock.com
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