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What phenomenon is causing billions of people around the world to lose sleep?

Data shows that many people are increasingly suffering from insomnia, especially women and the elderly, with serious implications for their health. health.

What phenomenon is causing billions of people around the world to lose sleep?  - 1 . photo

Temperature Higher global is making it hard for many people to sleep

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Sheet The Guardian May 21 leads a large-scale study showing that the increase in temperature due to climate crisis is making many people sleep on world shortened.

Good sleep is important for health, but global warming is raising temperatures at night, even faster than during the day, making it difficult for many people to sleep.

The analysis found that the average global citizen lost 44 hours of sleep annually, resulting in an average of 11 nights of less than seven hours of sleep, the standard level for getting enough sleep.

Insomnia will increase further as the earth gets warmer, but certain groups of people will be impacted more. Insomnia rates are about a quarter higher in women than in men, twice as much for people over 65 and three times as for people in less affluent countries.

The researchers used data from sleep-tracking bracelets used by 47,000 people over a total of 7 million nights in 68 countries.

Previous studies have shown that rising temperatures have health effects such as increased risk of heart attack, suicide and mental health crisis, in addition to accidents, injuries and reduced ability to work.

More worryingly, the data shows no sign of humans being able to adapt to hotter nights.

“For most of us, sleeping is a very familiar part of our daily routine, we spend almost a third of our lives sleeping. But more and more people in many countries around the world don’t get enough sleep,” said Kelton Minor at the University of Copenhagen (Denmark) who led the study.

“In this study, we present the first planetary-wide evidence that warmer-than-average temperatures affect sleep. In fact, that may just be the tip of the iceberg, because a lot of our estimates are conservative,” he said.

According to him, higher night temperatures affect the sleep of many people. For example, the night temperature is higher than 250C in a city of 1 million people will cause 46,000 more people to sleep less.

“And if you watch the heat wave in India and Pakistan today, we’re talking about billions of people in a situation that makes them sleep-deprived,” Minor said.

Research published in the journal One Earth analyzed sleep and outdoor temperature from 2015-2017 and found that higher temperatures made it difficult for people to sleep. Body temperature needs to be lowered every night while a person sleeps, but this becomes more difficult due to weather hot.

According to Mr. Minor, planners policy It is important to ensure that cities, towns and buildings are well adapted to heat in order to reduce the impact on human health, especially sleep deprivation.

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