Digital Transformation

The habit of surfing the phone in bed increases the risk of insomnia by 59%

Collaborator DNUM_BIZAEZCACF 06:07

Scrolling through your phone before bed may seem harmless, but it’s secretly harming your sleep. Research shows that just one hour of device use in bed can increase your risk of insomnia by up to 59%.

Many of us have the habit of staring at our phones before bed, whether we know it’s good or bad. But this seemingly harmless habit can seriously affect our physical and mental health. Experts recommend that it’s time to leave your phone out of the bedroom at night.

Using screen devices in the evening not only increases the risk of insomnia, but also significantly shortens the amount of sleep you get each night, according to a new study.

In one of the largest surveys on the topic, the Norwegian Institute of Public Health analyzed data from 45,202 young people aged 18–28.

Results showed that just one hour of screen time in bed can increase the risk of insomnia by up to 59% and reduce sleep time by an average of 24 minutes per night.

Notably, the type of content consumed on screen did not appear to make a significant difference. The study, published in the Swiss journal Frontiers in Psychiatry, found no significant link between social media use and other forms of entertainment on devices.

This contradicts previous hypotheses, which suggested that social media causes stronger insomnia because of emotional stimulation and increased interactivity.

Instead, the researchers concluded that it was screen time and especially exposure time that had a profound impact on sleep quality.

Shortened sleep duration: A worrying issue

Dr Gunnhild Johnsen Hjetland, lead author of the study, said it's not what you're doing on your phone that's worrying, but how much time you spend looking at the screen while lying in bed.

“We did not find a significant difference between social media use and other device activities. It was screen time that was the key factor in disrupting sleep, possibly by altering circadian rhythms and sleep timing,” explains Gunnhild Johnsen Hjetland.

Sleep is vital for mental and physical health, but there is a global trend toward less sleep, and device use before bed is partly to blame.

Researchers point to a number of ways that devices can interfere with sleep: constant notifications interrupt rest, blue light from screens prolongs alertness, and staring at our phones makes us go to bed later. All of these contribute to disrupting our body’s natural circadian clock.

Notably, this study not only focused on students but also extended to young adults, adding to the growing body of evidence about the profound impact of device use on sleep.

“Sleep disorders are becoming more common among young people and have a significant impact on mental health, academic performance and overall quality of life,” Hjetland warns.

Screens and sleep: It's not just about social media

In the study, participants were asked to self-report their screen use habits while in bed, including activities such as watching videos, playing games, surfing social media, accessing the Internet, listening to music, and reading study materials.

Based on their responses, they were divided into three groups: those who only used social media, those who didn’t use social media at all, and those who did a variety of activities (including social media) before bed. Regardless of which group they were in, the more they used their devices, the worse their sleep quality became.

This is a surprising finding. It suggests that sleep loss isn’t necessarily caused by stimulating content, but rather by screens replacing precious rest time. In other words, simply staring at a screen for too long, no matter what you’re doing, is enough to impair sleep.

However, the researchers also noted that the results reflect the cultural context of Norway, and that more research is needed in other countries and cultures to determine the generalizability of the problem. At the same time, they emphasized that correlation does not mean causation.

What about the solution? “If you’re having trouble sleeping and suspect your phone is the cause, try cutting back on your device time in bed, ideally stopping completely 30 to 60 minutes before bedtime,” Dr. Hjetland advises.

However, she also admits that "breaking up" with the phone is not easy. "If you must use it, at least turn off notifications to limit interruptions at night," Hjetland suggests.

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The habit of surfing the phone in bed increases the risk of insomnia by 59%
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