Social-media use ‘disrupting teen sleep and exercise’

Teenage boy asleep on sofaImage copyright Getty Images
Image caption Maybe he’s checking social media when he should be sleeping in bed…

Using social media isn’t directly harming teenagers – but it can reduce the time they spend on healthy activities, such as sleeping and exercising, a study suggests.

Parents should ban phones from bedrooms after 22:00 and encourage more physical activity, the UK researchers said.

Girls were particularly vulnerable to cyber-bullying on social media, which could lead to psychological distress.

But what drove boys’ distress needed more research, the study said.

In the UK, nine out of 10 teenagers use social media and there is growing concern about its impact on the mental health and the wellbeing of young people.

So far, research has thrown up contradictory evidence because of the lack of long-term data.

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In this study, in The Lancet Child & Adolescent Health, a representative group of more than 12,000 teenagers at school in England was interviewed over three years, from the age of 13 to 16.

What did the study do?

Teenagers in Year 9 were asked how often they checked social-media sites such as Instagram, Facebook, Whatsapp and Twitter each day – but not how long they spent using them.

Most (51%) of the girls and 43% of the boys used social media more than three times times a day, rising to 69% of boys and 75% of girls by Year 11.

When they were in Year 10, the same young people completed a questionnaire on their mental health and were asked about their experiences of cyber-bullying, sleep and physical activity.

In Year 11, the teenagers were asked about their levels of happiness and how anxious and satisfied with life they were.

What did the research find?

The boys and girls who had checked social-media sites more than three times a day had poorer mental health.

These girls were also more likely to say they were less happy and more anxious in later years – but the boys were not.

And this could be because of disrupted sleep, lack of exercise and cyber-bullying, the researchers said.

Should parents worry?

Lead study author Russell Viner, professor in adolescent health at UCL Great Ormond Street Institute of Child Health, said: “Parents get tied up in knots about how much their kids are on social media each day.

“But they should worry about how much physical activity and sleep they’re getting, because social media is displacing other things.”

Social media could have a positive effect on teenagers and “played a central role in our children’s lives”, he added.

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Image caption Get them exercising outdoors instead of worrying about their social media use, researchers say

Also involved in the study, reader in child psychiatry Dr Dasha Nicholls, from Imperial College London, said: “It’s not the amount of social media per se, it’s when it displaces real life contact and activities.

“It’s about getting a balance.”

Is it different for girls?

The research team said there were differences in the way girls and boys used social media that were not yet understood.

And more work was needed to find out what was influencing boys’ psychological distress from using social media.

What about cyber-bullying?

Dr Nicholls said parents should keep an eye on their children’s social-media use and make sure they were not accessing toxic content, particularly at night.

“Cyber-bullying is important – we need to be asking about it and addressing it,” she said.

“In cyber-bullying, even your bed is not a safe place. And if your phone is downstairs, you can’t be bullied in your bed.”

Dr Louise Theodosiou, from the Royal College of Psychiatrists’ child and adolescent faculty, said: “More studies are needed to understand how we can prevent the more negative impacts of social media, particularly on vulnerable children and young people and the negative impacts of digital technology generally.

“It is only right that social-media companies contribute to fund this important research and do more to support young people to use the internet safely.”

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