A monthlong experiment restricting teenagers’ social media use found that an overnight curfew offered the best balance between improving their well-being and allowing them to stay connected with friends.
More than 300 teenagers and parents from across the U.K. participated in the trial, which tested three different interventions. Some teenagers were limited to 15 minutes of social media use each day, others were blocked from accessing apps between 9 p.m. and 7 a.m., and a third group removed selected platforms entirely.
Participants reported benefits including improved mood, lower stress, greater energy during the day, better sleep and increased concentration. At the same time, the teenagers described a “social and emotional trade-off,” as social media remained an important way to communicate with friends who were not subject to the same restrictions.
The overnight curfew ultimately emerged as the most popular option, with participants viewing it as less socially disruptive than sharply limiting daily use or deleting apps altogether.
The findings are now informing a new set of online safety measures proposed by the U.K. government Wednesday for 16- and 17-year-olds.
Under the proposal, social media accounts belonging to older teenagers would come with an overnight curfew enabled by default beginning at midnight. The restriction would remain in place until 6 a.m., making platforms including Instagram, TikTok and YouTube unavailable through the affected accounts during those hours unless users changed their settings. Features intended to encourage prolonged use, including autoplay and infinite scrolling, would also be automatically disabled.
Teenagers would still be allowed to turn off or adjust those default settings. The measures are expected to come into force by spring 2027.
Technology Secretary Liz Kendall said the changes would be “crucial in helping young people get the sleep they need, focus on school and college, and spend more quality time with family and friends, all of which are fundamental to building a happy, healthy and fulfilling adult life.”
Online Safety Minister Kanishka Narayan similarly defended the proposals, arguing that the curfew and restrictions on autoplay would make Britain “the most robust place in the world when it comes to regulating” technology companies.
The proposal is part of a broader international effort to place tighter limits on children’s access to social media as technology companies face increasing scrutiny over the safety and potentially addictive design of their platforms.
It also joins an increasingly complicated collection of online safety measures already available to families, including optional parental controls on children’s devices and child-focused versions of major services such as YouTube.
“There have been concerns about the way services keep children and young people engaged on their phones for long periods, and that this can impact their sleep, amongst other effects,” Lorna Woods, a professor of internet law at the University of Essex, told the BBC.
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In June, outgoing U.K. Prime Minister Keir Starmer announced plans for a more sweeping restriction: a blanket social media ban for children under 16. The ban would cover major services including TikTok, Snapchat, Instagram, Facebook, YouTube and X.
The U.K. announcement followed Australia’s move in December to become the first country in the world to enforce a legal social media ban for users under 16.
The government plans to present its latest proposals to Parliament by the end of 2026, to implement them alongside the under-16 ban the following spring.
It also announced plans for additional safeguards governing children’s use of artificial intelligence chatbots, including requirements for providers to introduce regular breaks for users under 18.
European Union officials are also advancing restrictions aimed at younger users. European Commission President Ursula von der Leyen said Monday that the region would move forward with age limits for social media platforms to reduce use among children and teenagers.
Technology companies, meanwhile, have defended the safeguards already built into their platforms. Ali Law, TikTok’s director of public policy and government affairs in Northern Europe, said during a Tuesday appearance with CNBC that the app was designed with the safety of younger users in mind.
According to Law, TikTok has more than 50 preset protections for users under 16. Those measures include a one-hour daily screen-time limit and a full-screen prompt appearing at 10 p.m. that encourages teenagers to stop using the app and take a break.
“All of these are little default aspects, little nudges to make sure that people have a balanced and healthy relationship with our app, because that works in our interests…because if people are using it for too much and are burnt out, they’re not going to get value from it.”
Other technology companies have argued that responsibility for verifying users’ ages should not rest solely with individual platforms. Meta, which owns Facebook, Instagram and WhatsApp, has previously called for age verification to be handled by device manufacturers.
Apple has since introduced device-level age checks that ask people using iPhones and iPads with the latest operating software to verify their ages.
Baroness Beeban Kidron, a longtime advocate for device-level safety and age-verification measures, criticized the government for focusing too heavily on restricting children’s access rather than changing the products themselves. She said the objective should not be “banning children from tech” but “banning tech from putting toxic products in the hands of children.”
The ability of teenagers to disable the proposed protections has drawn criticism from campaigners, opposition politicians and online safety experts who question whether the default settings will have a meaningful effect.
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Ellen Roome, who believes her 14-year-old son, Jools Sweeney, died in 2022 after participating in a dangerous online challenge, argued that an optional restriction would be too easy for teenagers to circumvent.
“I just think it’s not good enough really just to have a product you can switch off, it’s a bit like offering a 17-year-old a bottle of alcohol and then moving it slightly out of arm’s reach, they can just drag it back in. I really wish they could go stronger and harder on these things.”
Andy Burrows, chief executive of the Molly Rose Foundation, welcomed the attention given to older teenagers but said the announcement remained too narrow.
“While we welcome these measures for older teens, this latest move is yet another piecemeal set of announcements, not the comprehensive plan for children’s safety that’s required,” Burrows said.
Some experts have also warned that a blanket nighttime restriction could unintentionally cut vulnerable teenagers off from support. Sonia Livingstone, a professor specializing in children’s digital rights at the London School of Economics, said a distinction should be made between curbing disruptive platform features and completely blocking access.
“If it’s a curfew on companies using push notifications to wake someone up in the night, absolutely have a curfew,” Livingstone told the BBC.
“But if it’s a curfew that prevents a child in need of support or help or comfort reaching out to trusted sources in the middle of the night, I think that’s quite harmful potentially.”
Dame Rachel de Souza, the children’s commissioner for England, said young people generally oppose outright bans but support protections from features that encourage compulsive use.
“We have to listen to young people. They don’t want a ban, but they do want to be protected from addictive, infinite scrolling,” she said.
De Souza added that she wanted more details on how the curfew would be enforced and said she would press the communications regulator, Ofcom, to fully exercise its authority over online safety.
Social media analyst Matt Navarra dismissed the proposal as “not a curfew,” but a “mildly annoying settings prompt with a government press release attached.”
“The UK Government is calling this ‘world-leading’ online safety, but with no VPN restrictions, it’s leaving the side door open and putting up a sign asking teens not to use it,” Navarra said.
The government does not currently plan to restrict virtual private networks, which can disguise a user’s location and have previously been used to evade online controls, including Australia’s social media restrictions. Officials said VPNs remain important to whistleblowers, minority communities and families seeking privacy.
Government-commissioned research also found little evidence that large numbers of children were using VPNs to bypass age-verification systems.
“We have decided not to limit VPNs today, and that’s the primary conclusion for now, but it is something we will continue to review,” Narayan said.
Moumita Basuroychowdhury is a Contributing Reporter at The National Digest. After earning an economics degree at Cornell University, she moved to NYC to pursue her MFA in creative writing. She enjoys reporting on science, business and culture news. You can reach her at moumita.b@thenationaldigest.com.