The message arrived late, a blue glow in a darkened bedroom. A friend had reached out on social media about something they could not bring themselves to say to a parent. For the teenager on the receiving end, the platform was not a distraction but a lifeline — a space where confessions too raw for the family dinner table could be typed, sent, and held. “I have had friends reach out to me on social media about things they aren’t comfortable talking to family members about, and I have done the same,” one teenage contributor to a recent analysis in the British Medical Journal recalled. “Without social media, what could we have done?”

That question now hangs over a wave of legislative experiments sweeping across continents. Australia became the first country to ban under-16s from social media entirely in late 2025, and within months Malaysia followed. South Korea’s media commission is weighing a prohibition for children under 14, while proposing design changes to make platforms less compulsive for older teens. The European Union intends to table a bloc-wide bill by September, and the United Kingdom is layering a voluntary overnight curfew for 16- and 17-year-olds onto an incoming under-16 ban. Yet on the ground, the bans are proving porous. Australian research found that two-thirds of adolescents continue using the prohibited platforms, slipping past age gates with a parent’s login, a falsified birth date, or a VPN. In a UK pilot programme involving more than 300 teenagers and parents, a default six-hour nighttime pause did reduce scrolling and improved sleep — but critics note that the setting can be switched off with a single tap.

Viewed from the research community, the rush to legislate is outpacing an understanding of the trade-offs. Scientists writing in the BMJ caution that a complete ban may simply drive young people into more private, encrypted, or entirely unregulated spaces, while giving technology companies an incentive to adapt in ways that mirror the tobacco and alcohol industries — lobbying to redefine what counts as “social media,” investing in less scrutinised platforms, and shaping public messaging. The concern is not abstract. A separate analysis by the Centre of Expertise on Child Sexual Abuse in England and Wales estimates that one in six children now experiences sexual abuse before the age of 18, with police reporting that over 40 per cent of such offences carry an online element. Researchers warn that the true scale of online-facilitated abuse is becoming “hidden” precisely because the landscape is shifting so fast, and because professionals often miss the signs: child needs assessments naming sexual abuse fell to a decade low in 2024-25, even as prevalence estimates rose.

For adolescents themselves, the platforms are not monolithic. The same BMJ analysis, co-authored with a young person, describes social media as “a place where friendships are made, where people can find communities, express themselves, learn new things, and sometimes a place to escape difficult situations.” England’s children’s commissioner, Rachel de Souza, has called the UK’s voluntary curfew a positive step because young people “want to reduce their use of social media but find it difficult.” Yet the opposition Conservative Party dismissed the measure as meaningless if teenagers can simply toggle it off, while the National Society for the Prevention of Cruelty to Children judged that it would help but would not be sufficient on its own. In South Korea, the debate is framed around design interventions — altering algorithms and interfaces for 14- to 19-year-olds — rather than outright prohibition, a tacit acknowledgment that access and harm are not the same thing.

In bedrooms from Sydney to Seoul, the screens stay on past midnight, the default settings switched off, the conversations continuing in spaces no regulator has yet mapped. The friend who cannot speak at the dinner table still types, and someone still answers.