What the new social media curfew means for girls

From next spring, anyone under 16 in the UK will be locked out of Instagram, TikTok, Snapchat, YouTube, Facebook and X. From this month, 16 and 17 year olds face a default overnight curfew on the same platforms, midnight to 6am, with autoplay and personalised feeds switched off unless they opt back in (HM Government, 2026). The policy is framed as protecting children in general. The evidence behind it points somewhere more specific: teenage girls.

What the rules actually change

The government set out the detail in a fact sheet first published in June and updated in July 2026. Under 16s will lose access to the major social platforms entirely once the regulations take effect, expected in spring 2027, though messaging services such as WhatsApp are unaffected. High-risk features, including livestreaming and contact from strangers, are being restricted for this age group across other online services too. For 16 and 17 year olds, the approach is softer: a default curfew between midnight and 6am, notifications and autoplay switched off, and personalised feeds disabled unless a teenager actively turns them back on (HM Government, 2026). Nothing requires parents or children to do anything yet. The regulations still have to pass through Parliament.

Why the evidence keeps pointing at girls

The strongest UK evidence on this comes from the Millennium Cohort Study, which followed almost 11,000 14 year olds. Girls were more than twice as likely as boys to be heavy social media users, with 43.1% spending three or more hours a day online compared with 21.9% of boys. At that level of use, girls showed a 26% increase in depressive symptoms against 21% for boys. Among those using social media for five hours a day or more, the gap widened further: a 50% increase in depressive symptoms for girls compared with 35% for boys (Kelly et al., 2019). The direction of the finding is not new. The size of the gap is what deserves attention.

The mechanism is the same, the exposure isn't

The same study examined what actually links heavy use to low mood: online harassment, disrupted sleep, low self-esteem, and dissatisfaction with body image. None of these pathways worked differently for girls than for boys once a young person was exposed to them (Kelly et al., 2019). What differed was exposure itself: girls simply spent more time in the environments where these pressures operate. Separate research from the Royal Society for Public Health surveyed almost 1,500 14 to 24 year olds and asked them to rate each major platform's effect on their own wellbeing. Instagram came out worst, driven largely by young women comparing themselves against curated, filtered images of other people's lives (Royal Society for Public Health & Young Health Movement, 2017).

What a curfew doesn't touch

An overnight curfew addresses one variable: hours of unsupervised night-time access. It does not touch the comparison, the harassment, or the appearance pressure that happens at 4pm on a school day. A teenager who feels worse about her body after twenty minutes on Instagram after school will not be helped by losing access to the same app at 1am. The policy is worth having. Reduced exposure is protective. But it is not a substitute for someone paying attention to what a specific young person's social media use is actually doing to her on an ordinary afternoon, not just after midnight.

What to watch for at home

The signals worth acting on are not screen time totals. They are changes in mood that track with use: a daughter who is flat, irritable or tearful specifically after coming off her phone, who has started talking about her appearance in ways she did not before, whose sleep has moved later and become lighter, or who has gone quiet about what she is actually looking at, rather than open about it as she once was. None of these need to reach crisis point before they are worth a conversation. If a pattern like this has been going on for more than a few weeks and is not shifting, that is a reasonable moment to ask for help rather than wait for the next policy change to fix it.

Blip is a specialist mental health service for children and young people aged 7 to 25. If you are noticing a pattern like this in your daughter or son and it is not improving, our care team can help you work out whether what you are seeing needs a proper assessment or just a different conversation at home. Get in touch to find out more.