Short answer: Social media isn't harmful or harmless in itself; it depends on how much, what, and how it's used. Research links heavy use with more symptoms of depression and anxiety, particularly in girls, partly through poor sleep, online harassment and body image. Most platforms set a minimum age of 13. If your child uses social media, set up privacy together, keep phones out of bedrooms at night, agree what to do when something goes wrong — and promise not to take the phone away if they tell you.
The conversation is rarely about screen time itself. It's about what happens in that time: comparing, chasing likes, and sometimes contact with people your child doesn't really know.
What the research says
In 2023, the US Surgeon General issued an advisory noting that up to 95% of 13- to 17-year-olds use social media, and that young people who spend more than three hours a day on it face double the risk of symptoms of depression and anxiety. A large UK study of 14-year-olds found that more time on social media was linked to more depressive symptoms, with a stronger link in girls. Online harassment, poor sleep, low self-esteem and poor body image all appeared to play a part.
That doesn't mean every child who uses social media will struggle. Many find connection, creativity and support online. But it does mean the details matter.
Where the risks are
Comparison
A feed is made of other people's highlights. At an age when self-image is still forming, that can be a harsh comparison.
Algorithms
Recommendation systems are designed to hold attention. Watch one video about dieting and many more may follow. That isn't chance; it's how the apps are built.
Contact with strangers
Group chats, game chats and direct messages can bring contact with people your child doesn't know. Children are often not naive, but they are polite — and that can be exploited.
What can't be undone
A photo sent “just for a second” can be screenshotted and shared. Understanding that sending is permanent matters more than any setting.
The question isn't whether your child uses social media, but whether they know what to do when something goes wrong — and whether they'll come to you.
What to agree together
- Private account, set up together.
- Location sharing off, including in games.
- Only accept people you know in real life.
- Phones sleep outside the bedroom.
- Notifications off for most apps, to reduce the constant pull.
- If something upsetting happens: screenshot, don't reply, block, report, and tell an adult.
The promise that matters most
“If something bad happens online, I won't take your phone away for telling me.” Children often stay silent out of fear of losing access — and silence is exactly what you want to avoid.
Stay curious, not just in control
Total control rarely lasts; children find ways round it. Staying interested works better: “Show me what you find funny.” “Who do you follow?” Look at things together and ask: “Do you think that's real, or edited?” Media literacy grows from conversations, not just bans. Model it yourself, too: the Surgeon General's advice includes parents looking at their own social media habits.
Signs to watch for
- Sleeping badly or seeming exhausted.
- Withdrawing from friends, family or activities.
- Mood changes after using their phone.
- Secrecy, or quickly hiding the screen.
- Changes in eating or talk about their body.
Talk about it without blame. If you're worried about your child's mood, safety or eating, contact their school or your GP. If your child is in immediate danger, call 999 (UK), 911 (US) or 112 (EU).
Related reading
A screen plan for your family: Screen Time and Your Child (PDF, English, ages 2–12) helps you find a healthy screen balance that works for your family.
Sources
- U.S. Surgeon General — Social media and youth mental health (advisory, 2023).
- Kelly Y, Zilanawala A, Booker C, Sacker A. Social media use and adolescent mental health: findings from the UK Millennium Cohort Study. EClinicalMedicine. 2018;6:59–68. doi:10.1016/j.eclinm.2018.12.005.
- Ofcom — Children's media habits.
- YoungMinds — Support for parents.
Written by the Bloom Guides editorial team. Last updated: 20 October 2026. General information only.