A two-way effect
Social media’s effect on mental health is not one-directional. On the one hand, it can support connecting with friends, finding community around shared interests and self-expression; it can be especially valuable for children who find it hard to find peers like them nearby. On the other hand, it can have a negative effect on anxiety and mood through constant comparison, approval-seeking (likes/followers), disrupted sleep and exposure to negative content.
So the question “is social media good or bad?” is too simple. The better question is: which child, for how long, with what content and in what manner of use? The effect depends largely on these variables.
Why are adolescents more vulnerable?
Adolescence is a period in which identity development, peer approval and social comparison naturally intensify. Social media can magnify these processes: carefully curated, idealised posts can lead to unrealistic comparisons; likes and comments can tie self-worth fragilely to external approval. This creates particularly sensitive ground for body-image problems and anxiety.
In addition, cyberbullying is a real and serious risk of social media; unlike traditional bullying, it can follow a child home and be constantly accessible. So social media use in adolescents should be addressed not just by duration but together with the quality of the experience.
An approach to healthy use
The way to set social media within a healthy frame is open communication and jointly set boundaries, rather than bans and surveillance. Useful principles include: keeping the bedroom and the hour before bed screen-free (to protect sleep); respecting platforms’ age limits; talking with the child about content and the feelings they encounter without judgement; and building early awareness of privacy, the permanence of posts and online safety.
A parent setting an example through their own use is also a powerful factor. The aim is not to cut the child off entirely from the digital world but to teach them to be a user who can think critically, set boundaries and protect themselves in that world. These skills become increasingly important as a child grows older.
When to seek support?
Most children can use social media in a balanced way; but some signs call for closer attention: marked mood changes, withdrawal, disrupted sleep and appetite, detachment from school or interests, intense restlessness when away from screens, or signs of being exposed to cyberbullying. These signs do not constitute a diagnosis on their own but should not be ignored.
In such situations, the first thing to do is to have a calm, non-judgemental conversation with the child. If the signs persist or impair the child’s functioning, it is appropriate to seek support from a child and adolescent mental-health specialist. An early and supportive approach is usually the most effective.