The topic has been on everyone's lips for years, but 2026 marks a turning point. The Revue du Praticien has just highlighted a JAMA Network Open study whose results are striking: one week without social media is enough to significantly reduce anxiety, depression and sleep disturbances in young adults.[1] Meanwhile, France adopted a law banning social media for under-15s in January 2026.[2]
Conducted between March 2024 and March 2025 in the US with 373 participants aged 18 to 24, this prospective cohort study is one of the most rigorous on the subject. The protocol: one full week of social media disconnection, with before/after measurements of anxiety, depression and insomnia symptoms.[1]
Effects are particularly pronounced in participants with the highest depression levels at baseline — suggesting that disconnection could be a complementary therapeutic intervention in its own right, not merely digital hygiene.
One week. That is all it took to measure significant improvements in mental health — without medication, without consultation, without cost. This does not make social media intrinsically harmful, but it clearly indicates that excessive use carries a measurable and reversible psychological cost.
On 26 January 2026, the French National Assembly adopted a law banning social media for under-15s.[2] Implementation is planned for September 2026. Platforms will have to verify user age and obtain parental consent.
This law is ambitious. But its implementation raises serious questions: online age verification is technically difficult and circumventable; adolescents may migrate to unregulated platforms; digital media education is at least as important as restriction. Similar measures in the UK and Australia show mixed results.
A British longitudinal review of over 3,200 young people (UK Household Survey) shows that the effect on mental health is mediated by self-esteem, and that active use (posting, commenting, interacting) is less harmful than passive use (scrolling, comparing).[4]
The goal is therefore not to eliminate social media — which also provides real social connection spaces — but to develop conscious, limited use.
See also our articles on consumer health AI and its limits and physician burnout in Switzerland.
Does one week without social media really improve mental health?
This is what the JAMA Network Open study (2025) shows in 373 young adults aged 18–24: one week of 'detox' significantly reduces anxiety symptoms (−16.1%), depression (−24.8%) and insomnia (−14.5%). Effects are most pronounced in participants with more severe depression at baseline.
Which social media platform is most harmful to mental health?
Research does not clearly single out one platform. Studies emphasise the type of use (passive vs active, social comparison, exposure to negative comments) rather than the platform itself. Total usage time and quality of exposure are the key factors.
Is France's ban on social media for under-15s effective?
The law adopted by the French National Assembly in January 2026 is ambitious but its technical implementation poses considerable challenges. Most experts agree that digital media education is as important as restriction, if not more so.
How should I raise the topic of social media with an adolescent patient?
Paediatric society recommendations (SGKJPP, AAP) suggest integrating screen use questions into routine history-taking. Useful questions: 'How much time do you spend on social media each day?', 'Do you compare yourself to others online?' A non-judgmental approach is essential — teenagers fear having their devices taken away if they are honest.
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