Countries including France and Britain are considering following Australia’s lead by banning children and some teenagers from using social media, but experts are still locked in a debate over the effectiveness of the move.Supporters of a ban warn that action needs to be taken to tackle deteriorating mental health among young people, but others say the evidence is inconclusive and want a more nuanced approach.For all the latest headlines, follow our Google News channel online or via the app.Australia last month became the first nation to prohibit people under-16s from using immensely popular and profitable social media platforms such as Instagram, Facebook, Tiktok and YouTube.France is currently debating bills for a similar ban for under-15s, including one championed by President Emmanuel Macron.The Guardian reported last week that Jonathan Haidt, an American psychologist and supporter of the Australian ban, had been asked to speak to UK government officials.Haidt argued in his