In a landmark decision that has stirred global debate, Australia is set to become the first country in the world to formally restrict social media access for teenagers, with the new law taking effect from midnight on Wednesday, December 10.

Under the ban, popular platforms including Instagram, TikTok, and YouTube will be required to block access for users under the age of 16, impacting more than one million young Australians.

From 1300 GMT, at least ten major social media companies must comply with the new regulation or face heavy penalties of up to A$49.5 million (£26 million).

While the move has drawn criticism from major technology firms and free-speech advocates, it has also received strong support from parents, educators, and child-welfare groups who see it as a much-needed step toward protecting young minds.

The decision follows years of concern over the growing influence of social media on children’s mental health and well-being.

Governments worldwide have watched closely as evidence mounted, particularly after revelations that Meta was aware of links between its platforms and rising body image issues and suicidal thoughts among teenagers, even as it publicly denied any such connection.

Countries such as Denmark and Malaysia, as well as several U.S. states, are now considering similar measures.

Experts believe Australia’s move could set a powerful international precedent. “While Australia is the first to adopt such restrictions, it is unlikely to be the last,” said Professor Tama Leaver of Curtin University.

To closely study the impact of this ban, Australia’s eSafety Commissioner has partnered with Stanford University and a group of 11 academics to examine data from thousands of affected young people over the next two years.

Their research aims to understand not only the challenges of enforcement, but also the broader emotional, social, and psychological effects on children growing up in an increasingly digital world.