Australian lawmakers on Thursday approved a landmark ban on social media for children under 16, in some of the world’s toughest such controls.

The ban, which aims to address the impact of excessive social media use on children’s physical and mental health, affects social media platforms including X, Facebook, Instagram, TikTok, Snapchat and Reddit, but not YouTube.

The platforms, which bear sole responsibility for enforcement, have one year to figure out how to implement the age limit,…