France, June 6 -- From dangerous diet tips to disinformation, cyberbullying to hate speech, the glut of online content harmful to children grows every day. But several European countries have had enough and now want to limit minors' access to social media.

The European Union already has some of the world's most stringent digital rules to rein in Big Tech, with multiple probes ongoing into how platforms protect children - or not.

There are now demands for the EU to go further as a rising body of evidence shows the negative effects of social media on children's mental and physical health.

Backed by France and Spain, Greece has spearheaded a proposal for how the EU should limit children's use of online platforms as fears mount over their ...