Do better, EU!

Entirely ban minors from Internet.

Ban social media!

In all seriousness though, if there's something that by some consensus can considered unhealthy for kids, such as big social media - it's more than likely to be unhealthy for adults too. However simply banning anything often just manufactures people's craving for the "forbidden fruit", so instead of that they could rather fund more educational initiatives to teach people about responsibly and safely surfing the net.