[yupper32]

Banning sugar and caffeine would be tough.

For sugar, what do you actually ban? Added sugar? There's plenty of sugar in fruits, especially when you juice them. How do you enforce this? Seems like a nightmare to figure out.

Caffeine is interesting. It's actually physically addictive. I can't find any studies on long term effects of caffeine in children, though.

And, of course, there's exactly 0 support to do any of that, which can't be ignored. Probably a better use of everyone's time to improve health education.