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Just needs a health warning label, like on alcohol or cigarettes. Then onto the high sugar products, and a quarter of the grocery store

If we want to compare it to alcohol/cigarettes, then kids shouldn't be allowed to use this either.

and the government should tax it accordingly

I don't think that you can practically expect to tax speech.

You can tax reach though.

We have health warnings for food that contains lots of sugar, fat and/or sodium in Canada