I know this sounds drastic, but imo we would increase the global health by quite a substantial amount if all drinks except water would be banned. Obviously tea could still be sold in a pure way with no sugar added. I strongly believe the greatest problem we have in modern health society are sugared and alcoholic drinks. If they were all banned it would make the world population more healthy. 10 years ago I quit all alcoholic and sugary drinks and not only did I lose weight without doing any exercise or changing diet apart from that, I also noticed less stomach/headaches and my skin became more smooth and clean.
Even junkfood has some value to the body in terms of minerals/vitamins. Sugary drinks and alcoholic beverages don't have such an impact. So, imo there is no downside to ban those things and nothing of value is lost.