Now, what are we doing?
* Getting people to stop consuming sugary drinks and other very unhealthy items (maybe that would require drugs at this point)?
* Or offer people drugs so this side-effect of an unhealthy diet can be avoided?
If we're offer a way to continue a bad diet without this effect, it seems very likely further bad effects will appear X many years from now from a combination of the drugs and the bad diet. Because virtually all drugs taken forever accumulate side-effects over since the body did evolve to process them (these drugs may indeed be needed at times but the point remains).
Anyway, 'getting people to stop' turns out to be impossible for some. The drugs are meant to help with that.
Diet soda and bottled water exist and somehow people still keep choosing sugary drinks. In fact people often have a ready excuse for why they consider diet soda more unhealthy!
At the end of the day, or maybe week, or possible even month you have to eat or you're going to die. Simply put you require caloric intake to survive. Yea, you can ban coke and candybars, and hell that's a good idea. But what about bread? Or do you monitor and watch to make sure everyone only eats two slices? Make sure foods at restaurants only have so many calories per serving and ensure they people can only buy one meal per meal?
At some point it still falls apart because it is human nature to massively overconsume since the vast majority of history we've been calorie short. You're dealing with an animal response here that is going to be very difficult to override to the under/normal consumption side.
Sugar consumption is going down and it doesn't seem to have any impact.
Calorie equated studies show no difference between low fat or low carb diets.
It all boils down to excess calories.
Regressive taxes also don't work well. I don't always eat super healthy. Making unhealthy food cost more wouldn't have any measurable impact, except maybe tanking my 401k because half the Fortune 500 goes out of business.
People complained about cigarette taxes wouldn’t be effective but they are.
The stock market didn’t crash either despite the multibillion dollar tobacco companies being affected.
Hell I'd be ok with banning all forms of food advertising and requiring that all foods be blank packages with nothing but the ingredients, nutrition facts, and a short description of how they were prepared. I'd prefer that world on general principle. But I don't think it would fix the obesity epidemic.