After Peru started putting warning labels on super-sweet drinks, companies changed their recipes to use less sugar and more artificial sweeteners, so fewer drinks now need the warning label.

After Peru started putting warning labels on unhealthy foods, fewer of the most popular foods ended up with those labels—especially ones saying they’re high in sugar or have bad fats, because companies changed their recipes to avoid the warnings.

After Peru started putting warning labels on sugary drinks, companies changed their recipes to put less sugar and more artificial sweeteners in their drinks, so fewer drinks now had enough sugar to need a warning label.

After Mexico put warning labels on sugary drinks, companies changed their recipes to make the drinks just under the sugar and calorie limits—so they wouldn’t get the scary label—and this happened mostly to drinks that were barely over the limit before.

Even after Peru put warning labels on unhealthy foods, the amount of salt in the most popular snacks and drinks didn’t really change—and most of them weren’t even super salty to begin with.

Mexico put warning labels on dairy products that have artificial sweeteners, and as a result, companies started using way fewer of those sweeteners—down by almost a third. Meanwhile, Chile and Peru didn’t warn about sweeteners, and they actually started using more. So, it looks like warning people about artificial sweeteners might push companies to stop putting them in food.