People have personal choice of what they eat and how much they want to eat. If they don’t want fatty or salty food? Cook at home or find meals/restaurants suite them. Eat a bit too much? Go to the gym. Walk around the block.
The problem that I have with these kind of laws (i.e the happy meal’s toys ban in San Francisco) is that they keep re-enforcing people that it’s not their fault for the choices that they’ve made.