Ultimately that is the argument against government control over those things. When I sell you a burger, I don't know if you're having one every two months, or two in one day. Are we going to have government tracking what people eat, then going to businesses and telling them "you can't sell any more to that person, they've had enough"? It's food for fuck's sake. It's not cigarettes. It's not recreational drugs. It's not alcohol. At some point you have to exercise personal responsibility, and maintain a healthy body, because it's in your own best interest.