Restrict Fast Food?

Should all fast food advertising be banned from tv?Should fat, salt and sugar be removed from food?
Too much salt, sugar and fat in food is bad for us.But the problem is that we are still eating too much of food that we know is bad for us.  Fast food is cheap. It is far seen as being far cheaper to feed a family from a fast-food restaurant than it is to go to the market or supermarket. Fast food is designed to be tasty but it is really high in salt, fat and sugar. Image Link