I want to add that for the most part the two biggest 'obesity' problems in countries is the US and Canada. This is partly because of 1) our lack of activity and 2) the 'may I super size that for you.' Look at rich food countries such as Italy or France or at simple carb high society such as the Asian countries. For the most part those countries do not have the obesity problems we do. It is not the food's fault but the indivdiual AND societies fault.
Food provides nutrition even a fast food hamburger provides it. It is the SOCIETY's fault not the restaurant's fault. We want more for our money when we purchase anything be it food or material goods. We work hard for our money want want to get the biggest bang out of the buck...restaurants know that thus they market it that way. To get the restaurant advertising to change society needs to change.
I don't mean to argue or try to force my opinion but much of what is here or the way perceived by me is that we want to place the blame on the food industry when in fact it should be placed on the society.
To me (again just my opinion) is the individual needs to be aware and unless you've been living under a rock or in a cave for the past several decades you know that you just cannot have the supersized meals or junk as the majority of your diet to be healthy.
Again not trying to force my views or opinions just voicing them.