If you make this kind of statement, you must be prepared to drown all opposition in a ****load of statistics that back you. And, for all its comical value, "Supersize ME" proves jack, from a statistical standpoint.
It's false, too. "Junkfood" in controlled amounts and otherwise healthy habits will not make you fat. Your arteries, heart, liver, etc might not be too happy about it, but that's an entirely different issue.
Well duh, of course it is in controlled amounts ok. Problem is in modern era more and more people drift to eating it way too often - and way too often isn't even close to Supersize ME level wackiness.
Other effects you mentioned alone are good reason why there should be campaigns against junkfood.
Obesity didn't start with the onset of Mcfood. It wouldn't end if you removed it, either. Unhealthy eating habits have found a way of materialising in fast food restaurants, but being fat is a choice, 99% of the time.
Nope, it didn't start and I never said that.
Outside world largerly affects how much easier it is to make "wrong" choice in this kind of thing. Using drugs is choice too. It doesn't mean we should let our surroundings to get into state where making "wrong" choice instead of "right" choice is propabilistically higher and higher with each passing year. There are countless ways how our modern western lifestyle, merchandising, brands and all that jazz affects people and lead them to junkfood places they wouldn't otherwise go.
Yes. It's a good exercise at pointing the obvious. A huge surplus of calories + zero activity = fatty. I don't think anyone disputed that?
Yes, some people dispute that. ( See Volourn's "HEALTHY JUNKFOOD" part for quick reference )
And "junkfood companies" have for a long time tried to make bad health effects seem lesser than they are in eyes of media.