And I never blamed my parents, they did what they thought was best, but I dare to suggest that adults constantly telling kids: "you should lose weight" for years doesn't do any good. At worst you start to resent everyone who says that and then you are in deep trouble.
If you have been skinny to normal weight your whole life you have no idea how hard it is to keep up with a diet and how easily it gets out of hand. Kids are the place where we should start treating this epidemic and it doesn't start with nagging them every time they visit a doctor/nurse. It starts with proper school meals which favor salads instead of shit like pasta, rice and potatoes, and removing shit like coke machines from school property. With PE classes where kids actually get exercise and isn't just about playing few rounds of sports ball. And some actual advice with weight problems and proper after school activities (these probably should be sports ball activities) which don't cost a lot.
Maybe I'm way off base here. Maybe I'm just crazy. But I know what my educational system is like and for most part it ain't helping.