It's not just calories that make something healthy/unhealthy. McDonald's food typically has high amounts of sugar and fat (hell, even the milk there is sugared to hell), which lead to health complications like diabetes (which has had a surge in child patients over the years). Couple that with the typical American high protein/carb diet, dangerous meat/produce, and the typically unhealthy school meals (eaten five times a week), and we're really just piling more and more crap onto a young childrens' bodies that all need a good balance of proper nutrients in order to develop in a healthy way. This also becomes a drain on health insurance when we have to send big, sick people to the hospital regularly because they can't be bothered to choke down a salad once in a while.

As far as the Happy Meal goes, it's not going to do much, and it's kind of asinine. If a kid is eating crap like that regularly enough that it's harmful, then we may as well just take the kid away from the family, since they obviously either can't care for the child, or don't give a shit about its health.

When it comes down to it, the ideal solution really is about personal responsibility, but the typical American attitude these days is "fuck it, I only care about me," which leads to our obesity epidemics, and lack of public funding for good meals in schools and dietary education, and the continued use of poisons in our food (mercury in fish/hormones in meat). I really don't trust people to suddenly take personal responsibility in our lazy culture, so I'm fine with the government mandating food, but it can't be knee-jerk reactions to a documentary focused one business. If anything, we should be looking to reform broader things like the use of trans-fats, HFCS, hormones, clean tapwater, pollution, etc. instead of just telling one particular business that they can't serve one item on their list.