Obesity is a cultural problem and requires a cultural solution we have the knowledge and means to administer. That we fail to apply those means bespeaks our ambivalence at best, our profit-driven hypocrisies at worst.
When I was growing up, you couldn't get me to stay inside for anything. Now I come home and there isn't one single kid outside. They're heavier, and not as healthy or happy, and it's pretty clear to me why. These kids need to get up and move. Now.