Well, check it out... the real issue is that most people (let's keep it at Americans though for these purposes) have no knowledge of proper diet/nutrition until it's already too late. The average person doesn't even think about getting into shape until they're already WELL out of shape... you can't spend the first thirty years of your life abusing your body with shyt foods and then expect to have 6% body fat after three months of exercise. And it's just going to get worse generation after generation, with all of this genetically modified steroid filled foods we have. American children aren't even given a good chance at good health because they're fed bullshyt from the womb, and it's all to line the pockets of the rich so they can get richer.
And I will say this much, everyone laments on the child obesity problem in America, but people keep talking about "It's 'cause the kids do this and don't do this, back in my generation, blah, blah, blah"... if a child is obese, it's not the child's fault.