You are talking about a very complex situation, in which a lot of different forces are acting on individuals and their capacity to make rational choices.
Some of the points about the way our built environment is set up are true. You look at the way video games have addictive components built into them. There is some material out there now about how video game designers are deliberately making them addictive to kids. You look at the prevalence of fast-food advertising to children on Saturday mornings and at how they use that to lobby their parents to purchase. You're talking about so many different dimensions of this that to tackle it in a systematic way would be quite complex.
We're talking about trying to deal with some of the issues in the school system. I think it's the one place that.... Healthy eating would be another one. There is no silver bullet with which to tackle this immediately.