Would you say there was a hi percentage of fast food outlets in your area ?
I know of a place in the south where there are s**t loads of independent fast food joints and the locals are mostly obese (this is not my personal view, it was reported in the national news from medical statistics). It's easy to say that the food outlets have created "fed" the issue, but the people are wanting the products.
A fair percentage of the people both old and young here in this rural village are fat, we have only just got a chip shop. So that does not seem to stack that well with a high level of fast food places.