Car culture can play in to diet as well. When I was driving to and from work each day, the most tempting options by far were McDonalds and KFC because they had drive thrus which saved time on my way home when my brain was feeling fried.

Then I moved to the middle of the city and I have no commute and many options for food available which are healthier. Since I no longer use a car, these fast food places are less temping.