Suburban Sprawl = Waistline Sprawl

BBC NEWS | Health | Urban sprawl piles on the pounds

It may be possible to predict the average weight of people in a particular district - simply by looking at an aerial photo.

US scientists have suggested that people who live in a "sprawling" district - where shops and services are widely spaced - tend to weigh more

Indeed. And it's not exactly rocket science to explain, either. When I hear people say things like "Walking is not a means of transportation" and mean it, it's hardly surprising to me that they become roughly spherical in shape.