There's a shocker for ya. 

Let me be the first to say....."DUH!". 😛"We found that U.S. adults living in sprawling counties weigh more, are more likely to be obese and are more likely to suffer from high blood pressure than are their counterparts in compact counties," Reid Ewing of the National Center for Smart Growth at the University of Maryland told reporters.
He said two-thirds of the U.S. population lives in counties covered in his group's survey.
Unlike people in old-fashioned urban centers who can walk to work, shops, and public transport, those in the spread-out communities cannot walk even if they wanted to because sidewalks and crossings are lacking and homes, schools and workplaces are far apart.
"For some people it is a 'duh' kind of issue, but it doesn't seem to be for a lot of people in important positions," Ewing said.