The September issue of the American Journal of Preventive Medicine says the average man weighed 10 pounds less if he lived in older, more walkable neighborhoods while women weighed about six pounds less.
Modern neighborhoods, on the other hand, generally consist of large areas with nothing but housing, an arrangement that hinders walking and forces people to drive more to get around.
http://www.msnbc.msn.com/id/25890997/
How much walking do you do in your neighborhood? Is it newer? Older? Does what researchers say mirror your experiences?