An article in the Journal of Clinical Nutrition
offers a different view of what drives obesity. More supermarkets in low income neighborhoods may not be the answer if healthier foods are expensive. The make a strong case that the obesity epidemic has its roots in economics and that healthy eating/active living options may be an elitist approach to public health. Elitist---pretty strong language.
An abstract and the full article can be read by clicking on the link.
A more recent article was published in 2009; however, only the abstract is available free of cost.