> The relationship can also go the other way. Supermarkets
> refuse to locate in poor areas. Poverty causes poor health;
> it also causes bad diets.
Not necessarily. Some of them do, some of them do not - as I've seen it in Baltimore. My guess is that their decision depends on many other factors, such as deals they get from local governments, or even the quality of their top brass - some may be more aversive to risk than others.
Wojtek