This article covers recent research in The Journal of the American Medical Association suggesting
that among the bad decisions we can make to maintain our weight is exactly what the government and medical organizations like the American Heart Association have been telling us to do: eat low-fat, carbohydrate-rich diets, even if those diets include whole grains and fruits and vegetables.
I guess it’s back to the lion and rabbit diet … Another factor to consider, as TLMW points out, is that gut flora can be associated with obesity which may offer ways to help control food intake.