More expensive food is making us fatter?

Holding down food costs is making us fat - MarketWatch: "As the unemployment rate inches toward 10% and consumers find themselves increasingly strapped, they are turning to cheap but effective means to fill their families' tummies. And those who do have jobs are working longer hours, forgoing exercise and searching for foods that are not only economical but convenient. As a result, more consumers are turning to processed foods, either already prepared, frozen or canned and typically filled with fat-generating calories, refined grains and sugars. That's making more Americans chubbier and prone to obesity-related illnesses such as diabetes in what has been dubbed "recession fat."

Comment -- Two reasons this report tastes a little off to me. First of all, we just went through about 15 years of prosperity when consumers could presumably easily afford all kinds of healthy food, but average weights still went up. Secondly, for years "cheap" food has been blamed for contributing to obesity. Now, the high cost of food is being blamed for obesity?