When high-calorie, nutrition-poor foods like Pop-Tarts, Doritos and soda were expensive, the shoppers purchased far fewer calories overall.

FORBES: Cheap Foods That Are Good For You

In Europe, the legislation specifies that not all foods may be permitted to carry health claims, and the intention is that foods of poor nutritional quality would not be eligible.

ECONOMIST: The way health claims about food are regulated is changing

These payments could be financed by taxing harmful foods, like sugary beverages, highly caloric, processed snack foods and nutritionally poor options at fast food and other restaurants.

WSJ: Best of the Web Today: The Other Obesity Problem

We know there are ways to wean people off high energy foods and to convert poor eating habits but we need to avoid any sense of social engineering in case we get this wrong.

FORBES: Winning in the World of On-Demand Innovation: America and The Open Innovation Market

But what is available to poor people is often the least healthy foods, the high-corn, high-soy foods that we've made cheap through monoculture.

NPR: Child Hunger: Nutritious Food Tough To Afford

These days British prisoners have access to a far wider range of foods but nevertheless often make poor choices and consume diets that are far from ideal.

ECONOMIST: Diet and behaviour

If trans-fatty foods getting into the clutches of the poor were our only concern this holiday season, we could still enjoy our eggnog and rum.

FORBES: The Government That Stole Christmas

In these neighborhoods, grocery stores and fresh produce stands are characteristically absent, and poor households must rely on cheap, high calorie foods to stave off hunger.

FORBES: An Innovative Partnership Takes on Hunger and Obesity

Food majors like Brasil Foods (BRFS) are hurting because of exports and continually gets re-rated on poor performance.

FORBES: Even In Slow Economy, Brazilians Can't Escape Rising Prices