The Washington Post reports that the Obama administration plans to rework food assistance programs so that they focus on nutrition, rather than simply calories. That would be a good move: Families that go hungry are more likely to be obese. That sounds contradictory, but it isn't: In times when they can purchase food, they buy maximum numbers of the cheapest calories. And so you end up with the worst of both world. Malnutrition, which destroys the developmental prospects of the kids, and obesity, which destroys the health prospects of the adults.