Here is a great article about commoditization of food, and the impacts it has on both the overfed and the hungry of the world.
Updated to add a snippet:
"Our choices are not entirely our own because, even in a supermarket, the menu is crafted not by our choices, nor by the seasons, nor where we find ourselves, nor by the full range of apples available, nor by the full spectrum of available nutrition and tastes but by the power of food corporations."
That's my emphasis, by the way, because I think it's the key. Talk about food for thought.