Commentary: Fixing America's food deserts alone won't fix our terrible diets

You are what you eat. It's an expression with roots in the early 1800s that has come to mean if you consume what's good for you, you will be healthy, and if you don't, well, watch out. But our latest research on what influences consumers to make unhealthy food choices has compelled us to turn that axiom on its head: You eat what you are.

In other words, your personal characteristics may be more important to your diet than