Like Scylla and Charybdis, the twin sea monsters of Greek mythology, diabetes and obesity are the twin medical monsters confronting America's children. Diabetes and obesity have even been featured as the story line in a recent episode of Law & Order, a show well-known for focusing on issues that matter.

We all know some people who get sick all the time. They're just getting over one thing when here comes the next round of illness. We also know people who just seem to be full of energy. Those people never get sick or so it seems. What are the key differences between these North and South Poles of health?