The metaphor I routinely use is polar bears in the Sahara desert. You take creatures adapted to the cold and put them in the heat, the very traits that allow them to survive in one environment will conspire against them in the other. We are polar bears in the Sahara with one important distinction: we are smarter than the average bear. Once we identify the nature of the problem, we can think our way out of it. But it begins by acknowledging you didn't fail because you couldn't succeed. Because you didn't even know what the scope of the problem was. It's not your fault.

Color, rather than shape, is more closely related to emotion.

What we need to do now is recognize that it is the sum total of human ingenuity that is responsible for the epidemics of chronic disease. Throughout most of human history, calories were scarce and hard to get, and physical activity unavoidable. Calories are now abundant, and physical activity is hard to get. We took an unstable, uncertain food supply and fixed it. What now passes as exercise and requires specialized footwear used to be called "survival." You had to do it. Now you never have to do it. We solved it too well. Now we don't need our muscles for anything.

We are creatures. We have a link with a native habitat just like every other species. Throughout most of human history, physical activity was unavoidable, calories were scarce and hard to get. In the modern era, calories are unavoidable, physical activity is scare and hard to get. The traits that allowed our ancestors to survive, and let's face it, the survival of our ancestors is the reason that we're here because the people who don't survive and make very crummy ancestors, are our traits. But they're very much at odds with the modern environment.

My view of chronic disease prevention of fighting epidemic obesity and diabetes, of turning the tide, is that it is the job of professionals to pave the way and to cultivate the will; to stir people up so that they understand the stakes, so that they recognize that adult onset diabetes stalking children is a clear and omnipresent danger. The wolves are at the door. You must defend hearth and home. And here are the means to do it: we must provide programs, policies, tools and resources so that everybody can do the job.

Balanced, sensible nutrition: eat food, not too much, mostly plants, a healthy diet ala Michael Pollan, modern physical activity on a daily basis, modest weight loss - translated into a 58% reduction in the occurrence of diabetes. A clear indication of the power of lifestyle over health. The challenge now is the development of the community-based programs that will translate what we learned in the diabetes prevention program and put it to work in every town in America.

Epidemic obesity is an enormous problem. It's a pendulum that's swung too far. We have to swing it back. So it should come as no surprise that solution must be built from the ground up on the banks of this flooding river and it must be raised to a height higher than flood waters. Now what does that look like? It looks like policies and programs that cultivate healthy levels of physical activity, healthy dietary patterns in homes, in schools, in supermarkets, in neighborhoods, in clinics, in churches, in workplaces, throughout our society, every place we can reach people.