Why the United States is filled with fatties

1. "Fewer Americans bike to work despite new trails, lanes and bicycle share programs" (biking to work is also far cheaper than driving).

2. Sugar consumption remains high and might be increasing.

What you can do about these problems is clear: quit sugar and ride a bike. Like many things, these changes may be hard at first, but once you make them, you will be baffled that everyone doesn't.