Americans are getting fatter. A third of them are now obese-not just a few pounds overweight, but heavy enough to put their health in jeopardy. But, one state bucks the trend. Colorado is the leanest state in the nation, but not because of something in the air or the water. Rather, it's where diet, activity, and environment perfectly intersect.
From their Denver-based research facility, leading weight-loss experts Dr. James Hill and Dr. Holly Wyatt...