2nd Wind Fitness has a look at some new health statistics that just came out and offers some thoughts about what causes the high rates of obesity throughout the country:

Americans eat 5-10% fewer calories than 20 years ago, yet weigh approximately 5 pounds more.
In the U.S., 50 million men and 60 million women ages 18-79 are overfat, including more than 12 million who are considered severely obese.
One out of five children ages 5-17 is obese.