From the CDC...Not super proud.

Obesity and Overweight

(Data are for the U.S.)

• Percent of adults age 20 years and over who are obese: 34% (2007-2008)
• Percent of adults age 20 years and over who are overweight (and not obese): 34% (2007-2008)

Source: Prevalence of Overweight, Obesity, and Extreme Obesity Among Adults: United States, Trends 1976–1980 Through 2007–2008

• Percent of adolescents age 12-19 years who are obese: 18% (2007-2008)
• Percent of children age 6-11 years who are obese: 20% (2007-2008)
• Percent of children age 2-5 years who are obese: 10% (2007-2008)