The proportion of U.S. adults who self report they are obese increased nearly 2 percent between 2005 and 2007, according to a report in today′s Morbidity and Mortality Weekly Report (MMWR). An estimated 25.6 percent of U.S. adults reported being obese in 2007 compared to 23.9 percent in 2005, an increase of 1.7 percent. The report also finds that none of the 50 states or the District of Columbia has achieved the Healthy People 2010 goal to reduce obesity prevalence to 15 percent or less.

In three states – Alabama, Mississippi, and Tennessee – the prevalence of self-reported obesity among adults age 18 or older was above 30 percent. Colorado had the lowest obesity prevalence at 18.7 percent. Obesity is defined as a body mass index (BMI) of 30 or above. BMI is calculated using height and weight. For example, a 5-foot, 9-inch adult who weighs 203 pounds would have a BMI of 30, thus putting this person into the obese category.