American society has become 'obesogenic,' characterized by environments that promote increased food intake, nonhealthful foods, and physical inactivity.In 2007-2008 almost 70% of representative sample of 5,555 adults from the US population were found to be overweight or obese. 33% were found to be obese (defined as a BMI of 30 or greater)1.
1 Flegal et al 2010. Prevalence and Trends in Obesity Among US Adults, 1999-2008. JAMA 303:235-241