Trends and Correlates of Class 3 Obesity in the United States From 1990 Through 2000

Abstract
The prevalence of obesity, defined as a body mass index (BMI) of 30 or more, has markedly increased during the last 3 decades in the United States1-3 and other countries.4-6 Between 1976-1980 and 1999, for example, the prevalence of obesity increased from 13% to 27% among US adults.1,7