When scientists observe higher-than-expected numbers of individuals who have a disease, the term epidemic is often used. Since the 1980s, the number of children and adolescents defined as overweight and obese has nearly tripled (from about 5% to 15%). The number of adults who are overweight and obese has also increased substantially over the past 30 years. In fact, it is estimated that approximately 65% of U.S. adults are overweight or obese. This substantial increase in the number of overweight and obese children and adults has led to the widespread use of the term obesity epidemic.
Learn more about childhood obesity from the National Center for Chronic Disease Prevention and Health Promotion.
