The percentage of teenagers who are obese has more than quadrupled in the past 40 years, according to the National Center for Health Statistics. Among 12-to-19-year-olds, just 5.0 percent were obese in the 1976–1980 National Health and Nutrition Examination Survey. Forty years later in 2017–2018, a much larger 21.2 percent of teenagers were obese. Obesity is defined as a sex-specific BMI (body mass index) at or above the 95th percentile for the age group in the CDC's 2000 Growth Charts.
Percent of 12-to-19-year-olds who are obese
2017–2018: 21.2%
2007–2008: 18.1%
1999–2000: 14.8%
1976–1980: 5.0%
Teen boys are more likely than teen girls to be obese—22.5 percent of boys and 19.9 percent of girls were obese in 2017–2018.
Obesity is a growing problem for younger children as well. In the 6-to-11 age group, 20.3 percent were obese in 2017–18 (up from 6.5 percent in 1976–1980). Among children aged 2-to-5, a substantial 13.4 percent were obese in 2017–2018 (up from 5.0 percent in 1976–1980).
Source: National Center for Health Statistics, Prevalence of Overweight, Obesity, and Severe Obesity among Children and Adolescents Aged 2–19 Years: United States, 1963–1965 through 2017–2018
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