“Childhood obesity has more than doubled in children and quadrupled in adolescents in the past 30 years.  The prevalence of obesity was 18.5% and affected about 13.7 million children and adolescents.  The percentage of children aged 6–11 years in the United States who were obese increased from 7% in 1980 to nearly 18% in 2012, now 18.4%.   Similarly, the percentage of adolescents aged 12–19 years who were obese increased from 5% to nearly 21% over the same period, now is 20.6%.”

CDC