Several House Democrats think American children are too fat, and have proposed legislation that would require the federal government to create a "national strategy to reduce childhood obesity."

Under their new bill, the Department of Health and Human Services would have to work with state and local governments to create a plan that would reduce childhood obesity rates by 10 percent by 2020.

The bill finds that childhood obesity has more than doubled over the last 30 years, and obesity for adolescents, those aged 12-19, has quadrupled.

"An estimated 70 percent of overweight young people have at least 1 additional risk factor for heart disease, such as high cholesterol or high blood pressure," the bill finds. "In addition, children who are overweight are at greater risk for bone and joint problems, sleep apnea and social and psychological problems such as stigmatization and poor self-esteem."

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The bill would hope to achieve its goal in several ways, including by providing grants from the Centers for Disease Control and Prevention to local governments for programs that help kids lose weight. Qualifying programs could be aimed at improving nutrition in school meals, boosting nutritional education and increasing physical activities during school.

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