Just knowing that someone is obese doesn't mean they would benefit from bariatric surgery, doctors say. iStockphoto.com hide caption

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Teenagers put in more than two hours a day of TV time on average, still more than what pediatricians say is healthy. iStockphoto.com hide caption

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Small declines in obesity among young kids could help stem bigger problems in the future. Ocean/Corbis hide caption

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Ocean/Corbis

Falling Obesity Rates Among Preschoolers Mark Healthful Trend

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Adam Cole/NPR

Your Child's Fat, Mine's Fine: Rose-Colored Glasses And The Obesity Epidemic

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Napping in class may be common, but it's also a sign that kids need more sleep. iStockphoto.com hide caption

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Sacrificing Sleep Makes For Run-Down Teens — And Parents

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A poll needs to ask about randomly selected children in households across the country to bring context to what's happening with kids like 7-year-old Henry Condes in Los Angeles. David Gilkey/NPR hide caption

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David Gilkey/NPR

A new poll explores what happens in American households during the hours between school and bedtime. Image courtesy of The Bishop family (left), The Benavides family (top right), NPR (center) and The Jacobs family (bottom right) hide caption

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Image courtesy of The Bishop family (left), The Benavides family (top right), NPR (center) and The Jacobs family (bottom right)

How 'Crunch Time' Between School And Sleep Shapes Kids' Health

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Kathy Del Tonto (far right) participates in a class that teaches school cafeteria workers how to prepare meals from scratch. LiveWell Colorado hide caption

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LiveWell Colorado

One Lunch Lady's Cafeteria Conversion

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An overweight child reads her part during a skit that was in a 2010 program promoting healthy lifestyles sponsored by Children's Hospital near Denver. John Moore/Getty Images hide caption

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John Moore/Getty Images

When they eat out at a restaurant, kids consume more calories than they do at home. Here, members of the Long Island Gulls hockey team enjoy a lunch at TGI Friday's back in 2007 in Marlborough, Mass. Bruce Bennett/Getty Images hide caption

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Bruce Bennett/Getty Images

New Anti-Obesity Ads Blaming Overweight Parents Spark Criticism

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Canned food is a source of BPA exposure, but researchers aren't sure whether it causes childhood obesity. Above, the soup isle at a grocery store in Washington, D.C. Maggie Starbard/NPR hide caption

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Maggie Starbard/NPR

Link Between BPA And Childhood Obesity Is Unclear

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Childhood obesity is on the rise in many countries and overuse of antibiotics is now on the radar as a possible factor in the epidemic. Here 18-month-old twins are weighed in a nutritionist's office in Colombia. Raul Arboleda/AFP/Getty Images hide caption

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Raul Arboleda/AFP/Getty Images