The new nutrition standards will replace school lunch dishes like pizza sticks with salad. iStockphoto.com hide caption

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Even in the remote Faroe Islands, some children have high levels of perfluorinated compounds in their blood. The chemicals may interfere with the immune system. Stig Nygaard/Flickr hide caption

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People stroll down a street in Montpelier, Vt., last summer. In 1995, 13.4 percent of Vermonters were considered obese. The figure climbed to 23.5 percent in 2011. The latest national data suggest the obesity epidemic has plateaued, however. Toby Talbot/AP hide caption

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Eliminating junk food from a child's diet is usually not enough to effectively treat attention deficit disorders, a paper shows. Tarah Dawdy via Flickr hide caption

itoggle caption Tarah Dawdy via Flickr

Old paint is the chief source of lead poisoning in children. iStockphoto.com hide caption

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Experiences in youth shape our health in old age. That's the key lesson from the world's longest-running medical study. iStockphoto.com hide caption

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