President Obama signs a series of executive orders Wednesday about the administration's gun law proposals as Vice President Biden and children who wrote letters to the White House about gun violence look on. Chip Somodevilla/Getty Images hide caption

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Some parents have worried that kids get too many vaccinations too quickly. A review of all the available research suggests those concerns are misplaced. Dmitry Naumov/iStockphoto.com hide caption

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Health care reform should make it easier for many children to get routine dental checkups that are covered by insurance. Terry J Alcorn/iStockphoto.com hide caption

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Many popular food games for computers and devices like tablets are actually "advergames", created by food manufacturers to market their products to kids. iStockphoto.com hide caption

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Members of the boys basketball team from Dimond High School in Anchorage, Alaska, celebrate their 2012 state championship victory. Psychological research shows that sports camaraderie improves teenagers' mental health. Charles Pulliam/AP hide caption

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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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According to a study published in Pediatrics, boys are entering puberty six months to two years earlier than they did in past studies. iStockphoto.com hide caption

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People at a Denver party early this month celebrate the recognition of an amendment to the Colorado constitution legalizing recreational use of marijuana. Brennan Linsley/AP hide caption

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There's new evidence that kids can reduce calories and feel full by snacking on veggies and cheese instead of chips. famfriendsfood/Flickr.com hide caption

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A woman holds a child as people line up to enter the Newtown Methodist Church near the scene of the elementary school shootings in Newtown, Conn. Douglas Healey/Getty Images hide caption

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