An ambulance makes its way through revelers in Cardiff city center in Wales in 2010. New measures in the city have reduced injuries caused by violence. Matt Cardy/Getty Images hide caption

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Differences in brain chemistry can affect an individual's likelihood of weight gain. Katherine Streeter for NPR hide caption

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Katherine Streeter for NPR

Calling Obesity A Disease May Make It Easier To Get Help

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A Thai medic checks bodies for forensic identity in Phang Nga province in southern of Thailand on Jan. 11, 2005. Thousands of people were killed in Thailand after a massive tsunami struck on Dec. 26, 2004. Pornchai Kittiwongsakul/AFP/Getty Images hide caption

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After Disasters, DNA Science Is Helpful, But Often Too Pricey

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Michelle Williams (center) and two daughters visit the grave of her mother, Judy Williams, at Fairview Cemetery in Hyde Park, Mass., on May 11. Judy died in 2011. Ellen Webber for NPR hide caption

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Ellen Webber for NPR

A Boston Family's Struggle With TB Reveals A Stubborn Foe

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Most people polled in a new survey said government programs to make fresh fruits and vegetables more affordable sound like a great idea. iStockphoto.com hide caption

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PepsiCo's product line ranges from salty chips and its sugary namesake drink to more healthful fare like hummus and yogurt. In 2010, the company announced plans to cut sugar, fat and sodium in its products to address health and nutrition concerns. Joe Raedle/Getty Images hide caption

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How One Man Tried To Slim Down Big Soda From The Inside

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People line up at a Duane Reade pharmacy in New York behind a sign announcing the recent flu outbreak. Andrew Kelly/Reuters/Landov hide caption

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Andrew Kelly/Reuters/Landov

Bad Flu Season Overshadows Other Winter Miseries

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San Juan Creek meets the Pacific Ocean at Doheny State Beach in Dana Point, Calif. The poor water quality off Doheny State Beach put in a list of worst beaches in the U.S. Reed Saxon/AP hide caption

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A fireman walks amongst the rubble and the smoldering wreckage of the World Trade Center in New York in the wake of the Sept. 11, 2001, attacks. Gary Friedman/AFP/Getty Images hide caption

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