A U.S. soldier is brought to the emergency room at the U.S. hospital at Bagram Air Field, north of Kabul, after he was wounded by a roadside bomb in Wardak province, June 2009. The facility uses both cutting-edge technology as well as old techniques discovered anew to treat the massive number of wounded soldiers who pass through. Rafiq Maqbool/AP hide caption

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Study says it might be the ritual of taking placebos that makes them work like pills. David Sucsy/iStockphoto.com hide caption

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Natasha Smahlei, a model, works at the Caitlin Raymond International Registry exhibit in October during the New England Business Expo at the DCU Center in Worcester, Mass. Paul Kapteyn/Courtesy of www.telegram.com hide caption

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A radiologist examines a mammogram for signs of breast cancer in Los Angeles in May, 2010. Damian Dovarganes/AP Photo hide caption

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The maker of the Man Up Now sexual supplement says it contains fruit like these from the Wolfberry plant to prevent side effects from other ingredients. Wikimedia Commons hide caption

itoggle caption Wikimedia Commons

A man looks over a room of cholera victims in Port au Prince, Haiti, Dec. 10 David Gilkey/NPR hide caption

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Scientists say cranberry's medicinal powers include preventing bacteria like E. coli and staph from sticking to cells. Zac Visco for NPR hide caption

itoggle caption Zac Visco for NPR