Janet Wertheimer does a back hyperextension exercise at Boston Sports Club in Wellesley, Mass. Regular exercise has helped control her chronic back pain. Ellen Webber for NPR hide caption

itoggle caption Ellen Webber for NPR

Knee pain is common, but surgery isn't necessarily the answer, researchers say. Inna Jacquemin/iStockphoto hide caption

itoggle caption Inna Jacquemin/iStockphoto

We know you'd rather skip the fasting and bowel prep. But that's the way we've always done it. iStockphoto.com hide caption

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Ryan Braun of the Milwaukee Brewers has been suspended for the rest of the 2013 season after violating Major League Baseball's drug policy. Mike McGinnis/Getty Images hide caption

itoggle caption Mike McGinnis/Getty Images

Michael Pagliaro, left, laughs with Paul Scattaretico at the Muzic Store Inc. in Dobbs Ferry, N.Y., as Pagliaro picks up instruments for his rental business. Before Pagliaro had a hip replacement, pain made it difficult to work. Maggie Starbard/NPR hide caption

itoggle caption Maggie Starbard/NPR

Many arms, one robot: the business end of the da Vinci system is seen in this media handout image from the manufacturer. Mark Clifford/Courtesy of Intuitive Surgical, Inc. hide caption

itoggle caption Mark Clifford/Courtesy of Intuitive Surgical, Inc.

It's unlikely that July patients are paying for residents' inexperience with their lives. iStockphoto.com hide caption

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