A kidney donor is wheeled to an operating room for a transplant at Johns Hopkins Hospital in Baltimore in late June. Brendan Smialowski/AFP/Getty Images hide caption

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Some Americans are cutting back on red meat, and health concerns seem to be the biggest reason they're doing it, a survey found. Shmeliova Natalia/iStockphoto.com hide caption

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All in the family: Nino Giarratano (left), the head baseball coach at the University of San Francisco, joins hands with his father, Mickey Giarratano, after the transplant of a kidney from son to father at Porter Adventist Hospital in Denver last year. AP/Courtesy Giarratano Family hide caption

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A Transportation Security Administration volunteer demonstrates a full-body scanner at Chicago's O'Hare International Airport in March 2010. Scott Olson/Getty Images hide caption

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University of Miami pediatrician Judith L. Schaechter gives an HPV vaccination to a 13-year-old girl last week in Miami. Joe Raedle/Getty Images hide caption

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A truckload of live turkeys arriving at a Cargill processing plant in Springdale, Ark., on Aug. 4. Cargill recalled fresh and frozen ground turkey products produced at the plant from Feb. 20 through Aug. 2 due to possible contamination from the strain of salmonella linked to 76 illnesses and the one death. Danny Johnston/AP hide caption

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Peanuts were a problem for 9 percent of households that reported someone with a food allergy or intolerance. iStockphoto.com hide caption

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