The group of women in a new study with the lowest rate of breast cancer consumed about four tablespoons of olive oil each day. Heather Rousseau/NPR hide caption

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A long legacy in global health: Former President Jimmy Carter has worked to end neglected diseases since 1982. Here he sits with former South African President Nelson Mandela at a ceremony in Soweto, celebrating a new AIDS project in 2002. AFP/Getty Images hide caption

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For best quality of life, many cancer patients who can't be cured might do best to forgo chemo and focus instead on pain relief and easing sleep and mood problems, a survey of caregivers suggests. iStockphoto hide caption

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HPV vaccine prevents cervical cancer and other cancers by fending off the virus that causes them. But it's been a tough sell with doctors and parents. Joe Raedle/Getty Images hide caption

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In the movie The Fault in Our Stars, having terminal cancer doesn't look so bad for Hazel, played by Shailene Woodley, and Gus, played by Ansel Elgort. James Bridges/Temple Hill Entertainment/Kobal Collection hide caption

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Actress Rita Wilson arrives at the premiere of the documentary Fed Up in West Hollywood, Calif., in May 2014. Gus Ruelas/Reuters/Landov hide caption

itoggle caption Gus Ruelas/Reuters/Landov

An architectural rendering of the Cleveland Clinic's planned cancer center. Courtesy of the Cleveland Clinic hide caption

itoggle caption Courtesy of the Cleveland Clinic

Dr. George Papanicolaou discovered that it was possible to detect cancer by inspecting cervical cells. The Pap smear, the cervical cancer screening test, is named after him. American Cancer Society/AP hide caption

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Science-based guidelines say there's no benefit to getting an EKG of heart activity before routine cataract surgery — even if the patient is old. But most doctors order such tests anyway. Bull's Eye/ImageZoo/Corbis hide caption

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