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    These May Cut Risk of Breast Cancer Return in Obese

    Experts think anti-inflammatory drugs like aspirin might help cancer treatments work better

    WebMD News from HealthDay

    By Kathleen Doheny

    HealthDay Reporter

    THURSDAY, Aug. 14, 2014 (HealthDay News) -- Obese women who have battled breast cancer might halve their chances of a recurrence if they take aspirin or other nonsteroidal anti-inflammatory drugs (NSAIDs) regularly, new research suggests.

    The researchers followed 440 breast cancer survivors -- most of them past menopause and overweight or obese -- who were diagnosed between 1987 and 2011. The women had estrogen receptor-positive breast cancer, which requires the hormone estrogen to grow.

    Over the seven-year follow-up, taking the pain medications was linked to a difference in recurrence: "Twelve percent of those not taking NSAIDs had a recurrence, but 6 percent of those taking the drugs did," said study author Linda deGraffenried, an associate professor of nutritional sciences at the University of Texas in Austin.

    Of the 440 women, 159 used painkillers and 281 did not. Most of those using painkillers took aspirin, deGraffenried said, while some took other types of NSAIDs, such as Motrin or Aleve.

    The average body mass index (BMI) of the women was about 31. BMI is a measurement based on height and weight. A BMI of 30 and higher is termed obese; a BMI of 25 to 29.5 is considered overweight. At the time of diagnosis, the women were about age 55 to 60.

    If the cancer did recur, it took longer in those who took painkillers: 6.5 years compared to about 4.2 years for the nonusers, the investigators found.

    How could the painkillers, which the women took for arthritis and other problems, help? The key may be the anti-inflammatory properties of the medicines, deGraffenried said.

    Researchers know that obese women who develop estrogen-positive cancers do worse when they are given hormone therapy known as aromatase inhibitors. "One of the key reasons that obese women do worse on hormone therapy is because of inflammation induced by obesity," deGraffenried said. Reducing the inflammation with aspirin and other NSAIDs, she explained, may improve how well the hormone therapies work.

    However, deGraffenried noted, it's too soon to recommend taking NSAIDs for reducing either breast cancer recurrence or development. And while the researchers found an association between NSAID use and a reduced risk of breast cancer recurrence, the study was not designed to prove cause and effect.

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