A postmenopausal woman who uses hormone replacement therapy (HRT) may boost her risk for gallbladder disease, researchers say, although the risk appears to vary depending on how she receives the hormones. "For women who are using HRT, their risk of gallbladder disease is less if they use a patch or gel form of HRT rather than the tablet form of HRT," noted Dr. Bette Liu, a clinical epidemiologist at the University of Oxford in the United Kingdom.

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