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Postmenopausal Hormone Therapy Linked to an Increased Risk of Hearing Loss

by Madhumathi Palaniappan on May 11, 2017 at 12:27 PM
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Postmenopausal Hormone Therapy Linked to an Increased Risk of Hearing Loss

Hearing loss occurs with around 48 million Americans and the number is expected to increase as the population age.

Previous studies have found menopause to have increased the risk of hearing loss, due to the reduction of the circulating estrogen levels and that postmenopausal hormone therapy may slow down the hearing loss by 'replacing' the estrogen.

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To investigate the role of menopause and postmenopausal hormone therapy as risk factors for hearing loss, researchers at Brigham and Women's Hospital prospectively examined the independent links between menopausal status, oral hormone therapy, and risk of self-reported hearing loss in 80,972 women in the Nurses' Health Study II followed from 1991-2013. The findings are published online May 10, 2017 in Menopause, The Journal of the North American Menopause Society.

During the study period, 23 percent of the participants developed hearing loss. Researchers found no significant overall association between menopausal status and risk of hearing loss, although higher risk was associated with older age at natural menopause. Use of postmenopausal hormone therapy was associated with higher risk of hearing loss, and the risk tended to increase with longer duration of use.
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"Many factors contribute to acquired hearing loss, including age, genetics, noise, medical conditions, diet and lifestyle factors," stated Sharon Curhan, MD, ScM, lead author of the paper and a researcher at the Channing Division of Network Medicine at Brigham and Women's Hospital. "Our research focuses on identifying preventable contributors to hearing loss.

Although the role of sex hormones in hearing is complex and incompletely understood, these findings suggest that women who undergo natural menopause at an older age may have a higher risk. In addition, longer duration of postmenopausal hormone therapy use is associated with higher risk. These findings suggest that hearing health may be a consideration for women when evaluating the risks and benefits of hormone therapy," Curhan said.



Source: Eurekalert
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