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Hearing loss is a leading risk factor for dementia, but studies of hearing interventions have been mixed. To explore the effect of a hearing aid intervention on the development of dementia in older adults, researchers in China randomized 700 adults ≥60 years old with mild cognitive impairment (MCI) and hearing loss to receive hearing aids or hearing care education. Cognition was assessed in 30- to45-minute interviews using a standardized dementia rating scale.
At 2 years, the incidence of dementia was not significantly different in the hearing aid and control groups (3% and 5%, respectively, P=0.2).
In a secondary analysis, significantly more patients reverted to normal cognition in the hearing-aid group compared with the co…