Analysis of data from the Singapore Longitudinal Aging Study has confirmed the widely reported association between hearing impairment and an increased likelihood of developing dementia and / or mild cognitive impairment (MCI).
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Heywood, R. Gao, Q. [and] Nyunt, MSZ. [et al] (2017). Hearing loss and risk of mild cognitive impairment and dementia: findings from the Singapore Longitudinal Ageing Study. Dementia and Geriatric Cognitive Disorders. April 19th 2017; 43(5-6): pp.259-268.
Concerning Visual Impairment and Dementia…
Research by the College of Optometrists on the association between visual impairment and dementia came to attention again recently: although this NIHR report was published earlier in September 2016.