Quote from article:
"A 2011 study by Johns Hopkins University in the United States had monitored more than 600 adults over 12 years; and identified hearing loss as an important risk factor of dementia. After factoring in other risks, patients with hearing loss were two to five times more likely to develop dementia, depending on the severity of their hearing problem. Other studies, including one from Singapore, also arrived at a similar conclusion.
There are three theories that might be able to explain the link between hearing loss and dementia.
First, certain diseases (for example, those that cause the narrowing of blood vessels) can accelerate both cognitive decline and hearing loss.
Second, the increased cognitive resources diverted towards understanding what one is hearing can result in less cognitive reserves being available for memory and other mental functions.
Last, hearing loss results in social isolation, which is a risk factor of dementia."
How dementia and hearing loss are linked - Tan Tock Seng Hospital (ttsh.com.sg)
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