Of these 12 risk factors, an untreated hearing loss in midlife remains the largest modifiable risk factor of dementia. The risk of dementia also varies based on level of hearing loss.
- Mild hearing loss doubles the risk of dementia
- Moderate hearing loss triples the risk of dementia
- Severe hearing impairment increases the risk of dementia of up to five times that of those who don't have a hearing impairment
The recent study by the Lancet also states that, “hearing loss might result in cognitive decline through reduced cognitive stimulation.” The study further recommends the use of hearing aids for those with hearing loss, as a way to protect against cognitive decline.
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