Today with Claire Byrne The link between hearing loss and the risk of dementia
Aug 20, 2025
Ian Robertson, founding director of the Trinity College Institute of Neuroscience and author of ‘How Confidence Works,’ tackles the intriguing link between hearing loss and dementia. He highlights how hearing aids can significantly reduce dementia risk in the 60s population. The conversation delves into how social engagement helps preserve cognitive health, while stressing the cognitive strain of hearing difficulties. Robertson also addresses the stigma around hearing aids, advocating for a shift in perception to embrace auditory health for a brighter future.
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Hearing Treatment Cuts Dementia Risk
- Multiple randomized controlled trials suggest treating hearing loss in your 60s greatly lowers dementia risk by a large margin.
- The evidence shifts hearing loss from a correlation to a likely causal, preventable risk factor.
Social Withdrawal Erodes Cognitive Reserve
- Social withdrawal from untreated hearing loss reduces mental stimulation and weakens cognitive reserve.
- Reduced conversation and idea exchange deprives the brain of maintenance that helps prevent dementia.
Straining To Hear Raises Brain Load
- The cognitive-load hypothesis says straining to hear consumes brain resources and raises stress.
- Chronic stress and extra effort may make memory regions more vulnerable to damaging processes.
