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May 13, 2026
Phonak Insight: Hearing Loss and Cognitive Health – Summary of the Research
A review of the most recent research was done to explore the relationship between age-related hearing loss and cognitive decline/dementia.
Key Findings:
Hearing loss is a modifiable dementia risk factor. Midlife hearing loss is linked to a higher risk of later-life cognitive decline, with estimates suggesting it may account for up to 8% of dementia cases globally.
Why it happens:
- Cognitive load: Extra mental effort needed to process degraded sounds may reduce resources for memory and thinking.
- Brain structure changes: Hearing loss is associated with faster brain atrophy, particularly in auditory and related cortical areas.
- Social isolation: Hearing difficulties may lead to withdrawal, reducing cognitive stimulation.
Why intervention helps?
- Hearing aids can improve communication, social participation, and quality of life.
- Some studies suggest hearing intervention may slow cognitive decline, but evidence is still emerging
- Large-scale trials, like ACHIEVE, are beginning to provide stronger support.
What does this mean for us?
- Routine hearing screening in older adults is essential.
- Early intervention offers potential benefits for both communication and cognitive health.
- Interdisciplinary care between audiology, geriatrics, and neurology is recommended
Conclusion
Age-related hearing loss is not just a sensory issue, it is a significant public health concern with links to cognitive health. Identifying and treating hearing loss early may help maintain brain function and reduce dementia risk.