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Considering hearing loss as a modifiable risk factor for dementia.
Katharine K Brewster1, Jennifer A Deal2, Frank R Lin3
1Columbia University Vagelos College of Physicians and Surgeons, Department of Psychiatry, New York State Psychiatric Institute, New York.
Hearing loss is linked to cognitive decline and dementia risk in older adults. Addressing hearing loss may improve brain function and potentially reduce dementia risk.
Area of Science:
- Neuroscience
- Gerontology
- Public Health
Background:
- Growing evidence connects hearing loss to cognitive impairment and increased dementia risk.
- Mechanisms include brain atrophy, cognitive control network dysregulation due to listening effort, and social-emotional factors like loneliness and depression.
Purpose of the Study:
- To review the evidence linking hearing loss to dementia in older adults.
- To explore potential mechanisms and the impact of hearing remediation on brain health.
Main Methods:
- Systematic review and synthesis of existing literature.
- Analysis of studies on hearing loss, cognitive function, dementia, and hearing remediation.
Main Results:
- Hearing loss is associated with impaired cognition and dementia risk.
- Potential benefits of hearing remediation on brain structure and function are suggested by available data.
Conclusions:
- Further research is crucial to confirm if treating hearing loss can reduce cognitive decline and dementia risk.
- Investigating pathological links and identifying at-risk individuals is essential for future clinical trials.
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