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Dementia is a collective term for cognitive disorders primarily affecting memory, thinking, and reasoning. It is not a specific disease but a syndrome, with Alzheimer's disease being the most common cause, accounting for approximately 60-80% of cases. Other types include vascular dementia, Lewy body dementia, and frontotemporal dementia. Dementia affects millions worldwide, particularly older adults, though it is not a normal part of aging.
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Related Experiment Video

Updated: Oct 11, 2025

Cryosectioning and Immunostaining Mouse Inner Ear Tissue: From Embryonic to Adult Stages
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[Hearing and dementia: is there a link?]

N L Kunelskaya1,2, Z O Zaoeva1, Yu V Levina1,2

  • 1Sverzhevky Research Institute of Clinical Otorhinolaryngology, Moscow, Russia.

Zhurnal Nevrologii I Psikhiatrii Imeni S.S. Korsakova
|December 6, 2021
PubMed
Summary

Untreated hearing loss is linked to dementia and social challenges. Early diagnosis and treatment of hearing loss may improve cognitive function and reduce dementia risk.

Keywords:
cochlear implantationdementiahearing losshearing replacementtonal threshold audiometry

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Area of Science:

  • Gerontology
  • Neurology
  • Audiology

Background:

  • Hearing loss is a prevalent condition in older adults.
  • Hearing loss is associated with significant social and functional impairments.
  • There is growing evidence linking hearing loss to cognitive decline and dementia risk.

Purpose of the Study:

  • To review the existing literature on the correlation between hearing loss and dementia.
  • To highlight hearing loss as a potentially modifiable factor in dementia prevention.
  • To emphasize the importance of timely diagnosis and treatment of hearing loss in the elderly.

Main Methods:

  • Literature review of studies examining the relationship between hearing loss and dementia.
  • Analysis of research on the cognitive and social consequences of hearing loss.
  • Discussion of challenges in the diagnosis and rehabilitation of hearing loss in elderly populations.

Main Results:

  • The literature confirms a correlation between hearing loss and dementia.
  • Treating hearing loss may offer benefits for cognitive function.
  • Hearing loss contributes to social isolation, reduced independence, and communication difficulties.

Conclusions:

  • Hearing loss is a significant public health issue with implications for cognitive health.
  • Addressing hearing loss through timely intervention is crucial for dementia prevention.
  • Further research is needed to fully understand the benefits of hearing loss treatment on cognitive function and overall well-being.