"The sound of silence": when the brain doesn't hear

Cognitive impairment is one of the leading causes of disability worldwide and it affects about 6.5% of the population over the age of 65. Hearing impairment is a significant health problem and a possible cause for dementia. Preventing hearing loss or at least correcting it by the use of acoustic prosthesis may reduce the onset of dementia in old age....

This article reinforces the established hearing loss–cognitive impairment link but, without reviewing specific new findings (e.g., effect sizes, study design details, or novel mechanisms), no immediate change to clinical practice is warranted beyond existing guidance to screen older adults for both hearing and cognitive decline.

Understanding the biological and cognitive pathways linking hearing impairment to cognitive decline could sharpen screening protocols and support earlier intervention strategies for aging patients.

1. 01Cognitive impairment affects approximately 6.5% of adults over 65 and is a leading global cause of disability.
2. 02The article examines how the brain responds — or fails to — when deprived of normal auditory input.
3. 03Published in Aging Clinical and Experimental Research (2026), suggesting peer-reviewed scientific scrutiny.
4. 04The hearing loss–dementia relationship remains an active and clinically significant area of research.
5. 05Findings may inform audiological screening practices within geriatric care settings.

PMID

42252380

DOI

10.1007/s40520-026-03412-5.

Journal

Aging Clinical and Experimental Research

Publication type

research_article

Evidence level

2b

Population

Adults aged 65 and older with hearing impairment and/or cognitive impairment

Intervention

Hearing impairment (auditory deprivation / hearing loss) as exposure