What type of study is this?

This is a Validation Study study.

What question did this study set out to answer?

To explore the association between hearing loss, social isolation, and dementia in older adults.

January 6, 2026The Journals of Gerontology Series B0 citationsOpen Access

Elucidating the relationship between hearing loss, social isolation, and dementia: data from the National Health and Aging Trends Study

SVSanjena VenkateshCalifornia University of Pennsylvania RWRoger WongSUNY Upstate Medical University MCMartin CorstenDalhousie University

Key Points

To explore the association between hearing loss, social isolation, and dementia in older adults.
Analyzed data from the NHATS including individuals aged 65+ without dementia at baseline.
Hearing loss assessed via pure tone audiometry classified as normal, mild, or moderate-severe.
Used a validated composite measure to evaluate social isolation.
Applied stratified multivariable logistic regression models to assess relationships.
Moderate-severe hearing loss increased dementia odds (OR = 1.91).
Attenuation in odds observed among hearing aid users (OR = 1.84).
Higher social isolation rates noted among those with hearing impairment (p < 0.001).
Social isolation correlated independently with higher dementia incidence (p = 0.001).
Significant association between moderate-severe hearing loss and dementia odds in non-isolated individuals (OR = 2.29).

Abstract

Abstract Objectives Dementia is a growing public health challenge affecting millions. Hearing loss is a potentially modifiable risk factor, though its precise pathway to dementia remains unclear. Social isolation may influence this relationship. This study examines the association between hearing loss and dementia, assessing for a moderating role of social isolation. Methods We analyzed data from the National Health and Aging Trends Study (NHATS), including individuals aged 65+ without baseline dementia. Hearing loss was assessed via pure tone audiometry, categorized as normal, mild, or moderate-severe. Social isolation was evaluated using a validated composite measure derived from NHATS items. The NHATS dementia classification algorithm was used. Stratified multivariable logistic regression models were used to evaluate the relationship between hearing loss and dementia and to examine the moderating effect of social isolation. Results Moderate-severe hearing loss significantly increased dementia odds (OR = 1.91, 95% CI: 1.11–3.29)—with attenuation observed among hearing aid users (OR = 1.84, 95% CI: 0.97–3.49). Individuals with hearing impairment demonstrated higher rates of social isolation (p 0.001), which independently correlated with increased dementia incidence (p = 0.001). Stratified analyses revealed a significant association between moderate-severe hearing loss and odds of dementia among non-socially isolated individuals, (OR = 2.29, 95% CI: 1.18–4.43), but not among socially isolated individuals (OR = 1.25, 95% CI: 0.39–4.04). Discussion Moderate-severe hearing loss is associated with increased dementia risk—a relationship which appears moderated by social isolation status. This data may provide preliminary insights into potentially mediating effects. Further longitudinal research is needed to clarify this pathway and inform dementia prevention strategies.

问 AI

Bookmark

View Full Paper