Age-related hearing loss is linked to loneliness and poorer cognitive health, but it remains unclear whether loneliness helps explain associations between hearing difficulties and cognitive performance or dementia, and whether these patterns reflect causal pathways or shared underlying liability....
While causality is not yet established, this longitudinal and genetic evidence strengthens the case for audiologists to screen for social isolation and loneliness in patients with age-related hearing loss, given the potential downstream cognitive risks.
If loneliness is confirmed as a key mediator between hearing decline and cognitive aging, interventions addressing social connection — alongside hearing rehabilitation — could become a core strategy in dementia prevention.
- 01Loneliness is proposed as a mediating pathway linking age-related hearing decline to cognitive aging outcomes.
- 02Study uses both longitudinal observational data and genetic (Mendelian randomization-style) evidence.
- 03Posted as a medRxiv preprint (PMID 42064938) — not yet peer-reviewed.
- 04Builds on existing literature linking hearing loss and dementia risk, adding a social mechanism.
- 05Findings could inform holistic hearing rehabilitation models targeting social engagement.
Loneliness mediates the relationship between age-related hearing decline and cognitive aging.
studypartially supportedGenetic evidence supports a causal pathway from hearing decline through loneliness to cognitive decline.
studypartially supported- PMID
- 42064938
- DOI
- 10.64898/2026.04.16.26351059.
- Publication type
- preprint
- Evidence level
- 2b
- Population
- Adults with age-related hearing decline drawn from longitudinal cohort(s)
- Intervention
- Age-related hearing decline (exposure) with loneliness as candidate mediator
- Comparator
- Adults without significant hearing decline
Primary outcomes
Cognitive aging outcomes; Mediation effect of loneliness on the hearing loss–cognitive aging pathway