An individual participant data meta-analysis of population-based cohorts from Australia, Iceland, and the USA, replicated in a Norwegian sample, found that greater severity of hearing loss corresponds to higher all-cause mortality risk. Among those with hearing loss, hearing-aid use was associated with reduced mortality. Sensory function emerges as a measurable and partly modifiable marker of survival in older adults.
Key Points
- Hearing loss severity scales with higher all-cause mortality risk
- Hearing-aid use associated with reduced mortality among affected adults
- Findings consistent across four countries plus Norwegian replication cohort
Longevity Analysis
Auditory decline is rarely treated as a survival-relevant variable, yet it sits upstream of cognitive load, social engagement, balance, and the chronic vigilance that accompanies effortful listening — each with established links to functional decline. Correcting the input restores accurate signal to the brain and may reduce the compensatory burden carried by attention, mood, and postural control. The intervention is unusually tractable: audiometric screening is cheap, amplification is available, and benefit depends almost entirely on sustained daily use rather than novel technology.
Original published by The Lancet Healthy Longevity, by Chuan-Ming Li, Howard J Hoffman, Bo Engdahl, Bamini Gopinath, Catherine M McMahon, Christa L Themann, Vilmundur Gudnason, Adrian C Davis.