Hearing Loss Linked to Increased Mortality Risk, Study Finds
Translated & summarized from Maariv by baba
A new study suggests hearing loss is linked to a higher risk of mortality, with severe loss increasing the risk by 56%. Using hearing aids was associated with a 9% lower overall mortality rate. While the study is observational, researchers point to potential mechanisms like reduced social interaction and cognitive strain. The article encourages hearing tests, noting advancements in hearing aid technology and potential financial assistance in Israel.
The story in 5 lines · by baba
- Hearing loss is linked to a 56% increased mortality risk, with severe loss posing the highest danger.
- Hearing aid users experienced a 9% lower overall mortality rate compared to non-users.
- Untreated hearing loss is considered a significant, modifiable risk factor for dementia.
- Hearing loss may lead to social isolation and increased cognitive strain, impacting health.
- The article encourages hearing tests, highlighting advancements in hearing aid technology.
A new study involving over 64,000 individuals suggests that hearing loss is not merely an inevitable part of aging but is associated with an elevated risk of mortality. The research, published in The Lancet Healthy Longevity, analyzed data from over 13,000 participants across Australia, Iceland, and the United States, measuring hearing through objective tests rather than self-reporting. The findings indicate a correlation between the severity of hearing loss and increased mortality risk: a 19% rise for mild loss, 55% for moderate, and 56% for severe loss. The risk of death from cardiovascular diseases also increased.
Crucially, the study observed that individuals using hearing aids experienced a 9% lower overall mortality rate and a 15% lower rate of cardiovascular mortality compared to those with similar hearing loss who did not use aids. These trends were corroborated by an examination of over 50,000 Norwegians in a separate study. However, the researchers emphasize that these are observational findings and cannot definitively prove that hearing aids themselves extend life, noting that users might be more health-conscious overall.
Despite the observational nature, there are plausible mechanisms linking hearing loss to health outcomes. The Lancet Commission on Dementia Prevention attributes about 7% of global dementia cases to untreated hearing loss, identifying it as a significant, modifiable risk factor. A 2023 controlled trial involving nearly a thousand older adults showed that while hearing aids did not improve cognition in the general group, they slowed cognitive decline by 48% over three years in participants already at high risk.
Potential explanations for the link include reduced social engagement due to communication difficulties, leading to isolation. The brain may also expend more resources on deciphering sounds, leaving fewer for memory functions. Furthermore, hearing loss is connected to an increased risk of falls, partly due to the interplay between auditory systems, balance, and spatial orientation. The cumulative effect of isolation, reduced mobility, falls, and less cognitive stimulation can independently increase mortality risk.
The article encourages proactive hearing health, noting that hearing aids have become discreet and technologically advanced, connecting to smartphones and adapting to noisy environments. In Israel, financial assistance for hearing aids may be available through the national health basket. The piece concludes by urging individuals to undergo hearing tests, especially older adults or those with suspected loss, as early detection is key, and the implications extend beyond mere inconvenience to heart and brain health.