Can the noisy traffic outside your home increase your risk of getting dementia ?
A study from Denmark looked at “exposure to road traffic and railway noise” and “risk of dementia” in later life.
They found “traffic noise” is associated with risk of dementia.
A word of caution though!
This study does NOT conclusively prove that noise caused dementia. In science, association does not prove causation.
It is known that some people with hearing loss are more likely to develop dementia in later life.
It is possible that people with hearing loss were NOT bothered with traffic noise and carried on living in places with traffic noise.
On the other hand, people with good hearing were bothered by traffic noise and moved away from areas with traffic noise to live in a quieter area with less traffic noise.
This natural human behaviour could have affected the results of this study from Denmark
So, it may appear, at first glance, that traffic noise caused dementia. But deeper examination shows that the results of Denmark study are not conclusive and more confirmatory studies are needed.
Residential exposure to transportation noise in Denmark and incidence of dementia: national cohort study
BMJ 2021; 374 doi: https://doi.org/10.1136/bmj.n1954 (Published 09 September 2021)Cite this as: BMJ 2021;374:n1954
Dementia.org: The Connection Between Hearing Loss And Dementia
Hearing loss and the connection to Alzheimer’s disease, dementia
By American Heart Association News.
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