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Neighborhood Noise May Increase Dementia Risk

Alzheimer’s disease and other forms of dementia affect millions of older adults in the US—but not equally. Past research has identified risk factors including genes, education, racism, and air pollution, and a growing number of studies now point to noise as another influence on risk of dementia.

Now, a new study co-led by a School of Public Health researcher finds that 10 decibels more daytime neighborhood noise is associated with 36 percent higher odds of mild cognitive impairment and 30 percent higher odds of Alzheimer’s disease.

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Published in Alzheimer’s & Dementia, the journal of the Alzheimer’s Association, the study is the first of its kind in the US.

“We remain in early stages in researching noise and dementia, but the signals so far, including those from our study, suggest we should pay more attention to the possibility that noise affects cognitive risk as we age,” says study first author Jennifer Weuve, associate professor of epidemiology.

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