About The Study: In this case-control study, exposures to ambient particulate matter with a diameter less than 2.5 μm or nitrogen dioxide were each associated with increased risks of dementia with Lewy bodies and Parkinson disease–related dementia, with a greater magnitude of association for risk of dementia with Lewy bodies. These findings warrant concern about the impact of air pollution on brain health.
Corresponding Author: To contact the corresponding author, Dimitry S. Davydow, MD, MPH, email ddavydow@ufl.edu .
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(doi:10.1001/jamanetworkopen.2026.12601)
Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.
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