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Study of 28 Million Americans Links Air Pollution Directly to Alzheimer's
A nationwide study of 27.8 million older adults links fine particulate air pollution (PM2.5) to Alzheimer’s risk, mainly through direct brain effects rather than related health conditions.
- Emory University research team found long-term PM2.5 exposure is linked to higher Alzheimer's risk after analyzing health records of more than 27.8 million US citizens aged 65 and older in a PLOS Medicine study.
- To test whether particle pollution acted indirectly, the researchers designed the study to see whether PM2.5 raises Alzheimer's indirectly by causing high blood pressure, stroke or depression.
- The analysis showed PM2.5 exposure was linked to increased Alzheimer's risk mainly through direct pathways, and people who previously had a stroke faced slightly higher vulnerability among nearly 3 million Alzheimer's cases.
- Because disadvantaged communities face higher exposure, the study noted that individual choices cannot offset long-term effects and urged stricter air-quality standards to reduce Alzheimer’s risk.
- The authors cautioned that this observational study used estimated outdoor exposure at ZIP-code level and did not include indoor and workplace exposure; future research may focus on mechanistic investigations.
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Air pollution linked to higher risk of developing Alzheimer's disease
People with greater exposure to air pollution face a higher risk of developing Alzheimer's disease, according to a new study by Yanling Deng of Emory University, U.S.A., and colleagues, published February 17th in the open-access journal PLOS Medicine.
·United States
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Total News Sources34
Leaning Left4Leaning Right2Center9Last UpdatedBias Distribution60% Center
Bias Distribution
- 60% of the sources are Center
60% Center
L 27%
C 60%
13%
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