Environmental Exposures and Dementia Risk
Author Information
Author(s): Williams, Trane, Sicinski, Herd, Engleman, Asthana
Primary Institution: University of Wisconsin Madison
Hypothesis
How do mid-life and late-life environmental exposures affect dementia risk, particularly in relation to ApoE-4 status?
Conclusion
ApoE-4 status influences the relationship between environmental exposures and dementia risk, with different effects based on the timing of exposure.
Supporting Evidence
- Mid-life occupational exposure was associated with 1.64 times greater odds of all-cause dementia among ApoE-4 noncarriers.
- Late-life air pollution exposure increased dementia risk only in ApoE-4 carriers.
- ApoE-4 appears protective against the adverse effects of hazardous respiratory exposures in mid-life.
Takeaway
Breathing bad air when you're older can make you more likely to get dementia, especially if you have a certain gene, while exposure to harmful work conditions in middle age affects those without that gene.
Methodology
The study used prospective life course data from the Wisconsin Longitudinal Study to evaluate the effects of occupational and air pollution exposures on dementia risk.
Participant Demographics
Participants were from the Wisconsin Longitudinal Study, with a focus on mid-life and late-life exposures.
Digital Object Identifier (DOI)
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