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Wildfire Smoke Linked to Increased Dementia and Cognitive Risks, Studies Show. Emerging research indicates that wildfire smoke can harm brain health, increasing the risk of dementia, cognitive challenges, and mental health issues, NBC News reports. California, Oregon, and Montana are facing severe air pollution due to wildfires, affecting people both locally and at great distances. A study presented at the Alzheimer’s Association International Conference suggests that exposure to wildfire smoke significantly raises the risk of dementia. The study analyzed over 1.2 million older adults in Southern California, showing a 21% increased risk of dementia linked to fine particulate matter from wildfire smoke. Exposure to particulate matter from sources like traffic showed a smaller, 3% increase in dementia risk, highlighting the unique dangers of wildfire smoke. Dr. Holly Elser, a study author, noted that the specific threshold at which wildfire smoke poses a dementia risk remains unclear, calling for further research. A 2022 study found that recent exposure to wildfire smoke impaired cognitive functions like memory and attention, said researcher Stephanie Cleland. Research led by Marshall Burke from Stanford University found that students exposed to wildfire smoke had lower test scores, indicating widespread cognitive effects. Dr. Elser suggested that wildfire smoke might alter brain neurochemistry, contributing to increased rates of anxiety and depression. Experts recommend minimizing exposure to wildfire smoke by avoiding outdoor activities, using air filters, and wearing N95 masks during high pollution events to protect health.
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