New research suggests that increased exposure to wildfire smoke is associated with a higher risk of dementia. Wildfires are becoming more frequent and intense due to climate change, leading to increased exposure to smoke and potential health risks. The tiny particles in wildfire smoke can negatively impact brain health, raising the risk of dementia, cognitive challenges, and mental health issues. A study presented at the Alzheimer’s Association International Conference found that increased exposure to fine particulate matter from wildfire smoke was associated with a higher risk of dementia diagnosis in older adults. Exposure to wildfire smoke has also been linked to cognitive decline, reduced test scores, and increased emergency department visits for anxiety.
Scientists believe that wildfire smoke affects the brain by causing inflammation in the central nervous system and potentially traveling directly to the brain. While the exact threshold at which wildfire smoke poses a risk for dementia is unknown, evidence suggests that chronic exposure to smoke can contribute to cognitive decline. Other health consequences of wildfire smoke include an increased risk of asthma, stroke, heart attack, lung cancer, and low birth weight in newborns.
Experts recommend that individuals in areas with high levels of air pollution from wildfires avoid outdoor activities, close windows, use indoor air filters, and wear an N95 mask when going outside to reduce exposure to smoke. Overall, the increasing frequency of extreme wildfires underscores the importance of understanding and addressing the potential health impacts of wildfire smoke.
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