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flag Long-term exposure to air pollution, even at low levels, increases risk and speeds progression of motor neurone disease, according to a new study.

flag A new study in JAMA Neurology links long-term exposure to air pollution—even at low levels typical of Sweden—to a 20–30% higher risk of motor neurone disease (MND), including ALS, and faster disease progression. flag Analyzing data from over 10,000 individuals, researchers found that exposure to pollutants like PM2.5, PM10, and nitrogen dioxide near homes up to ten years before diagnosis was associated with increased risk, earlier need for respiratory support, and higher mortality. flag The connection remained after accounting for genetics and shared environments, suggesting local traffic-related pollution may play a key role. flag While the study cannot prove causation, it adds to evidence that air pollution harms neurological health and underscores the importance of cleaner air for disease prevention.

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