A study by the University of Pennsylvania has found a link between long-term exposure to fine particulate matter (PM2.5) and the progression of dementia and Alzheimer's disease. Research findings Air pollution more harmful than tobacco for brain health The study also revealed that nearly two-thirds of the pollution-dementia link could be attributed to Alzheimer's-related brain changes. In India, doctors are seeing the devastating effects of air pollution on brain health firsthand. Dr Manjari Tripathi from AIIMS warned that air pollution might be even more harmful than tobacco for brain health, linking it to neurological disorders like stroke and dementia. To reduce the risk of developing dementia and Alzheimer's disease due to air pollution, experts recommend wearing N95-grade masks outdoors, using air purifiers indoors, and minimizing exposure to dusty environments.