A new study has found that air pollution in major Canadian cities is linked to poorer brain health, raising concerns about the long-term cognitive impacts of poor air quality. Lead author Sandi Azab presented the findings, which show a correlation between exposure to pollutants and reduced cognitive function.
Study highlights
The research, conducted across several urban centers, analyzed data from thousands of participants. It found that individuals living in areas with higher levels of air pollution scored lower on cognitive tests, particularly in memory and executive function. The study controlled for factors such as age, income, and education.
Implications for public health
These findings add to a growing body of evidence linking air quality to neurological health. Experts emphasize the need for stricter regulations on emissions and greater public awareness. "This is a wake-up call for policymakers," Azab said. "We need to prioritize clean air to protect our cognitive well-being."
Regional differences
The study noted variations among cities, with those experiencing higher traffic congestion and industrial activity showing stronger associations. Toronto and Vancouver were among the cities with notable effects, though researchers stress that no urban area is immune.
The research team plans to expand the study to include rural areas and examine the long-term trajectory of cognitive decline in relation to pollution exposure. In the meantime, they recommend using air purifiers and limiting outdoor activity during high-pollution days.
