Millions of Canadians face increased mortality risks due to air pollution, even at the lowest levels of exposure to fine PM2.5, according to a new report.
Millions of Canadians face increased mortality risks due to air pollution, even at the lowest levels of exposure to fine particulate matter , according to a new report.were associated with an increased risk of death. Most national and international air quality standards have limits that are between two times and five times higher.
Overall, long-term outdoor PM2.5 exposure was associated with increased total nonaccidental deaths. An increase in exposure from the 25th percentile to the 75th percentile was associated with 32 more deaths per 100,000 people each year, or about 7848 more deaths every year.. At 5 μg/mand above, the relative risk increased linearly. The research team didn’t detect a low concentration where no health effects were observed — the positive association started at 2.
Brauer and colleagues are investigating why air pollution differed across Canada, including the impacts of specific chemical compounds and sources.
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