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Traffic-related air pollution is increasingly shown to have negative health effects according to a growing body of epidemiologic evidence and is a substantial public health concern in Canada, argues a commentary published in CMAJ (Canadian Medical Association Journal).
Despite generally good air quality in Canadian cities, approximately 21 000 people die prematurely from air pollution each year in Canada, about 9-fold more than the number killed in traffic accidents. About 10 million people - 32% of the population of Canada - live within 500 m of highways or 100 m from major urban roads, areas in which they are exposed to elevated levels of traffic-related air pollution.
"This high prevalence of exposure, in addition to evidence of associated health problems, suggests that traffic-related air pollution is a substantial public health concern in Canada," writes Michael Brauer, School of Population and Public Health, University of British Columbia (UBC), Vancouver, BC, with coauthors.
The authors highlight four overlapping strategies with short- and long-term options to help mitigate the effects of traffic-related air pollution:
The authors cite growing evidence that indicates that these types of interventions are successful. For example, the introduction of a fee for drivers to enter a "congestion charge zone" in London, UK, reduced traffic volume and congestion that resulted in "an estimated gain of 183 years of life per 100 000 residents within the zone over a 10-year period."
"Although these interventions alone benefit health, combining strategies can result in more cost-effective policies and greater improvements to population health," the authors conclude.
Authors: Michael Brauer ScD, Conor Reynolds PhD, Perry Hystad PhD
CMAJ 2013. DOI:10.1503/cmaj.121568
Article adapted by Medical News Today from original press release. Click 'references' tab above for source.
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4 Dec. 2013. <http://www.medicalnewstoday.com/releases/267637>
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