Updated: Mon, 10/07/2024 - 21:42

From Saturday, Oct. 5 through Tuesday, Oct. 8, the Downtown and Macdonald Campuses will be open only to McGill students, employees and essential visitors. Many classes will be held online. Remote work required where possible. See Campus Public Safety website for details.


Du samedi 5 octobre au mardi 8 octobre, le campus du centre-ville et le campus Macdonald ne seront accessibles qu’aux étudiants et aux membres du personnel de l’Université McGill, ainsi qu’aux visiteurs essentiels. De nombreux cours auront lieu en ligne. Le personnel devra travailler à distance, si possible. Voir le site Web de la Direction de la protection et de la prévention pour plus de détails.

News

Possible link between air pollution and breast cancer

Published: 5 December 2014

Following a previous study in Montreal published in 2010, these researchers investigated air pollution in eight Canadian provinces, from 1975 to 1994, based on satellite observations and on-ground measurements of NO2.

Led by Perry Hystad (Oregon State University) and Paul J. Villeneuve (Carleton University), the study shows an association between the risk of breast cancer and nitrogen dioxide (NO2), a marker of traffic-related air pollution. For post-menopausal women, the risk increased by 10% for each increase of 10 parts per billion (ppb) of NO2. Little was known about the risk for premenopausal women and air pollution and the investigators found it was even greater: the risk increased by 32% for every additional 10 ppb of NO2.

“Air pollution is a complex mixture comprising hundreds of chemicals, some of which are toxic or carcinogenic,” says co-author Mark Goldberg, an environmental epidemiologist at McGill University.  “NO2 is not carcinogenic, in itself, but it is an excellent marker for traffic-related air pollution.

“This study estimates the association between air pollution and breast cancer, but causality is far from established,” Goldberg cautions. “Many more studies would be needed in order for us to be able to make causal judgments.”

Exposure to traffic-related air pollution and the risk of developing breast cancer among women in eight Canadian provinces: A case–control study
http://www.sciencedirect.com/science/article/pii/S0160412014002712
Perry Hystad, Paul J. Villeneuve, Mark S. Goldberg, Dan L. Crouse, Kenneth Johnson, the Canadian Cancer Registries Epidemiology Research Group
Environment International Volume 74, January 2015

Picture credit: Osvaldo Gago - fotografar.net

Back to top