Long-term exposure to air pollution and mammographic density in the Danish Diet, Cancer and Health cohort (15 page pdf, Stephanie Huynh, My von Euler-Chelpin,Ole Raaschou-Nielsen, Ole Hertel, Anne Tjønneland, Elsebeth Lynge, Ilse Vejborg, Zorana J Andersen, Environmental Health, Apr. 1, 2015)
Today we review research in Copenhagen, Denmark that looked at the link between exposure to NO2 from traffic-related air pollution over 10 years and mammographic density (MD) which has clear associations with breast cancer, the leading cause of death among women. Although breast cancer occurs more frequently in industrialized countries and both it and MD are higher in urban areas, a careful analysis revealed no convincing relation between MD and air pollution. As the authors noted, if there is a link with air pollution, it is via another pathway independent of MD.
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