Abstract
Objective
Growing evidence that ultrafine particles in ambient air can cause brain lesions in animals led us to investigate whether particulate components of air pollution may be associated with brain cancer risk in humans. Air pollution has been associated with respiratory disorders and cardiovascular morbidity and mortality, but associations between air pollutants and brain cancer have not been investigated in adults.
Methods
The analyses included 1,284 deaths due to brain cancer from the Cancer Prevention Study-II, an ongoing prospective mortality study of adults in the United States and Puerto Rico conducted by the American Cancer Society. Air pollution data from national databases for metropolitan areas were combined with residential history and vital status data to estimate exposure to particulate and gaseous air pollution.
Results
We found no elevated risk for estimated measures of air pollutants, an unanticipated reduction in risk was found between gaseous air pollutants and brain cancer mortality.
Conclusion
The findings do not provide evidence of increased risk of brain cancer mortality due to air pollutants.
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Financial support
Supported by funding from the NIEHS (grant number 5P30 ES07048) to the Southern California Environmental Health Science Center (SCEHSC) and The Brain Tumor and Air Pollution Foundation of the South Coast Air Quality Management District (AQMD) (grant number BTAP002) and the Ron Ross MD, Memorial Cancer Research Fund at the University of Southern California Norris Comprehensive Cancer Center.
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McKean-Cowdin, R., Calle, E.E., Peters, J.M. et al. Ambient air pollution and brain cancer mortality. Cancer Causes Control 20, 1645–1651 (2009). https://doi.org/10.1007/s10552-009-9412-1
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DOI: https://doi.org/10.1007/s10552-009-9412-1