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Exposure to secondhand cigarette smoke over a lifetime increased breast cancer risk later in life
Date:12/2/2009

their risk.

Women exposed to moderate to high levels for a combination of years and intensity of exposure had a significant dose response so that the risks for developing breast cancer increased as the cumulative exposure levels increased, according to Reynolds.

"We were initially surprised not to see much effect individually for exposure in household, workplace or social settings," she said. "It does make sense though, if there is an effect for higher levels of exposure, the sum of exposures across settings would be more important than only partial measures of exposure."

Based on these findings, Reynolds suggested that more research is needed to better assess overall exposure patterns. From a public health point of view, these results provide additional evidence for health risks from exposure to secondhand smoke.


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Contact: Tara Yates
tara.yates@aacr.org
267-646-0558
American Association for Cancer Research
Source:Eurekalert  

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