Tobacco.org

• Tobacco smoke exposure does not increase breast cancer risk 

Exposure to tobacco smoke during childhood or as an adult does not increase the risk for developing breast cancer among women who have never smoked, a large prospective study has shown.

The researchers claim that previous positive findings from retrospective studies suggesting such a link have been distorted by the fact that women were more likely to report past exposures because they knew that they had breast cancer. . . .

As reported in the International Journal of Epidemiology, women who were exposed to passive smoke as children were at no greater risk for developing breast cancer than those who were not exposed (adjusted relative risk [RR]=0.98), nor were women who were exposed as adults (RR=1.02).

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