Breast Cancer Home>Addictions>Substance_Abuse>Tobacco>Secondhand_Smoke>Health_Risks>Breast Cancer     Web Pages Secondhand Smoke -- Dr. Greene.com Report on 1996 study: "the relative risk for breast cancer from passive smoke (primarily girls whose parent smoked or women whose spouse smoked) was 3.2! This makes passive smoking a more important risk factor than having a mother with breast cancer (2.1), or having an early first period (1.3), or having a late first pregnancy (1.4)." Breast Cancer, Breast Feeding, and Tobacco Smoke Early studies treated secondhand smokers as if they were nonsmokers, which actually masked the evidence; later studies separated out the two, and found that both active and passive smoking are causes of breast cancer. Health Canada - Breast cancer linked to second-hand smoke Summary of recent research based on data from 1994-1997. Ask the Expert: Breast Cancer and Secondhand Smoke Summarizes the research findings on tobacco smoke as a cause of breast cancer. Is There An Association Between Passive Smoking and Breast Cancer? Scientific article; meta-analysis of 11 studies estimates a 40% higher risk of breast cancer as a result of exposure to secondhand smoke. Active and Passive Cigarette Smoking and Breast Cancer Recent studies may explain inconsistencies between previous results, say researchers, and a real risk may be emerging. Health Effects of Secondhand Smoke: Breast Cancer Characterizes the risk and provides a bibliography of research establishing the risk.