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过去10年来,共有20多篇关于吸烟与乳腺癌相关性的研究报告发表。有的研究结果表明,吸烟与乳腺癌之间呈负的相关关系,这些报告认为可能的原因是吸烟拮抗雌激素和降低绝经年龄。另一些研究发现两者之间具有正的相关性,并推测可能存在其它吸烟致乳腺癌的途径。两者的相关性在那些开始吸烟年龄较小的妇女中较强,估计与发育过程中的乳腺组织对致癌物较敏感有关。还有一些报告认为吸烟与乳腺癌之间没有联系。另据报导,被动吸烟与乳腺癌亦有联系。
Over the past 10 years, a total of more than 20 articles about smoking and breast cancer related research report published. Some studies have shown that there is a negative correlation between smoking and breast cancer, these reports suggest possible causes are smoking antagonism of estrogen and reduce the age of menopause. Other studies found a positive correlation between the two and speculated that there might be other ways of smoking-induced breast cancer. The correlation between the two is stronger among those younger who started smoking and is estimated to be more sensitive to carcinogens in breast tissue during development. There are some reports that there is no connection between smoking and breast cancer. According to another report, passive smoking and breast cancer are also linked.