Cancer is not contagious like flu or chicken pox. You cannot “catch” cancer from someone who has it. Environmental factors play an important role in the development of certain cancers.
Cancer causing factorsAssociated with cancer of the:Smoking 吸烟Lung, mouth, throat & othersChewing tobacco or betel nuts 咀嚼烟草MouthHeavy drinking or alcohol 大量喝酒Mouth, throat, liver, stomachHigh fat diet 高脂肪食物Colon, breastIndustrial chemicals e.g. asbestos 工业污染（高污染工作环境）LungIonising radiation 离子辐射Leukaemia, thyroid, breastSunlight 阳光SkinViruses 细菌Liver, Cervix相应的具体癌症翻译，请参照 http://bbs.sgchinese.com/viewthread.php?tid=2299969&extra=&page=1
Cancer need not be fatal 癌症不等于死刑
Fact: 1/3 of all cancers can be cured, if they are detected and treated early. Know the warning signs and go for regular checkups.
事实：如果早发现，早治疗，三分之一的癌症是可以被治愈得。 大家需要了解癌症的危险信号，每年做例行身体检查。
Another 1/3 of cancers can be prevented by avoiding certain risk factors through adopting healthy lifestyle habits.
如果采取适当的防范措施，还有三分之一的癌症其实是可以预防的
信息来源： http://www.singaporecancersociety.org.sg/index.shtml