Caygill C P
Commun Dis Rep CDR Rev. 1992 Jan 3;2(1):R7-9.
Environmental factors such as diet, industrial pollution, smoking and viruses account for some 80% of cancers and more than one-quarter of all non-accidental deaths. Little attention has been paid to the relationship between bacterial infection and cancer but there is growing evidence to support this link. For some sites, such as stomach and colorectum, the evidence is relatively strong, whereas for others, such as biliary tract and bladder, it is more circumstantial.
饮食、工业污染、吸烟和病毒等环境因素导致了约80%的癌症以及超过四分之一的非意外死亡。细菌感染与癌症之间的关系鲜受关注，但越来越多的证据支持这一联系。对于某些部位，如胃和结肠，证据相对确凿，而对于其他部位，如胆道和膀胱，证据则较为间接。
