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Cancers weakly related to smoking
1ICRF/MRC/BHF Clinical Trial Service Unit, Radcliffe Infirmary, Oxford, UK.
British Medical Bulletin
|January 1, 1996
Summary
Cigarette smoking is a significant cause of numerous cancers, including lung, stomach, liver, and myeloid leukemia. New evidence confirms smoking
Area of Science:
- Oncology
- Public Health
Background:
- The International Agency for Research on Cancer (IARC) previously identified cigarette smoking as a major cause of several cancers in 1985.
- Subsequent research has provided more evidence on the link between smoking and various cancers, including less common types.
Purpose of the Study:
- To review and update the evidence on the carcinogenic effects of tobacco smoking.
- To determine the causal relationship between smoking and a wider range of cancers.
Main Methods:
- Review of cohort studies for common cancers.
- Review of case-control studies for less common cancers.
- Synthesis of accumulated evidence on tobacco's carcinogenicity.
Main Results:
- Cigarette smoking is now established as a cause of stomach, renal body, liver, nose cancers, and myeloid leukemia.
- Evidence suggests cigarette smoking may also cause nasopharyngeal and lip cancers.
- Pipe smoking is identified as a cause of lip cancer.
- Associations between cigarette smoking and large bowel/cervix uteri cancers may be due to confounding factors.
Conclusions:
- The evidence strongly supports cigarette smoking as a cause of a broader spectrum of cancers than previously identified.
- Public health initiatives should continue to focus on smoking cessation to reduce cancer incidence.
- Further research may be needed to clarify the role of confounding in certain smoking-related cancer associations.