Disagreement on Alcohol and Cancer Risk
Author Information
Author(s): William J. Waddell, Joseph F. Borzelleca, John Doull, Paul Grasso, Bernard LeBourhis, Paul S. Levy, Carlo H. Tamburro
Hypothesis
Is alcohol consumption a carcinogen?
Conclusion
The evidence does not support the claim that alcohol is a carcinogen at all sites.
Supporting Evidence
- Animal studies have failed to show that ethanol is carcinogenic.
- Epidemiological studies found no convincing association between alcohol and several types of cancer.
- Some studies suggest a 'J'-shaped dose-response curve for alcohol and cancer risk.
- Confounding factors like smoking and diet complicate the interpretation of alcohol's effects on cancer.
Takeaway
Some scientists believe that drinking alcohol doesn't cause cancer, and the studies showing a link might be confusing.
Methodology
The authors reviewed epidemiological studies and discussed the limitations of existing research.
Potential Biases
There is a risk of bias due to the combining of drinkers and nondrinkers in some studies.
Limitations
Many studies are confounded by factors like smoking and diet, making it hard to draw clear conclusions.
Participant Demographics
The studies discussed included both smokers and nonsmokers, with a focus on various demographics.
Want to read the original?
Access the complete publication on the publisher's website