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Coffee drinking and bladder cancer in Connecticut
American Journal of Epidemiology
|February 1, 1983
Summary
High coffee consumption, especially over seven cups weekly, is linked to increased bladder cancer risk in men. This association was observed even among male smokers and nonsmokers, suggesting a potential dose-response effect.
Area of Science:
- Epidemiology
- Oncology
- Public Health
Background:
- Bladder cancer is a significant public health concern.
- Understanding environmental and lifestyle risk factors is crucial for prevention.
- Coffee consumption is a widespread dietary habit with potential health implications.
Purpose of the Study:
- To investigate the association between coffee consumption and bladder cancer risk.
- To explore potential differences in risk based on gender, smoking status, and coffee type.
Main Methods:
- A population-based case-control study was conducted in Connecticut (1978-1979).
- Data collected included coffee consumption (cups per week, duration, type) and smoking history.
- Statistical analyses adjusted for age and cigarette smoking.
Main Results:
- Males consuming >7 cups of coffee weekly showed a significantly elevated bladder cancer risk (OR=1.5).
- A dose-response relationship was suggested in males.
- Nonsmokers consuming >7 cups weekly had an odds ratio of 1.9.
- Elevated risks were associated with regular (non-decaffeinated) and ground (non-instant) coffee in males.
- Female smokers exhibited a decreased risk, potentially due to a resistant subgroup of older smokers.
Conclusions:
- High coffee consumption may increase bladder cancer risk in men.
- The type of coffee (regular, ground) might influence risk in males.
- Further research is warranted to elucidate the complex relationship between coffee, smoking, and bladder cancer, particularly in women.
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