Related Experiment Videos
Smoking cessation and renal cell carcinoma
Alexander S Parker1, James R Cerhan, Carol A Janney
1Department of Health Sciences Research, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA. parker.alexander@mayo.edu
Annals of Epidemiology
|April 10, 2003
Summary
Quitting smoking significantly reduces renal cell carcinoma (RCC) risk. The benefit becomes substantial, approximately 50%, only after 30 years of smoking cessation.
Area of Science:
- Epidemiology
- Oncology
- Public Health
Background:
- Smoking is a leading cause of cancer.
- The specific impact of smoking cessation on renal cell carcinoma (RCC) risk requires further characterization.
- Previous studies had limitations including unstable risk estimates and broad exposure categories.
Purpose of the Study:
- To quantify the magnitude and timing of RCC risk reduction following smoking cessation.
- To address limitations of prior research by using detailed exposure data and adjusting for confounders.
Main Methods:
- A population-based case-control study in Iowa (1986-1989).
- 387 RCC cases and 2,333 controls were recruited.
- Data collected via mailed questionnaires on smoking history and other risk factors.
Main Results:
- A consistent inverse linear trend was observed between years of smoking cessation and RCC risk.
- Quitting smoking for >=30 years was associated with a 50% RCC risk reduction (OR=0.5).
- Risk reduction was less pronounced (20-30%) for cessation periods less than 30 years.
Conclusions:
- Smoking cessation is associated with a linear decrease in RCC risk.
- Significant risk reduction for RCC may require over 20 years of smoking cessation.
- Findings highlight the long-term benefits of quitting smoking for kidney cancer prevention.