Lung cancer and vegetable consumption in Asturias, Spain. A case control study
Caicoya, Mín.
Medicina Clinica 119(6): 206-210
2002
ISSN/ISBN: 0025-7753 PMID: 12200007 Document Number: 548587
This hospital-based, case-control study was conducted to examine the relationship between lung cancer and vegetable consumption in Asturias, Spain. Cases (n=197) were newly diagnosed lung cancer patients, and controls (n=196) were patients from surgical wards. Dietary habits were determined using a food frequency questionnaire with one year recall time. Smoking status, occupational exposure, and demographic variables were also determined. Patients at the 80th percentile of cruciferous vegetable (i.e., cabbage, broccoli) consumption had half the risk of lung cancer (other than adenocarcinoma), as compared to those at the 20th percentile (odds ratio=0.47; 95% confidence interval, 0.23-0.95). However, when adjusting for smoking and social class, the association was no longer significant. A high vegetable, vitamin A or beta -carotene consumption was not associated with a lower risk of lung cancer.