Vegetable and Fruit Consumption and Risks of Colon and Rectal Cancer in a Prospective Cohort Study The Netherlands Cohort Study on Diet and Cancer
Open Access
- 1 December 2000
- journal article
- research article
- Published by Oxford University Press (OUP) in American Journal of Epidemiology
- Vol. 152 (11) , 1081-1092
- https://doi.org/10.1093/aje/152.11.1081
Abstract
The relation between vegetable and fruit consumption and colorectal cancer risk was comprehensively assessed in the Netherlands Cohort Study on Diet and Cancer using a validated 150-item food frequency questionnaire. After 6.3 years of follow-up (1986–1992), over 1,000 incident cases of colorectal cancer were registered. Using case-cohort analysis, the authors calculated rate ratios and 95% confidence intervals adjusted for age, alcohol intake, and family history of colorectal cancer. For colon cancer, no statistically significant associations with total vegetable intake or total fruit intake were found. However, among women, an inverse association was observed with vegetables and fruits combined (for the highest quintile vs. the lowest, the rate ratio was 0.66 (95% confidence interval: 0.44, 1.01)). Brassica vegetables and cooked leafy vegetables showed inverse associations for both men and women. Among women and, to a lesser extent, among men, inverse associations were stronger for distal colonic tumors than for proximal colonic tumors. For rectal cancer, no statistically significant associations were found for vegetable consumption or fruit consumption or for specific groups of vegetables and fruits; only Brassica vegetables showed a positive association in women. As in other cohort studies, the observed inverse relation between vegetable and fruit consumption and occurrence of colorectal cancer was less strong than relations reported in case-control studies.Keywords
This publication has 24 references indexed in Scilit:
- Dietary Fiber and the Risk of Colorectal Cancer and Adenoma in WomenNew England Journal of Medicine, 1999
- Dietary Risk Factors for Colon Cancer in a Low-risk PopulationAmerican Journal of Epidemiology, 1998
- Vegetables, Fruit, and Cancer PreventionJournal of the American Dietetic Association, 1996
- Dietary habits and mortality in 11 000 vegetarians and health conscious people: results of a 17 year follow upBMJ, 1996
- Intake of vegetables, fruits, beta-carotene, vitamin C and vitamin supplements and cancer incidence among the elderly: a prospective studyBritish Journal of Cancer, 1992
- Fruit, vegetables, and cancer prevention: A review of the epidemiological evidenceNutrition and Cancer, 1992
- Vegetables, fruit, and cancer. I. EpidemiologyCancer Causes & Control, 1991
- Relation of Meat, Fat, and Fiber Intake to the Risk of Colon Cancer in a Prospective Study among WomenNew England Journal of Medicine, 1990
- Dietary Fiber, Vegetables, and Colon Cancer: Critical Review and Meta-analyses of the Epidemiologic EvidenceJNCI Journal of the National Cancer Institute, 1990
- Diet and colorectal cancer with special reference to fiber intakeInternational Journal of Cancer, 1989