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Dietary calcium and vitamin D intake and risk of colorectal cancer: a prospective cohort study in women.
Nutr Cancer 2002; 43(1):39-46NC

Abstract

Although laboratory data and a few adenoma prevention trials suggest that calcium supplementation may reduce the risk of colorectal neoplasia, the results of observational studies of calcium intake and colorectal cancer risk are contradictory. However, few studies have examined the association among women or effects in specific colon subsites. Women with colorectal cancer diagnosed through 31 December 2000 were identified by linkage to regional cancer registries. During an average 11.3 yr of follow-up of 61,463 women, we observed 572 incident cases of colorectal cancer. Using data obtained from a 67-item food frequency questionnaire and Cox proportional hazards models to estimate rate ratios and 95% confidence intervals, we found an inverse association between dietary calcium intake and colorectal cancer risk. Women with the highest calcium intake (median 914 mg/day) had a reduced risk of colorectal cancer (rate ratio = 0.72, 95% confidence interval = 0.056-0.93, P for trend = 0.02) compared with women with the lowest intake (median 486 mg/day). Furthermore, our results suggest that the inverse association may be strongest in relation to distal cancers and among older women. The association with dairy products was less clear, suggesting that calcium intake per se is more important than specific calcium sources. Vitamin D intake was not clearly associated with risk. In sum, our data suggest that high calcium intake may lower colorectal cancer risk.

Authors+Show Affiliations

Department of Medical Epidemiology, Karolinska Institutet, Stockholm, Sweden. pterry@aecom.yu.eduNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

12467133

Citation

Terry, Paul, et al. "Dietary Calcium and Vitamin D Intake and Risk of Colorectal Cancer: a Prospective Cohort Study in Women." Nutrition and Cancer, vol. 43, no. 1, 2002, pp. 39-46.
Terry P, Baron JA, Bergkvist L, et al. Dietary calcium and vitamin D intake and risk of colorectal cancer: a prospective cohort study in women. Nutr Cancer. 2002;43(1):39-46.
Terry, P., Baron, J. A., Bergkvist, L., Holmberg, L., & Wolk, A. (2002). Dietary calcium and vitamin D intake and risk of colorectal cancer: a prospective cohort study in women. Nutrition and Cancer, 43(1), pp. 39-46.
Terry P, et al. Dietary Calcium and Vitamin D Intake and Risk of Colorectal Cancer: a Prospective Cohort Study in Women. Nutr Cancer. 2002;43(1):39-46. PubMed PMID: 12467133.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Dietary calcium and vitamin D intake and risk of colorectal cancer: a prospective cohort study in women. AU - Terry,Paul, AU - Baron,John A, AU - Bergkvist,Leif, AU - Holmberg,Lars, AU - Wolk,Alicja, PY - 2002/12/7/pubmed PY - 2003/7/17/medline PY - 2002/12/7/entrez SP - 39 EP - 46 JF - Nutrition and cancer JO - Nutr Cancer VL - 43 IS - 1 N2 - Although laboratory data and a few adenoma prevention trials suggest that calcium supplementation may reduce the risk of colorectal neoplasia, the results of observational studies of calcium intake and colorectal cancer risk are contradictory. However, few studies have examined the association among women or effects in specific colon subsites. Women with colorectal cancer diagnosed through 31 December 2000 were identified by linkage to regional cancer registries. During an average 11.3 yr of follow-up of 61,463 women, we observed 572 incident cases of colorectal cancer. Using data obtained from a 67-item food frequency questionnaire and Cox proportional hazards models to estimate rate ratios and 95% confidence intervals, we found an inverse association between dietary calcium intake and colorectal cancer risk. Women with the highest calcium intake (median 914 mg/day) had a reduced risk of colorectal cancer (rate ratio = 0.72, 95% confidence interval = 0.056-0.93, P for trend = 0.02) compared with women with the lowest intake (median 486 mg/day). Furthermore, our results suggest that the inverse association may be strongest in relation to distal cancers and among older women. The association with dairy products was less clear, suggesting that calcium intake per se is more important than specific calcium sources. Vitamin D intake was not clearly associated with risk. In sum, our data suggest that high calcium intake may lower colorectal cancer risk. SN - 0163-5581 UR - https://www.unboundmedicine.com/medline/citation/12467133/Dietary_calcium_and_vitamin_D_intake_and_risk_of_colorectal_cancer:_a_prospective_cohort_study_in_women_ L2 - http://www.tandfonline.com/doi/full/10.1207/S15327914NC431_4 DB - PRIME DP - Unbound Medicine ER -