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Dietary folate intake, alcohol, and risk of breast cancer in a prospective study of postmenopausal women.
Epidemiology. 2001 Jul; 12(4):420-8.E

Abstract

Low B-vitamin intake may increase risk of breast cancer through decreased DNA repair capacity. Alcohol intake increases risk for breast cancer, with evidence from prospective studies of an interaction between alcohol and folate. We explored dietary intake of folate and other B vitamins with risk of breast cancer in a cohort study of 34,387 postmenopausal women. To measure diet, we mailed a food frequency questionnaire; we estimated nutrient intakes and categorized them into four levels: <10th, 11th-30th, 31st-50th, and >50th percentiles. Through 12 years of follow-up, we identified 1,586 cases of breast cancer in the cohort at risk. We estimated relative risks (RRs) and 95% confidence intervals (CIs) through Cox regression models adjusted for age, energy, and other risk factors. Women in the lowest 10th percentile of folate intake from diet alone were at modestly increased risk of breast cancer relative to those above the 50th percentile: RR = 1.21 (95% CI = 0.91--1.61). We examined the joint association of folate intake and alcohol use on risk of breast cancer, with the reference group defined as women with high folate (>50th percentile) and no alcohol use. The RRs of breast cancer associated with low dietary folate intake were 1.08 (95% CI = 0.78--1.49) among nondrinkers, 1.33 (95% CI = 0.86--2.05) among drinkers of < or = 4 gm per day, and 1.59 (95% CI = 1.05--2.41) among drinkers of > 4 gm per day. These results suggest that the risks of postmenopausal breast cancer may be increased among women with low intakes of folate if they consume alcohol-containing beverages.

Authors+Show Affiliations

Department of Health Sciences Research, Mayo Clinic, Rochester, MN 55905, USA.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

11416780

Citation

Sellers, T A., et al. "Dietary Folate Intake, Alcohol, and Risk of Breast Cancer in a Prospective Study of Postmenopausal Women." Epidemiology (Cambridge, Mass.), vol. 12, no. 4, 2001, pp. 420-8.
Sellers TA, Kushi LH, Cerhan JR, et al. Dietary folate intake, alcohol, and risk of breast cancer in a prospective study of postmenopausal women. Epidemiology. 2001;12(4):420-8.
Sellers, T. A., Kushi, L. H., Cerhan, J. R., Vierkant, R. A., Gapstur, S. M., Vachon, C. M., Olson, J. E., Therneau, T. M., & Folsom, A. R. (2001). Dietary folate intake, alcohol, and risk of breast cancer in a prospective study of postmenopausal women. Epidemiology (Cambridge, Mass.), 12(4), 420-8.
Sellers TA, et al. Dietary Folate Intake, Alcohol, and Risk of Breast Cancer in a Prospective Study of Postmenopausal Women. Epidemiology. 2001;12(4):420-8. PubMed PMID: 11416780.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Dietary folate intake, alcohol, and risk of breast cancer in a prospective study of postmenopausal women. AU - Sellers,T A, AU - Kushi,L H, AU - Cerhan,J R, AU - Vierkant,R A, AU - Gapstur,S M, AU - Vachon,C M, AU - Olson,J E, AU - Therneau,T M, AU - Folsom,A R, PY - 2001/6/21/pubmed PY - 2001/8/3/medline PY - 2001/6/21/entrez SP - 420 EP - 8 JF - Epidemiology (Cambridge, Mass.) JO - Epidemiology VL - 12 IS - 4 N2 - Low B-vitamin intake may increase risk of breast cancer through decreased DNA repair capacity. Alcohol intake increases risk for breast cancer, with evidence from prospective studies of an interaction between alcohol and folate. We explored dietary intake of folate and other B vitamins with risk of breast cancer in a cohort study of 34,387 postmenopausal women. To measure diet, we mailed a food frequency questionnaire; we estimated nutrient intakes and categorized them into four levels: <10th, 11th-30th, 31st-50th, and >50th percentiles. Through 12 years of follow-up, we identified 1,586 cases of breast cancer in the cohort at risk. We estimated relative risks (RRs) and 95% confidence intervals (CIs) through Cox regression models adjusted for age, energy, and other risk factors. Women in the lowest 10th percentile of folate intake from diet alone were at modestly increased risk of breast cancer relative to those above the 50th percentile: RR = 1.21 (95% CI = 0.91--1.61). We examined the joint association of folate intake and alcohol use on risk of breast cancer, with the reference group defined as women with high folate (>50th percentile) and no alcohol use. The RRs of breast cancer associated with low dietary folate intake were 1.08 (95% CI = 0.78--1.49) among nondrinkers, 1.33 (95% CI = 0.86--2.05) among drinkers of < or = 4 gm per day, and 1.59 (95% CI = 1.05--2.41) among drinkers of > 4 gm per day. These results suggest that the risks of postmenopausal breast cancer may be increased among women with low intakes of folate if they consume alcohol-containing beverages. SN - 1044-3983 UR - https://www.unboundmedicine.com/medline/citation/11416780/Dietary_folate_intake_alcohol_and_risk_of_breast_cancer_in_a_prospective_study_of_postmenopausal_women_ L2 - https://doi.org/10.1097/00001648-200107000-00012 DB - PRIME DP - Unbound Medicine ER -