TY - JOUR
T1 - Association of folate and alcohol with risk of ovarian cancer in a prospective study of postmenopausal women
AU - Kelemen, Linda E.
AU - Sellers, Thomas A.
AU - Vierkant, Robert A.
AU - Harnack, Lisa
AU - Cerhan, James R.
N1 - Funding Information:
The Iowa Women’s Health Study was funded by grant R01 CA39742 and L.E. Kelemen was supported by a Mayo Clinic genetic epidemiology training grant R25 CA92049, both from the National Cancer Institute. The contents of this manuscript are solely the responsibilities of the authors and do not necessarily represent the official view of the National Cancer Institute.
PY - 2004
Y1 - 2004
N2 - Studies evaluating the association of ovarian cancer with alcohol intake are inconsistent, and few have evaluated this association in the context of folate consumption. Dietary folate and alcohol intakes and lifestyle and medical information were collected with self-administered questionnaires in 1986 from postmenopausal women aged 55-69 followed prospectively for 15 years for risk of epithelial ovarian cancer in the Iowa Women's Health Study. Among 27,205 eligible women free of baseline cancer, 147 incident epithelial ovarian cancer cases were identified by linkage to a cancer registry. Compared to the lowest quartile of total folate (food plus supplement) intake, the multivariable risk ratios (RR) for increasing quartiles were 1.0 (referent), 1.59, 1.24, 1.73 (95% confidence interval [CI], 0.90-3.33; p for trend, 0.20). Compared to non-drinkers, the RRs for increasing alcohol intake were 1.0 (referent), 0.78 for 0.01-3.9 g/d, 0.75 for 4.0-9.9 g/d and 0.58 for ≥10 g/d (95% CI, 0.30-1.11; p for trend, 0.08). Among women with alcohol intake ≥4 g/d compared to <4 g/d, the apparent risk reduction was limited to those with total folate intake ≥331 μg/d (RR, 0.52; 95% CI, 0.22-1.19; p for interaction, 0.04) although this estimate was based on only seven cases. The association did not change appreciably when we excluded tumors of mucinous histology. These findings suggest that alcohol consumption is inversely related to postmenopausal ovarian cancer, and that the association of folate with ovarian cancer may vary by the amount of alcohol consumed.
AB - Studies evaluating the association of ovarian cancer with alcohol intake are inconsistent, and few have evaluated this association in the context of folate consumption. Dietary folate and alcohol intakes and lifestyle and medical information were collected with self-administered questionnaires in 1986 from postmenopausal women aged 55-69 followed prospectively for 15 years for risk of epithelial ovarian cancer in the Iowa Women's Health Study. Among 27,205 eligible women free of baseline cancer, 147 incident epithelial ovarian cancer cases were identified by linkage to a cancer registry. Compared to the lowest quartile of total folate (food plus supplement) intake, the multivariable risk ratios (RR) for increasing quartiles were 1.0 (referent), 1.59, 1.24, 1.73 (95% confidence interval [CI], 0.90-3.33; p for trend, 0.20). Compared to non-drinkers, the RRs for increasing alcohol intake were 1.0 (referent), 0.78 for 0.01-3.9 g/d, 0.75 for 4.0-9.9 g/d and 0.58 for ≥10 g/d (95% CI, 0.30-1.11; p for trend, 0.08). Among women with alcohol intake ≥4 g/d compared to <4 g/d, the apparent risk reduction was limited to those with total folate intake ≥331 μg/d (RR, 0.52; 95% CI, 0.22-1.19; p for interaction, 0.04) although this estimate was based on only seven cases. The association did not change appreciably when we excluded tumors of mucinous histology. These findings suggest that alcohol consumption is inversely related to postmenopausal ovarian cancer, and that the association of folate with ovarian cancer may vary by the amount of alcohol consumed.
KW - Ethanol
KW - Folic acid
KW - Ovarian neoplasms
KW - Prospective studies
KW - Women
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U2 - 10.1007/s10552-004-1546-6
DO - 10.1007/s10552-004-1546-6
M3 - Article
C2 - 15801492
AN - SCOPUS:17844393379
SN - 0957-5243
VL - 15
SP - 1085
EP - 1093
JO - Cancer Causes and Control
JF - Cancer Causes and Control
IS - 10
ER -