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There are inconsistent and limited data available to assess the relationship between fat intake and risk of epithelial ovarian cancer (EOC). We examined the consumption of total fat, fat sources and fat subtypes in relation to risk of EOC and its major histologic subtypes in the European Prospective Investigation into Cancer and Nutrition which includes incident invasive (n=1095) and borderline (n=96) EOC. Cox proportional hazards regression was used to estimate hazard ratios (HRs) and 95% confidence intervals (CIs). In multivariate models, we observed no association with consumption of total fat, animal or plant fat, saturated fat, cholesterol, monounsaturated fat, or fatty fish and risk of invasive EOC. There was, however, an increased risk of invasive EOC in the highest category of intake (Quartile 4 vs. Quartile 1) of polyunsaturated fat (HR=1.22, 95% CI=1.02-1.48, P(trend)=0.02). We did not observe heterogeneity in the risk associations in comparisons of serous and endometrioid histologic subtypes. This study does not support an etiological role for total fat intake in relation to EOC risk; however, based on observations of a positive association between intake of polyunsaturated fat and invasive EOC risk in the current and previous studies, this fat subtype warrants further investigation to determine its potential role in EOC development.

Original publication

DOI

10.1016/j.canep.2014.07.011

Type

Journal article

Journal

Cancer Epidemiol

Publication Date

10/2014

Volume

38

Pages

528 - 537

Keywords

Dietary fats, Ovarian cancer, Serous neoplasms, Unsaturated dietary fats, Adult, Carcinoma, Ovarian Epithelial, Dietary Fats, Dietary Fats, Unsaturated, Female, Follow-Up Studies, Humans, Middle Aged, Multivariate Analysis, Neoplasms, Glandular and Epithelial, Ovarian Neoplasms, Proportional Hazards Models, Prospective Studies, Risk