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  • Maurizio Trevisan, MD
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  • Maurizio Trevisan, MD
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Dietary fats and all-cause and breast cancer–specific mortality among women with breast cancer: The Western New York Exposures and Breast Cancer Study

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Dietary Fats and All-cause and Breast Cancer–specific Mortality among Women with Breast Cancer_ The Western New York Exposures and Breast Cancer Study.pdf (201.7Kb)
Date
2023-06
Author
Meyer, Danielle S.
Millen, Amy E.
Nie, Jing
Trevisan, Maurizio
Freudenheim, Jo L.
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Abstract
Background: Study results of prediagnostic dietary fat intake and breast cancer mortality have been inconclusive. While dietary fat subtypes [saturated (SFA), polyunsaturated (PUFA), and mono-unsaturated (MUFA) fatty acids] may have different biological effects, there is little evidence regarding the association of dietary fat and fat subtype intake with mortality after breast cancer diagnosis. Methods: Women with incident, pathologically confirmed invasive breast cancer and complete dietary data (n = 793) were followed in a population-based study, the Western New York Exposures and Breast Cancer study. Usual intake before diagnosis of total fat and subtypes were estimated from a food frequency questionnaire completed at baseline. HRs and 95% confidence intervals (CI) for all-cause and breast cancer–specific mortality were estimated with Cox proportional hazards models. Interactions by menopausal status, estrogen receptor (ER) status, and tumor stage were examined. Results: Median follow-up time was 18.75 years; 327 (41.2%) participants had died. Compared with lower intake, greater intake of total fat (HR, 1.05; 95% CI, 0.65–1.70), SFA (1.31; 0.82–2.10), MUFA (0.99; 0.61–1.60), and PUFA (0.99; 0.56–1.75) was not associated with breast cancer–specific mortality. There was also no association with all-cause mortality. Results did not vary by menopausal status, ER status, or tumor stage. Conclusions: Prediagnostic intake of dietary fat and fat subtypes was not associated with either all-cause or breast cancer mortality in a population-based cohort of breast cancer survivors. Impact: Understanding factors affecting survival among women diagnosed with breast cancer is critically important. Dietary fat intake prior to diagnosis may not impact that survival.
URI
https://vinspace.edu.vn/handle/VIN/273
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