4.5 Article

Association between dietary fat and fat subtypes with the risk of breast cancer in an Iranian population: a case-control study

期刊

LIPIDS IN HEALTH AND DISEASE
卷 20, 期 1, 页码 -

出版社

BMC
DOI: 10.1186/s12944-021-01557-y

关键词

Fatty acids; Dietary fat; Polyunsaturated fatty acid; Animal fat saturated fatty acid; Monounsaturated fatty acid; Breast cancer; Neoplasms; Postmenopausal; Premenopausal

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The study indicates that a high-fat diet may increase the risk of breast cancer, especially in postmenopausal women. Individuals with high intake of animal fat and polyunsaturated fatty acids are more likely to develop BC, but there is no association in premenopausal women.
Aim To examine the relationship between dietary fat intake and breast cancer (BC) development. Method This case-control study included 473 women with breast cancer (pathologically confirmed) and 501 healthy subjects matched by age and residency. Dietary intakes of different types and sources of fatty acids were assessed using a validated food frequency questionnaire. The association between dietary fats and odds of BC was assessed using a logistic regression model in crude and multivariable-adjusted models. P values below 0.05 were regarded as statistically significant. Results Participants' age and body mass index were 44.0 +/- 10.8 years and 28.4 +/- 5.6 kg/m(2), respectively. Individuals with the highest quartile of total fat intake and polyunsaturated fatty acid (PUFA) intake were 1.50 times more at risk to develop BC than others. A positive significant association was observed between animal fat (Q4 vs. Q1, OR = 1.89, 95 % CI = 0.93-3.81), saturated fatty acid (SFA) (Q4 vs. Q1, OR = 1.70, 95 % CI = 0.88-3.30), monounsaturated fatty acid (MUFA) (Q4 vs. Q1 OR = 1.85, 95 % CI = 0.95-3.61) and PUFA intake (Q4 vs. Q1, OR = 2.12, 95 % CI = 1.05-4.27) with BC risk in postmenopausal women. However, there was no association in premenopausal women. Conclusions Total dietary fat and its subtypes might increase the risk of BC, especially in postmenopausal women. This observational study confirms the role of dietary fat in breast cancer development. Intervention studies involving different estrogen receptor subgroups are needed.

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