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High adherence to Western dietary pattern increases breast cancer risk (an EPIC-Spain study)

To explore the association between three previously identified and validated dietary patterns (Western, Prudent and Mediterranean) and breast cancer risk by tumour subtype and menopausal status. Data from the Spanish cohort of the European Prospective Investigation into Cancer and Nutrition study pr...

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Bibliographic Details
Published in:Maturitas 2024-01, Vol.179, p.107868-107868, Article 107868
Main Authors: Castelló, Adela, Rodríguez-Barranco, Miguel, Lope, Virginia, Guevara, Marcela, Colorado-Yohar, Sandra, Dorronsoro, Ane, Quirós, José Ramón, Castro-Espin, Carlota, Sayon-Orea, Carmen, Santiuste, Carmen, Amiano, Pilar, Lasheras, Cristina, Sanchez, María-José, Pollán, Marina
Format: Article
Language:English
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Summary:To explore the association between three previously identified and validated dietary patterns (Western, Prudent and Mediterranean) and breast cancer risk by tumour subtype and menopausal status. Data from the Spanish cohort of the European Prospective Investigation into Cancer and Nutrition study provided epidemiological information (including diet and cancer incidence) from 24,892 women (639 breast cancer cases) recruited between 1992 and 1996. The associations between adherence to the three dietary patterns and breast cancer risk (overall and by tumour subtype) were explored by fitting multivariate Cox proportional hazards regression models stratified by region, among other variables. A possible interaction with menopausal status (changing over time) was explored. No clear association of the Prudent and Mediterranean dietary patterns with breast cancer risk was found. When compared with women with a level of adherence to the Western diet in the first quartile, women with a level of adherence in the third (hazard ratio (95 % confidence interval) (HR(95%CI)):1.37 (1.07;1.77)) and fourth quartiles (1.37 (1.03;1.83)); p for curvature of splines = 0.016) showed a non-linear increased risk, especially postmenopausal women (HR (95 % CI) 1.30 (0.98;1.72) in the third and 1.42 (1.04;1.94) in the fourth quartiles; p for curvature of splines = 0.081) and for estrogen or progesterone receptor positive with human epidermal growth factor receptor 2 negative tumours (HR (95 % CI) 1.62 (1.10;2.38) and 1.71 (1.11;2.63) for the third and fourth quartiles respectively; p for curvature of splines = 0.013). Intake of foods such as high-fat dairy products, red and processed meats, refined grains, sweets, caloric drinks, convenience food and sauces might be associated with a higher risk of breast cancer.
ISSN:0378-5122
1873-4111
DOI:10.1016/j.maturitas.2023.107868