Dietary patterns related to biological mechanisms and survival after breast cancer diagnosis: results from a cohort study
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Nature
Fecha
2023-02-03Referencia bibliográfica
Castro-Espin, C... [et al.]. Dietary patterns related to biological mechanisms and survival after breast cancer diagnosis: results from a cohort study. Br J Cancer (2023). [https://doi.org/10.1038/s41416-023-02169-2]
Patrocinador
Instituto de Salud Carlos III FI19/00197; European Social Fund (ESF); AECC Scientific Foundation PRYES211366AGUD; World Health Organization; Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London; Danish Cancer Society; Ligue nationale contre le cancer; Institut Gustave Roussy; Mutuelle Generale de l'Education Nationale; Institut National de la Sante et de la Recherche Medicale (Inserm); Deutsche Krebshilfe Helmholtz Association German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE) Federal Ministry of Education & Research (BMBF); Fondazione AIRC per la ricerca sul cancro Compagnia di San Paolo Consiglio Nazionale delle Ricerche (CNR); Dutch Ministry of Public Health, Welfare and Sports (VWS) Netherlands Cancer Registry (NKR); LK Research Funds; Dutch Prevention Funds Netherlands Organization for Scientific Research (NWO); World Cancer Research Fund International (WCRF); Netherlands Government; Health Research Fund (FIS)-Instituto de Salud Carlos III (ISCIII); Regional Governments of Andalucia, Asturias, Basque Country, Murcia and Navarra Navarra; Catalan Institute of Oncology-ICO (Spain); Swedish Cancer Society Swedish Research Council; County Councils of Skkne; Vasterbotten (Sweden); Cancer Research UK 14136 C8221/A29017; UK Research & Innovation (UKRI); Medical Research Council UK (MRC) 1000143 MR/M012190/1Resumen
BACKGROUND: Inflammatory, insulin and oestrogenic pathways have been linked to breast cancer (BC). We aimed to examine the
relationship between pre-diagnostic dietary patterns related to these mechanisms and BC survival.
METHODS: The diabetes risk reduction diet (DRRD), inflammatory score of diet (ISD) and oestrogen-related dietary pattern (ERDP)
were calculated using dietary data from the European Prospective Investigation into Cancer and Nutrition (EPIC) study. Cox
proportional hazards models were used to assess associations between dietary patterns and overall mortality and competing risk
models for associations with BC-specific mortality.
RESULTS: We included 13,270 BC cases with a mean follow-up after diagnosis of 8.6 years, representing 2340 total deaths,
including 1475 BC deaths. Higher adherence to the DRRD score was associated with lower overall mortality (HR1–SD 0.92; 95%CI
0.87–0.96). Greater adherence to pro-inflammatory diets was borderline associated with 6% higher mortality HR1–SD 1.06; 95%CI
1.00–1.12. No significant association with the oestrogen-related dietary pattern was observed. None of the dietary patterns were
associated with BC-specific mortality.
CONCLUSIONS: Greater adherence to an anti-diabetic and anti-inflammatory diet prior to diagnosis is associated with lower overall
mortality among BC survivors. Long-term adherence to these dietary patterns could be a means to improve the prognosis of BC
survivors.