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00925njm 22002777a 4500 dc Pachón Olmos, Vanessa author Pollan-Santamaria, Marina author Fernandez de Larrea-Baz, Nerea author Fernández-Morata, Julia author Ruiz Moreno, Emma author García-Pérez, Javier author Castelló Pastor, Adela author Sierra, Maria Angeles author de Lucas, Maria Pilar author Alonso Ledesma, Isabel author Stradella, Agostina author Cantos, Blanca author Ramón Y Cajal, Teresa author Santisteban, Marta author Seguí, Miguel Ángel author Santaballa Bertrán, Ana author Granja, Mónica author Camps-Herrero, Julia author Recalde, Sabela author Mendez, Miriam author Calvo Verges, Nuria author Perez-Gomez, Beatriz author Pastor-Barriuso, Roberto author Lope Carvajal, Virginia author 2025-02-19 Background/objectives: The 2018 World Cancer Research Fund/American Institute for Cancer Research (WCRF/AICR) cancer prevention recommendations benefit primary prevention and survivor outcomes. This study evaluated the adherence to these recommendations during the year prior to breast cancer diagnosis and identified related clinical and sociodemographic factors. Methods: A total of 915 patients with breast cancer were recruited from eight hospitals in four regions of Spain. The participants completed an epidemiologic questionnaire and a food frequency questionnaire. The compliance with the WCRF/AICR recommendations was assessed using a standardized score based on seven recommendations. Standardized prevalences and standardized prevalence ratios (SPRs) for moderate and high adherence were calculated based on participant characteristics using binary and multinomial logistic regression models. Results: The mean adherence was 3.5 points out of 7. The recommendations with the best and worst adherence were avoiding sugar-sweetened drinks (54.4% adherence) and maintaining a fiber-rich diet (4.4% consumed ≥30 g/day). The overall adherence was better in women aged ≥60 years (SPR = 1.55; 95% CI = 1.09-2.22), and worse in those with a caloric intake ≥2000 kcal/day (SPR = 0.48; 95% CI = 0.37-0.62) or ≥2 comorbidities (SPR = 0.66; 95% CI = 0.49-0.89). The adherence to maintaining a healthy weight was worse in those with ≥2 comorbidities and stage III-IV tumors. The physical activity adherence was worse in working women and those with ≥2 comorbidities. The alcohol restriction adherence was worse in smokers. Younger women, smokers and those with a low calorie intake were less adherent to the fruit/vegetable recommendation. The consumption of fiber and limited consumption of red/processed meat adherence was poor in all the subgroups. The adherence to a limited consumption of fast food and sugary drinks was worse in younger women and high-calorie-diet consumers. Conclusions: The differences in the adherence to recommendations according to patient characteristics justify the design of personalized interventions for breast cancer patients. Pachón Olmos V, Pollán M, Fernández de Larrea-Baz N, Fernández-Morata J, Ruiz-Moreno E, García-Pérez J, Castelló A, Sierra MÁ, Lucas P, Alonso-Ledesma I, Stradella A, Cantos B, Ramón Y Cajal T, Santisteban M, Seguí MÁ, Santaballa Bertrán A, Granja M, Camps-Herrero J, Recalde S, Mendez M, Calvo Verges N, Pérez-Gómez B, Pastor-Barriuso R, Lope V. Determinants of Adherence to World Cancer Research Fund/American Institute for Cancer Research Recommendations in Women with Breast Cancer. Cancers (Basel). 2025 Feb 19;17(4):708. 10.3390/cancers17040708 2072-6694 Cancers 40002301 https://hdl.handle.net/20.500.12105/26692 WCRF/AICR guidelines Breast cancer patients Cancer prevention recommendations Compliance Health behaviors Healthy lifestyle Lifestyle recommendations Determinants of Adherence to World Cancer Research Fund/American Institute for Cancer Research Recommendations in Women with Breast Cancer