Adherence to nutrition-based cancer prevention guidelines and breast, prostate and colorectal cancer risk in the MCC-Spain case-control study

Prostate, breast and colorectal cancer are the most common tumours in Spain. The aim of the present study was to evaluate the association between adherence to nutrition-based guidelines for cancer prevention and prostate, breast and colorectal cancer, in the MCC-Spain case-control study. A total of 1,718 colorectal, 1,343 breast and 864 prostate cancer cases and 3,431 population-based controls recruited between 2007 and 2012, were included in the present study. The World Cancer Research Fund/American Institute for Cancer Research (WCRC/AICR) score based on six recommendations for cancer prevention (on body fatness, physical activity, foods and drinks that promote weight gain, plant foods, animal foods and alcoholic drinks; score range 0-6) was constructed. We used unconditional logistic regression analysis adjusting for potential confounders. One-point increment in the WCRF/AICR score was associated with 25% (95% CI 19-30%) lower risk of colorectal, and 15% (95% CI 7-22%) lower risk of breast cancer; no association with prostate cancer was detected, except for cases with a Gleason score ≥7 (poorly differentiated/undifferentiated tumours) (OR 0.87, 95% CI 0.76-0.99). These results add to the wealth of evidence indicating that a great proportion of common cancer cases could be avoided by adopting healthy lifestyle habits.This study was supported by Acción Transversal del Cancer and Instituto de Salud Carlos III-FEDER; Grant numbers: PI08/1770, PI08/0533, PI08/1359, PS09/00773, PS09/01286, PS09/01903, PS09/02078, PS09/01662, PI11/01403, PI11/01889, PI11/00226, PI11/01810, PI11/02213, PI12/ 00488, PI12/00265, PI12/01270, PI12/00715, PI12/00150; Grant sponsor: Fundación Marqués de Valdecilla; Grant number: API 10/09; Grant sponsors: ICGC International Cancer Genome Consortium CLL and Junta de Castilla y León; Grant number: LE22A10-2; Grant sponsor: Consejería de Salud of the Junta de Andalucía; Grant number: PI-0571; Grant sponsor: Conselleria de Sanitat of the Generalitat Valenciana; Grant number: AP 061/10; Grant sponsor: Recercaixa; Grant number: 2010ACUP 00310; Grant sponsors: Regional Government of the Basque Country and European Commission; Grant number: FOOD-CT-2006–036224-HIWATE; Grant sponsors: Spanish Association Against Cancer (AECC) Scientific Foundation and The Catalan Government DURSI Grant; Grant number: 2009SGR1489; Grant sponsors: Ministerio de Economía y Competitividad, Spain and European Regional Development Fund; Grant number: RYC-2011–0879