Dietary Fiber, Carbohydrates, Glycemic Index, and Glycemic Load in Relation to Breast Cancer Prognosis in the HEAL Cohort
- 1 May 2011
- journal article
- research article
- Published by American Association for Cancer Research (AACR) in Cancer Epidemiology, Biomarkers & Prevention
- Vol. 20 (5), 890-899
- https://doi.org/10.1158/1055-9965.epi-10-1278
Abstract
Background: Dietary intake of fiber, carbohydrate, glycemic index (GI), and glycemic load (GL) may influence breast cancer survival, but consistent and convincing evidence is lacking. Methods: We investigated associations of dietary fiber, carbohydrates, GI, and GL with breast cancer prognosis among n = 688 stage 0 to IIIA breast cancer survivors in the Health, Eating, Activity, and Lifestyle (HEAL) study. Premenopausal and postmenopausal women from Western Washington State, Los Angeles County, and New Mexico participated. Usual diet was assessed with a food frequency questionnaire. Total mortality, breast cancer mortality, nonfatal recurrence, and second occurrence data were obtained from SEER (Surveillance, Epidemiology, and End Results) registries and medical records. Cox proportional hazards regression estimated multivariate-adjusted hazard ratios and 95% confidence intervals (CI). Results: During a median of 6.7 years follow-up after diagnosis, n = 106 total deaths, n = 83 breast cancer-specific deaths, and n = 82 nonfatal recurrences were confirmed. We observed an inverse association between fiber intake and mortality. Multivariate-adjusted hazard rate ratios (HRR) comparing high to low intake were 0.53 (95% CI 0.23–1.23) and 0.75 (95% CI 0.43–1.31). A threshold effect was observed whereby no additional benefit was observed for intakes of 9 g/d or more. Fiber intake was suggestively inversely associated with breast cancer-specific mortality (HRR = 0.68, 95% CI 0.27–1.70) and risk of nonfatal recurrence or second occurrence (HRR = 0.68, 95% CI 0.27–1.70), but results were not statistically significant. Conclusion: Dietary fiber was associated with a nonsignificant inverse association with breast cancer events and total mortality. Further studies to assess and confirm this relationship are needed in order to offer effective dietary strategies for breast cancer patients. Impact: Increasing dietary fiber may an effective lifestyle modification strategy for breast cancer survivors. Cancer Epidemiol Biomarkers Prev; 20(5); 890–9. ©2011 AACR.Keywords
This publication has 44 references indexed in Scilit:
- Clinically Defined Type 2 Diabetes Mellitus and Prognosis in Early-Stage Breast CancerJournal of Clinical Oncology, 2011
- Adolescent Diet in Relation to Breast Cancer Risk among Premenopausal WomenCancer Epidemiology, Biomarkers & Prevention, 2010
- Medical comorbidities predict mortality in women with a history of early stage breast cancerBreast Cancer Research and Treatment, 2010
- Physical Activity's Impact on the Association of Fat and Fiber Intake With Survival After Breast CancerAmerican Journal of Epidemiology, 2009
- Obesity, Insulin Resistance, and Cancer Prognosis: Implications for Practice for Providing Care among Cancer SurvivorsJournal of the American Dietetic Association, 2009
- International Tables of Glycemic Index and Glycemic Load Values: 2008Diabetes Care, 2008
- Association between dietary fiber and markers of systemic inflammation in the Women's Health Initiative Observational StudyNutrition, 2008
- Correlates of circulating C-reactive protein and serum amyloid A concentrations in breast cancer survivorsBreast Cancer Research and Treatment, 2008
- Influence of a Diet Very High in Vegetables, Fruit, and Fiber and Low in Fat on Prognosis Following Treatment for Breast CancerJAMA, 2007
- Low-Fat Dietary Pattern and Risk of Invasive Breast CancerJAMA, 2006