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High-Fiber Diet Cuts Risk of Colorectal Adenoma

Tuesday, March 11, 2014 (Last Updated: 03/12/2014)

TUESDAY, March 11, 2014 (HealthDay News) -- There is a significant inverse relationship between total dietary fiber intake and risk of colorectal adenoma (CRA), according to research published in the March issue of Gastroenterology.

Qiwen Ben, M.D., of the Shanghai Jiaotong University in China, and colleagues conducted a meta-analysis of 20 case-control and cohort studies, involving 10,948 subjects with CRA. The authors sought to assess the association between dietary fiber intake and risk of CRA.

The researchers observed associations between high total dietary fiber intake and reduced risk of CRA in a high-intake versus low-intake analysis (summary relative risk [SRR], 0.72; 95 percent confidence interval [CI], 0.63 to 0.83) and in a per 10 g/day-increase in fiber intake in a dose-response model (SRR, 0.91; 95 percent CI, 0.87 to 0.95). For high intake versus low intake of fiber, subgroup analyses showed SRRs of 0.84 for fruit fiber (95 percent CI, 0.76 to 0.94), 0.93 for vegetable fiber (95 percent CI, 0.84 to 1.04), and 0.76 for cereal fiber (95 percent CI, 0.62 to 0.92).

"The results of this meta-analysis support the hypothesis that dietary fiber intake is associated inversely with the risk of CRA," the authors write.

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Specialties Hematology & Oncology
Family Practice
Internal Medicine

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