Abstract Title:

Dietary Fiber Intake Reduces Risk for Barrett's Esophagus and Esophageal Cancer.

Abstract Source:

Crit Rev Food Sci Nutr. 2015 Oct 13:0. Epub 2015 Oct 13. PMID: 26462851

Abstract Author(s):

Lingli Sun, Zhizhong Zhang, Jian Xu, Gelin Xu, Xinfeng Liu

Article Affiliation:

Lingli Sun


BACKGROUND: Observational studies suggest an association between dietary fiber intake and risk of Barrett's esophagus and esophageal cancer. However, the results are inconsistent.

OBJECTIVE: To conduct a meta-analysis of observational studies to assess this association.

DESIGN: All eligible studies were identified by electronic searches in PubMed and Embase through February 2015. Dose-response, subgroup, sensitivity and publication bias analyses were performed.

RESULTS: A total of 15 studies involving 16,885 subjects were included in the meta-analysis. The pooled OR for the highest compared with the lowest dietary fiber intake was 0.52 (95% CI, 0.43-0.64). Stratified analyses for tumor subtype, study design, geographic location, fiber type, publication year, total sample size and quality score yielded consistent results. Dose-response analysis indicated that a 10 g/d increment in dietary fiber intake was associated with a 31% reduction in Barrett's esophagus and esophageal cancer risk. Sensitivity analysis restricted to studies with control for conventional risk factors produced similar results, and omission of any single study had little effect on the overall risk estimate.

CONCLUSIONS: Our findings indicate that dietary fiber intake is inversely associated with risk of Barrett's esophagus and esophageal cancer. Further large prospective studies are warranted.

Study Type : Meta Analysis

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Sayer Ji
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