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Article Publish Status: FREE
Abstract Title:

An update of the WCRF/AICR systematic literature review on esophageal and gastric cancers and citrus fruits intake.

Abstract Source:

Cancer Causes Control. 2016 Jul ;27(7):837-51. Epub 2016 May 6. PMID: 27153845

Abstract Author(s):

Snieguole Vingeliene, Doris S M Chan, Dagfinn Aune, Ana R Vieira, Elli Polemiti, Christophe Stevens, Leila Abar, Deborah Navarro Rosenblatt, Darren C Greenwood, Teresa Norat

Article Affiliation:

Snieguole Vingeliene

Abstract:

PURPOSE: The 2007 World Cancer Research Fund/American Institute for Cancer Research expert report concluded that foods containing vitamin C probably protect against esophageal cancer and fruits probably protect against gastric cancer. Most of the previous evidence was from case-control studies, which may be affected by recall and selection biases. More recently, several cohort studies have examined these associations. We conducted a systematic literature review of prospective studies on citrus fruits intake and risk of esophageal and gastric cancers.

METHODS: PubMed was searched for studies published until 1 March 2016. We calculated summary relative risks and 95 % confidence intervals (95 % CI) using random-effects models.

RESULTS: With each 100 g/day increase of citrus fruits intake, a marginally significant decreased risk of esophageal cancer was observed (summary RR 0.86, 95 % CI 0.74-1.00, 1,057 cases, six studies). The associations were similar for squamous cell carcinoma (RR 0.87, 95 % CI 0.69-1.08, three studies) and esophageal adenocarcinoma (RR 0.93, 95 % CI 0.78-1.11, three studies). For gastric cancer, the nonsignificant inverse association was observed for gastric cardia cancer (RR 0.75, 95 % CI 0.55-1.01, three studies), but not for gastric non-cardia cancer (RR 1.02, 95 % CI 0.90-1.16, four studies). Consistent summary inverse associations were observed when comparing the highest with lowest intake, with statistically significant associations for esophageal (RR 0.77, 95 % CI 0.64-0.91, seven studies) and gastric cardia cancers (RR 0.62, 95 % CI 0.39-0.99, three studies).

CONCLUSIONS: Citrus fruits may decrease the risk of esophageal and gastric cardia cancers, but further studies are needed.

Study Type : Meta Analysis, Review

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Sayer Ji
Founder of GreenMedInfo.com

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