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  • Title: Inverse association between intake of cereal fiber and risk of gastric cardia cancer.
    Author: Terry P, Lagergren J, Ye W, Wolk A, Nyrén O.
    Journal: Gastroenterology; 2001 Feb; 120(2):387-91. PubMed ID: 11159879.
    Abstract:
    BACKGROUND & AIMS: Recent data show that salivary nitrites form carcinogenic nitrosamines, especially at the gastric cardia. Wheat fiber has been shown to neutralize such mutagen formation. Our aim was to evaluate the association between dietary fiber and cancers of the esophageal and gastric cardia. METHODS: We examined data from a large-scale population-based case-control study of risk factors for adenocarcinoma of the gastric cardia and esophagus and squamous cell carcinoma of the esophagus. RESULTS: We found a strong dose-dependent inverse association between total dietary fiber intake and risk of gastric cardia adenocarcinoma, which was driven mainly by intake of cereal fiber. The odds ratio among individuals in the highest quartile of cereal fiber intake compared with the lowest was 0.3 (95% confidence interval, 0.2-0.5; P trend < 0.0001). High intake of cereal fiber was also associated with a moderately decreased risk of esophageal adenocarcinoma, but no linear dose-risk trend was observed. There was no association between dietary fiber and esophageal squamous cell carcinoma. CONCLUSIONS: High intake of cereal fiber may significantly lower the risk of gastric cardia cancer.
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