Stomach (Gastric) Cancer Prevention (PDQ®): Prevention - Health Professional Information [NCI] - Overview
Magnitude of Effect: Risk of cancer may be reduced; effect on cancer mortality is not known.
|Study Design: Randomized controlled trials of H. pylori eradication. |
|Internal Validity: Good.|
|External Validity: Good.|
Interventions With Inadequate Evidence as to Whether They Reduce the Risk of Stomach (Gastric) Cancer
Based on fair evidence, excessive salt intake and deficient dietary consumption of fresh fruits and vegetables are associated with an increased risk of gastric cancer. Dietary intake of vitamin C contained in vegetables, fruits, and other foods of plant origin is associated with a reduced risk of gastric cancer. Diets high in whole-grain cereals, carotenoids, allium compounds, and green tea are also associated with a reduced risk of this cancer. However, it is uncertain if changing one's diet to include more vegetables, fruits, and whole grains would reduce the risk of gastric cancer.
Magnitude of Effect: Small, difficult to determine.
|Study Design: Cohort or case-control studies.|
|Internal Validity: Good.|
|Consistency: Small number of studies.|
|External Validity: Fair (populations vary greatly in their underlying nutritional status).|
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