Although there is no guaranteed way to prevent stomach cancer, lower the risk of developing the disease by eating fresh vegetables and fruits, maintaining a healthy weight and avoiding smoking, advises the American Cancer Society. Treating H. pylori infections and using nonsteroidal anti-inflammatory drugs may also help.
Diet plays a big role in reducing the risk of stomach cancer development. Avoiding foods that are salted, pickled and smoked can help. A diet that places an emphasis on plant-based foods can help to stave off stomach cancer; the ACS recommends eating 2.5 cups of fruits and vegetables daily and adding whole-grain pastas, cereals and breads to the diet. The addition of beans, poultry and fish instead of red meats and processed foods is also recommended. Supplementing the diet with antioxidants, such as vitamin A, C, E and selenium, may also help reduce the risk of stomach cancer.
Because using tobacco increases the risk of developing cancer in the portion of the stomach that lies the closest to the esophagus, avoiding tobacco use is important, according to the ACS. Tobacco use is responsible for around one-third of U.S. cancer deaths.
Some studies suggest that treatment of H. pylori infections to reduce the number of precancerous lesions found in the stomach may help to prevent cancer of the stomach, notes the ACS. Further studies have shown that the use of nonsteroidal anti-inflammatory drugs, or NSAIDs, including naproxen and ibuprofen, may reduce the risk of developing stomach and colon cancers.