What causes stomach cancer?

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Stomach cancer begins when cancer cells form in the inner lining of your stomach. These cells can grow into a tumor. Likewise called stomach cancer, the disease usually grows gradually over several years.

If you know the symptoms it causes, you and your doctor may have the ability to spot it early, when it’s most convenient to treat.

What Causes Stomach Cancer?

Researchers do not know precisely what makes cancer cells begin growing in the stomach. But they do know a few things that can raise your risk for the disease. One of them is infection with a typical bacteria, H. pylori, which causes ulcers. Inflammation in your gut called gastritis, a specific kind of long-lasting anemia called pernicious anemia, and developments in your stomach called polyps likewise can make you more likely to get cancer.

Other things that seem to play a role in raising the risk consist of:

  • Smoking
  • Being obese or obese
  • A diet high in smoked, pickled, or salty foods
  • Stomach surgery for an ulcer
  • Type-A blood
  • Epstein-Barr virus infection
  • Certain genes
  • Working in coal, metal, lumber, or rubber markets
  • Exposure to asbestos


Early on, stomach cancer might cause:

  • Indigestion
  • Feeling bloated after you eat a meal
  • Heartburn
  • Small nausea
  • Loss of appetite

Just having indigestion or heartburn after a meal doesn’t suggest you have cancer. But if you feel these symptoms a lot, speak to your doctor. He can see if you have other risk factors and test you to look for any problems.