What causes stomach cancer?

A source has not been clarified, but some causes could be from disorders, infections, and diet. While these are not necessarily causes, there are certain risk factors for developing stomach cancer. These include:
  • A diet that is high in salty and smoked foods
  • A diet that is low in fruits and vegetables
  • A family history of stomach cancer
  • Infection with the bacteria Helicobacter pylori
  • Long-term stomach inflammation/chronic gastritis
  • Stomach polyps
  • Smoking
  • Pernicious anemia