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The exact reason why cells within the stomach lining become cancerous is not fully understood. In many cases there is no apparent reason why someone has developed a stomach cancer. However, there are certain risk factors which do increase the chance of developing it. These include:


It is more common in older people


Stomach cancer is much more common in people who smoke


In some countries of the world (such as Japan) where people eat a lot of salt, pickled and smoked foods, there is a higher rate of stomach cancer. Eating a lot of fruit and green vegetables is known to reduce the risk of stomach cancer

Helicobacter Pylori  

This is a very common, long term stomach infection in the United Kingdom, and the vast majority of people with this infection do not develop stomach cancer. However, it does very slightly increase the risk of causing stomach cancer.

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