Stomach Cancer Causes: An Overview
No one knows the exact cause of
stomach cancer. Doctors can seldom explain why one person will get stomach cancer and another person will not. However,
stomach cancer research has shown that people with certain risk factors are more likely than others to develop the disease. A risk factor is anything that increases a person's chances of developing a disease.
For purposes of this article, the term "stomach cancer" refers to gastric adenocarcinoma (cancer of the glandular tissue in the stomach). This is the most common type of stomach cancer. Other types of stomach cancer include lymphomas (cancers involving the lymphatic system) and sarcomas (cancers of the connective tissue, such as muscle, fat, or blood vessels).
(Click Lymphoma for information about a less common type of stomach cancer.)
Stomach Cancer Causes: Know the Risk Factors
Researchers have identified certain risk factors for stomach cancer. While not stomach cancer causes, these risk factors can increase a person's chances of developing the disease. Examples of stomach cancer risk factors include:
- Age (most people with stomach cancer are 72 years of age or older)
- Being male
- Being of Asian, Pacific Islander, Hispanic, or African American descent
- Eating a diet high in foods that are smoked, salted, or pickled
- Having a Helicobacter pylori (H. pylori) infection
- Smoking
- Having certain health problems -- such as chronic gastritis, pernicious anemia, intestinal metaplasia, familial adenomatous polyposis (FAP), or gastric polyps
- Having a family history of stomach cancer.
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