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Cancer Center

Colorectal Cancer Risk Factors

The risk of developing colorectal cancer increases with advancing age. More than 90% of cases occur in people aged 50 or older. Other risk factors include having:

  • Inflammatory bowel disease.
  • A personal or family history of colorectal cancer or colorectal polyps.
  • A genetic syndrome such as familial adenomatous polyposis (FAP) or hereditary non-polyposis colorectal cancer (Lynch syndrome).

Lifestyle factors that may contribute to increased risk of colorectal cancer include:

  • Lack of regular physical activity
  • Low fruit and vegetable intake
  • A low-fiber and high-fat diet
  • Overweight and obesity
  • Alcohol consumption
  • Tobacco use

*Information from the Centers for Disease Control & Prevention (CDC).