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:

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

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.