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) 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.