The risk factors for colorectal cancer can be divided into two groups:

• Genetic risk factors
• Lifestyle related risk factors

Genetic risk factors for colorectal cancer include:

• Family history of colon cancer
• Family history of intestinal polyps
• Intestinal polyps
• Previous colon cancer
• Ulcerative colitis
• Crohn's disease

Lifestyle risk factors for colorectal cancer include:

• Chronic constipation
• Diet:
• High-fat diet
• low fiber diet
• Obesity
• Smoking