Risk Factors

Colorectal cancer risk increases with age, inflammatory bowel disease, a personal or family history of colorectal cancer or polyps, and certain hereditary syndromes. A diet high in fat and low in fiber, lack of regular physical activity, obesity, excessive alcohol consumption, and smoking are also thought to increase risk. A diet high in fruits and vegetables, hormone replacement therapy in post-menopausal women, and aspirin use may reduce colorectal cancer risk.