Colon cancer happens when cells in the colon develop changes in their DNA. Doctors arent certain what causes most colon cancers, but several factors can increase the risk of developing colon cancer. These factors include:

• Age: Colon cancer can happen at any age, but most people with colon cancer are older than 50. The risk of developing colon cancer increases as you get older.

• Family history: Having a personal or family history of colorectal cancer or colorectal polyps increases the risk of colon cancer.

• Inherited syndromes: Some DNA changes that increase the risk of colon cancer run in families. These include familial adenomatous polyposis (FAP) and Lynch syndrome (hereditary non-polyposis colorectal cancer) .

• Inflammatory bowel diseases: Conditions that cause pain and swelling of the intestines, called inflammatory bowel diseases, can increase the risk of colon cancer. These conditions include ulcerative colitis and Crohns disease.

• Diet: A diet low in fiber and high in fat and red meat, or a diet high in processed meats, can increase the risk of colon cancer.

• Obesity: People who are obese have an increased risk of colon cancer. Obesity also increases the risk of dying of colon cancer.

• Smoking: People who smoke can have an increased risk of colon cancer.

• Alcohol: Drinking alcohol can increase the risk of colon cancer.

• Lack of physical activity: Not being physically active can increase the risk of colon ca...