What are the causes of colon cancer? 1.History of colon diseases: certain colon diseases such as Crohn’s disease or ulcerative colitis may increase the chance of colorectal cancer, and their risk of colon cancer is 30 times higher than that of normal people. 2.Polyp: Most colorectal cancers develop from small precancerous lesions, they are called polyps, among which villous adenoma-like polyps are more likely to develop into cancer, and the chance of malignant becoming is about 25%; the malignant rate of tubular adenoma-like polyps is 1-5%. 3, genetic characteristics: some familial tumor syndromes, such as hereditary non-polyposis colon cancer, can significantly increase the chance of colorectal cancer, in addition, if someone’s parents have had colorectal cancer, the risk of getting this disease is 8 times higher than the general population. How to prevent colon cancer in life? 1.Maintain a healthy lifestyle: exercise properly, maintain a regular rhythm of life, quit smoking and drinking, and control weight. 2.Maintain a healthy diet: you should eat more yams, corn, fruits, fresh vegetables and other foods rich in carbohydrates and coarse fibers, drink more milk, supplement calcium and vitamins, eat less fried, smoked, high-fat and high-protein foods, and do not eat fruits, vegetables and foods that are likely to rot. 3.Blood in stool is often the first symptom of colorectal cancer patients, followed by changes in stool habits, including changes in stool time and frequency, as well as constipation or unexplained abdominal pain and diarrhea. 4.Pay attention to the high-risk factors of colorectal cancer, such as familial colon cancer or polyposis, ulcerative colitis, intestinal adenoma, etc., and should go to hospital for consultation or examination regularly.