There is no such thing as the 5 symptoms that will definitely appear before you really get bowel cancer. Early stage of bowel cancer usually has no obvious symptoms, and it is not until the lesions have developed to a certain extent that symptoms such as change in bowel habit, change in stool properties, abdominal pain, anemia, and weight loss will appear. Bowel cancer generally refers to colorectal cancer, which has an insidious onset, and early patients often do not have any self-conscious symptoms and will not have the so-called 5 symptoms. After the disease develops to a certain degree, due to the narrowing of intestinal lumen caused by tumor growth, patients may suffer from constipation, diarrhea and other symptoms, and when the cancerous tumor breaks down, patients’ feces may show the manifestation of mucus and blood in stools. Besides the above symptoms, patients may also have abdominal pain, abdominal discomfort, abdominal mass, anemia, emaciation, fatigue, low fever and other symptoms. The incidence of bowel cancer may be related to age, genetic predisposition, lifestyle, dietary habits, chronic inflammation of the intestines, etc. Specifically, the risk of bowel cancer is higher for patients over 50 years old; if someone in the elder generation suffers from bowel cancer, the probability of his offspring suffering from bowel cancer will be higher accordingly; a long term high-fat, high-phosphorus, low-fiber, and low-calcium diet will lead to an increased risk of bowel cancer; long-term smokers will also be at a higher risk of bowel cancer; and long-term smokers will also be at a higher risk of bowel cancer. The incidence rate of bowel cancer will also increase; chronic ulcerative colitis, total colitis patients with bowel cancer incidence rate is also higher than normal people several times or even dozens of times. If you do not have the above symptoms of bowel cancer, but have the above high risk factors, you need to have regular medical checkups, please consult your doctor for specific checkup programs.