I will tell you that it is difficult to determine whether a person is suffering from colon cancer or not simply through stool, however, the colon will provide some important information, which is suggestive of colorectal cancer, however, not everyone will have stool changes, and only a small number of patients, who have abnormal stools, will end up being diagnosed with bowel cancer.

(1) Change of bowel habit

In patients with colorectal cancer, new organisms grow inside the intestine, which will stimulate the intestinal tube, and the patients may have constipation or diarrhea, or diarrhea and constipation alternately, a moment of constipation, a moment of diarrhea. In this case, you need to go to the hospital as soon as possible to check.

(2) Bloody stool or black stool

Tumor inside the intestine, in the process of growth, a part of the cancer cells will be ischemic necrosis and shedding, and the surface of the tumor can form small ulcers, and the friction of the tumor when the stool passes through can also cause the tumor to break and bleed. If the bleeding is relatively large and rapid, and the tumor is close to the anus, then there will be fresh blood stool. If the tumor is far away from the anus, and the bleeding is very small, it can be seen that it may be manifested as black stool, and if it is a very small amount of appearance, it cannot be seen by naked eyes, and it is necessary to test the stool and apply the high sensitivity method in order to diagnose whether there are red blood cells in the stool or not.

(3) Thinning of stools

The intestinal tube is like a water pipe. The growth of tumor into the intestinal tube will lead to the narrowing of the intestinal tube, and when the stools pass through it, they will be squeezed, resulting in thinning of stools and difficulty in defecation. If you have thinning stools, you must be alert to the possibility of bowel cancer or intestinal polyps.

(4) Cessation of bowel movement

If the tumor keeps growing inside the intestinal tube, it can block the intestinal tube, and the stool can not pass through, which results in intestinal obstruction, and the patient does not have any bowel movement or farting for several days, this is a more serious situation, and you need to go to the hospital as soon as possible to see a doctor.

(5) Stool irritation symptoms

Tumors in the sigmoid colon or rectum, which are closer to the anus, will stimulate the muscles around the anus, causing you to always want to have a bowel movement, but there is not much of a bowel movement every time, which is known as a stool irritation symptom, and is also called an urgency. Always feeling like you want to go to the bathroom and always feeling like you can't poop.

It is important to remember that if you experience these symptoms, it is usually in the middle to late stages of bowel cancer. Early stage bowel cancer does not have any obvious symptoms, and regular medical check-ups are the main thing to do.