Blood In Stool
If you find blood on, or mixed in with your stools, then this could be sign that you have bowel cancer. The blood may be dark, or bright red, and mixed with mucus. Once you see your doctor, they will send off a stool sample for a laboratory analysis called a fecal occult blood test.
Changes In Stool
If you notice that your stools are very dark in color, or even maroon, and sticky, then this could be caused by bleeding due to bowel cancer. You may experience normal bowel movements in between these stools. You may also notice your stools becoming very narrow or ribbon-like, and the stool may only be as wide in diameter as a pen.
Trouble Passing Stool
Changes in passing of stools is a symptom of bowel cancer. You may experience a feeling of not completely passing a stool or you may feel the urgent need to have a bowel movement, and then you realize that there is no stool to be passed.
The blood that is lost from bowel cancer can cause anemia, which is a shortage of red blood cells in the blood. The symptoms of anemia are feeling tired a lot of the time, weak, and short of breath. Your skin may also look pale.
A certain amount of abdominal discomfort is normal experience at times. However, if you suffer from gas, cramping and bloating a lot of the time, then you could be more likely to develop bowel cancer. It is best to see your doctor about your concerns.
Bowel cancer can result in weight loss even if you are eating normally. Alternatively, you may experience complete loss of appetite. According to the July 2009, BMC Medicine article, more than a third of people with bowel cancer experience unexplained weight loss.
Constipation that persists more than a few days also may occur in association with colon cancer. Chronic or ongoing constipation may even increase your risk of developing colon cancer.