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How to recognize colon cancer symptoms
Pay attention to blood in your stool.
If you have ongoing rectal bleeding that doesn't seem to be a result of hemorrhoids or a tear, it's a good idea to go to the doctor and get checked out. Blood in the stool is a common symptom of colon cancer.
Blood can make your stool look either bright red or black. If you are not sure whether you see blood or not, be safe and contact your doctor nonetheless.