Here are some of the symptoms of colon cancer:
Changes in bowel habits
One of the early symptoms of colon cancer is a change in bowel habits regularly. Diarrhea or constipation that does not generally happen. A change in stool consistency for more than a few weeks is a change in bowel habit and should be discussed with your doctor. Another warning sign is the presence of blood in the stool or rectal bleeding, although sometimes blood in the stool is often invisible.
Abdominal pain and discomfort also appears to be one of the symptoms of colon cancer. Gas and cramps often occur, particularly if colon cancer tumors inhibited by blocking the normal path of the digestive tract. Pain in the abdomen can occur in colon cancer. Some patients experience a feeling like never empty gut, as quoted from LIVESTRONG.
Symptoms of colon cancer can also present with weight loss that is not intentional. Chronic diarrhea in colon cancer causes a decrease in nutrient absorption and may be the cause of weight loss. Also, low appetite causes decreased intake. Anemia or low iron levels in the blood may occur if the colon cancer causes bleeding and can also be associated with decreased nutrient intake, and weight loss.