Colon cancer, also known as colorectal cancer, is a type of cancer that begins in the large intestine (colon). This form of cancer typically affects older adults, though it can occur at any age. It often begins as small, benign (noncancerous) clumps of cells called polyps that form on the inside of the colon. Over time, some of these polyps can further turn into colon cancers. These polyps may be small and few in number and may not produce any symptoms. Which is why health professionals recommend regular screening tests. This is to help prevent colon cancer by identifying and removing polyps before they turn into cancer. Symptoms of colon cancer may include changes in bowel habits, blood in the stool, persistent abdominal discomfort, unexplained weight loss, weakness or fatigue. Treatment for colon cancer usually involves surgery to remove the cancer, and may also include chemotherapy, radiation therapy, or targeted drug therapy, depending on the stage of the cancer and other factors.