Bowel cancer, also known as colorectal cancer, occurs when abnormal cells grow in the lining of the large intestine or rectum. It often begins as small growths called polyps, which can develop into cancer over time. Symptoms may include changes in bowel habits, blood in the stool, and unexplained weight loss. Risk factors for bowel cancer include age, family history, and certain lifestyle choices, such as a diet high in red or processed meats. Regular screening, especially for those over 50, can help detect the disease early, improving treatment outcomes and survival rates.