Is unexplained weight loss a symptom of rectal cancer?

Unexplained weight loss can be a symptom of rectal cancer, especially if it is accompanied by other symptoms such as rectal bleeding, changes in bowel movements, abdominal pain, or fatigue. However, unexplained weight loss can also be a symptom of other conditions, so it is important to see a doctor if you are experiencing unexplained weight loss to determine the cause.