What are the key symptoms of colon cancer?

Colon cancer symptoms can be more systemic and may not appear in the early stages. Common symptoms include:

• A persistent change in bowel habits (diarrhea or constipation that doesn’t go away).
• Rectal bleeding or blood in the stool, which may be dark red or black.
• A feeling that your bowel doesn’t empty completely.
• Persistent abdominal pain, cramping, gas, or bloating.
• Unexplained weight loss.
• Fatigue and weakness (which can be a sign of anemia caused by blood loss)