Such as diarrhea, constipation, or a change in stool consistency that lasts for more than a few weeks.
Blood in the stool or bleeding from the rectum, which may appear as bright red or very dark.
Significant and unintentional weight loss without changes in diet or exercise.
Feeling weak, tired, or fatigued even after adequate rest.
Iron deficiency anemia due to chronic blood loss from the digestive tract, resulting in fatigue and weakness.
Persistent bloating, cramping, or feeling of fullness in the abdomen.
Especially if accompanied by other digestive symptoms.
Sudden and unexplained narrowing of the stool or feeling that the bowel doesn't completely empty, which may indicate a blockage in the colon.