Colon Cancer Symptoms

  • A change in bowel habits — constipation or diarrhea that lasts more than a couple of weeks. 
  • A feeling that the bowel does not empty completely. 
  • Bright red or very dark blood in the stool, black stools that may indicate hidden blood. 
  • Stools that look narrower or thinner than normal. 
  • Abdominal discomfort such as frequent gas pains, bloating, fullness, or cramps. 
  • Weight loss with no known explanation. 
  • Constant tiredness or fatigue. 
  • Unexplained anemia (low number of red blood cells).