6. Change In Bowel Habits or Bladder Function
Long-term constipation, diarrhea, or a change in stool size may be a sign of colon cancer. Pain when passing urine, blood in the urine, or a change in bladder function could be related to bladder or prostate cancer. This includes needing to pass urine more or less often than usual. Report any changes in bladder or bowel function to a doctor.
