Change in Bowel or Bladder Habits
Suddenly need to urinate all the time or feel constant pressure on your bladder? Unless you’ve started drinking more liquids or you’re pregnant, is certainly a red flag.
Cancer of the bowel causes blockage in the passage, which can lead to constipation, diarrhea, gas pains, blood in the stool, and rectal bleeding. Any continuing urinary problems such as difficulty in beginning to urinate, the need to urinate frequently, blood in the urine, and painful urination could be symptoms of prostate or bladder infection or cancer.
However, many men develop prostate cancer without any symptoms.