I have difficulty urinating (I still retain a lot of urine), chronic constipation, episodes of blood in the stools, hemmorhoids, occasional bouts of muscle fatigue, iron deficiency anemia. I had cancer of the kidney 11 years ago and had one of the kidneys removed. I am gettting a colonoscopy tomorrow and having the hemmorhoids removed. Do you think this is going to solve my problems? I am concerned about having either colon or prostate cancer or both. I am 57 years old.