Hi,
I think your grandpa needs to see a doctor and do some examinations and tests.
Some symptoms of prostate cancer are—
Difficulty in starting urination.
Weak, or interrupted flow of urine.
Frequent urination, especially at night.
Difficulty in emptying the bladder completely.
Pain or burning during urination.
Blood in the urine or semen.
Pain in the back, hips, or pelvis that doesn't go away.
Painful ejaculation.
If you have any symptoms that worry you, be sure to see your doctor right away. These symptoms may be caused by conditions other than prostate cancer.
There are some preventive measures for you.
Please log on to these websites
http://www.99eyao.com/english/art_detail.asp?aid=1625
http://www.99eyao.com/english/art_detail.asp?aid=1026
Best wishes
Dr. Lee
