Prostate cancer is a disease is which the cells of the prostate become abnormal and start to grow uncontrollably, forming tumors. It is the most common cancer among men in the United States,and is the second leading cause of cancer deaths.

The prostate, testicles, and seminal vesicles are the major male sex glands. These three glands together secrete the fluid that makes up semen. The prostate is about the size of a walnut and lies just behind the urinary bladder. A tumor in the prostate interferes with proper control of the bladder and normal sexual functioning. Often, the first symptom of prostate cancer to develop is difficulty in urinating.

The cause of prostate cancer is not known, however, it is found mainly in men over the age of 55. 80% of the prostate cancer cases occur in men over the age of 65. Hence, age appears to be...