It has no known subsequent function. The prostate gland is normally the size of a walnut. As men grow older, the prostate gland grows in size, It can reach the size of an orange or even a small grapefruit. This enlargement can put pressure on the urethra tube and slow the passage of urine. However, another major problem with the prostate is the development of cancer.
Prostate cancer is very, very common, especially in older men.
In fact, it is the most common form of cancer in men. In order to have the best choices for treatment of prostate cancer, it should be found in an early stage when it is small and confined. The PSA blood test helps to discover prostate cancer as early as possible. PSA is shorthand for Prostate Specific Antigen. PSA is produced by the prostate gland and can be measured in the blood.