Prostate disease: what you should know? Submitted by agl_jaypee on Wed, 03/17/2021 - 12:44 The prostate gland (the prostate) is an organ of the male reproductive system. It is about the size of a walnut and is found at the base of the bladder. The average weight of prostate is 20 grams. After the age of forty, there is reawakening of growth spurts in prostate glands leading to its enlargement. Read more about Prostate disease: what you should know?