The prostate is a small, walnut-sized gland that is part of the male reproductive system. It is located below the bladder and in front of the rectum, surrounding the urethra, the tube that carries urine and semen out of the body. The primary function of the prostate is to produce seminal fluid, a component of semen that nourishes and transports sperm. Regular screening and a healthy lifestyle are key to early detection and effective management of prostate-related health issues.