Prostate cancer occurs when the DNA in prostate cells mutates. Those cells divide and multiply and cancer cells form in the tissues of the prostate. The prostate is a walnut-sized gland located just below the bladder and in front of the rectum.
"The prostate gland is an important component of the male reproductive system that allows fertility," according to Andrew Seigel, M.D., a New Jersey-based urologist and author of the book, "Male Pelvic Fitness: Optimizing Sexual & Urinary Health."
"Prostate cancer is the most common cancer in men aside from skin cancer, afflicting 1 of 9 men in the United States," he said.