A low sperm count (oligospermia) is one cause of male infertility. Oligospermia is defined as having less than 20 million sperm per milliliter of ejaculate. Although it takes only a single sperm to fertilize an ...

Benign prostatic hyperplasia (BPH) is a noncancerous prostate problem in which the normal elements of the prostate gland enlarge and grow in number. Their sheer bulk may compress the urethra, which courses through the center ...