Infertility
The cause of infertility may be found in the woman, the man, or both.
The cause of infertility may be found in the woman, the man, or both. For a number of couples, the cause will remain unknown. The most common causes of infertility are ovulation disorders (20–30%), damage to fallopian tubes (10–20%), endometriosis (10–20%) and sperm quality (20–30%).