Home > Health Library > Pregnancy & Newborns > Preparing for Pregnancy > Difficulty Getting Pregnant > Causes of Infertility
Causes of Infertility
Women with endometriosis develop tissue that looks and acts like endometrial tissue outside the uterus, usually on other reproductive organs inside the pelvis or in the abdominal cavity.
Male Factor Infertility
Problems with the production and maturation of sperm are the most common causes of male infertility.
Pelvic Inflammatory Disease (PID)
Untreated, PID can cause infertility and can also lead to chronic infection or even peritonitis.
Polycystic Ovarian Syndrome (PCOS)
This syndrome results from several related factors, including insulin resistance. This can lead to obesity and type 2 diabetes and affect fertility.
Sexually Transmitted Diseases
Women suffer more frequent and severe symptoms from STDs. Some STDs can cause pelvic inflammatory disease, which can lead to both infertility and ectopic pregnancy.
Some estimates say that 20 to 50 percent of women of reproductive age have fibroids, although not all are diagnosed. In most cases, fibroids are benign.