Infertility affects up to 1 in 6 U.S. couples. The causes can be complex, but are often attributed to the following underlying diseases:
Polycystic ovary syndrome.
A common endocrine disorder characterized by anovulation, which results in irregular menstruation, amenorrhea, ovulation-related infertility, and polycystic ovaries. Fertility treatments may help overcome hormonal irregularities.
Endometriosis.
A condition in which tissue from the uterus grows outside of the uterine cavity, often on the ovaries. Laser surgery can remove excess tissue.
Miscarriage.
Often the result of genetic abnormalities, miscarriage occurs when the baby is lost prior to 24 weeks gestation.
Unexplained infertility.
The inability to get pregnant after 2 years of trying to conceive when all fertility tests produced normal results. Fertility therapy such as IVF may still be successful.
Ectopic pregnancy.
When a fertilized egg attaches outside of the uterus, typically in the fallopian tubes. Surgery will need to be performed to remove the embryo or sometimes the tube.
Preeclampsia.
High blood pressure that typically develops after 12 weeks gestation. Can be life-threatening if not monitored and treated.
http://www.thesun.co.uk/sol/homepage/woman/health/health/4251548/The-common-fertility-problems-women-like-Angelina-Jolie-and-Victoria-Beckham-suffer-from.html
