What Causes a Missed Miscarriage?
The exact cause of a missed miscarriage is unknown. However, about half of all early miscarriages occur due to a genetic problem with either the egg or sperm. In addition, other factors such as immune system problems and serious infections can increase the risk of miscarriage. The chance of having a miscarriage also increases with age, because of the natural deterioration of egg quality. About one percent of all pregnancies end in a missed miscarriage.
