Hormone imbalances can cause several types of pregnancy problems and related problems, including:
- Infertility. This happens when the ovaries aren't releasing an egg every month.
- Repeat miscarriages.
- Gestational diabetes during pregnancy.
- Increased blood pressure during pregnancy or delivery, having a larger than normal or smaller than normal baby, or having a premature baby.
- Precancer of the uterine lining (endometrial hyperplasia). This can happen when you don't have regular menstrual cycles, which normally build up and "clear off" the uterine lining every month.
- Uterine (endometrial) cancer. Risk during the reproductive years is 3 times greater in women who have PCOS than in women who ovulate monthly.2