Progesterone is a central hormone of the female cycle. It is produced after ovulation in the corpus luteum of the ovaries and ensures that the uterine lining is prepared for a possible pregnancy. If fertilization occurs, the progesterone level remains high and is later maintained by the placenta.
If progesterone is lacking or the level is too low, it can lead to cycle disorders, difficulties in the implantation of an egg, or early miscarriages. Elevated levels occur naturally during pregnancy but can also arise outside of it due to hormonal disorders, cysts, or rarely, tumors.
