Progesteronanstiegs

Progesteronanstieg refers to the increase in the level of the hormone progesterone in the body. This hormonal shift is a natural and crucial part of the female reproductive cycle, primarily occurring after ovulation. Following the release of an egg from the ovary, the ruptured follicle transforms into a structure called the corpus luteum. The corpus luteum then begins to produce and secrete progesterone, leading to a rise in its circulating levels.

This surge in progesterone plays a vital role in preparing the uterus for a potential pregnancy. It causes the endometrium, the lining of the uterus, to thicken and become more vascularized, creating a receptive environment for a fertilized egg to implant. Progesterone also inhibits contractions of the uterine muscles, preventing premature expulsion of a potential embryo. Furthermore, it can affect other bodily functions, such as raising body temperature and influencing mood.

If fertilization and implantation do not occur, the corpus luteum degenerates, leading to a sharp decline in progesterone levels. This drop triggers menstruation, the shedding of the uterine lining. If pregnancy is established, the corpus luteum continues to produce progesterone, and later, the placenta takes over this function, maintaining the elevated progesterone levels necessary to support the pregnancy. Progesterone levels can also be influenced by external factors, including certain medications and medical conditions.