Is menstrual irregularity caused by low progesterone?

Patient's question:

My menstrual cycle has been particularly irregular recently. Sometimes, it doesn't come for over a month or even two months. Also, when it does come, the flow is extremely heavy. I heard from a friend that it's caused by low progesterone, leading to menstrual irregularities. Is it really caused by low progesterone?

Doctor's answer:

Progesterone is an important pregnancy hormone in a woman's body; it is crucial for childbirth. If progesterone levels are low, it can lead to infertility. Low progesterone levels may cause irregular menstruation, which significantly interferes with pregnancy. Progesterone has a negative feedback regulatory mechanism that can inhibit its own secretion and also suppress estrogen secretion. Its main function is to confirm whether the ovary has gone through menopause and to assess the function of the corpus luteum. Wishing the patient a speedy recovery and good health!

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