What is the reason for normal menstruation but no ovulation?

We all know that anovulation can lead to female infertility. Many women have this question: why do they have normal menstruation but anovulation occurs? So what is the reason for anovulation during menstruation?

1. Failure to reach the peak of estrogen secretion

Failure to reach the peak of estrogen secretion results in the ovaries being unable to ovulate. Infertility experts point out that the reason for menstruation but no ovulation is that the corpus luteum secretes a large amount of progesterone and estrogen, which in turn inhibits the hypothalamus, causing the luteinizing hormone and follicle-stimulating hormone to decrease, the corpus luteum to atrophy, and the secretion of progesterone and estrogen to decrease. The endometrium cannot get the support of estrogen and progesterone, so necrosis, shedding, and bleeding will occur.

2. No corpus luteum formation without ovulation

Without ovulation, there will be no corpus luteum formation and no normal secretion of progesterone. In this way, the endometrium remains in the proliferative phase and cannot transform into the secretory phase. Although the uterus bleeds on time, it is not true menstruation, but anovulatory menstruation. Because there is no ovulation, it will inevitably lead to infertility.

3. Follicle wall atrophy after ovulation

After ovulation, the granulosa cells enlarge to form the corpus luteum. The corpus luteum secretes estrogen and progesterone. 12-14 days after ovulation, the corpus luteum begins to shrink and no longer synthesizes progesterone and estrogen.