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Why does breastfeeding cause amenorrhea?

By Marta Barranquero Gómez.
Last Update: 08/06/2020

The main reason for the absence of menstruation during lactation is related to suction and blocking of ovarian function.

When the baby suckles, the function of the hypothalamus-pituitary axis is inhibited and therefore no hormones are produced that control ovulation. In this way, the maturation of the egg in the ovary does not take place, nor is progesterone generated. The result of these effects is the absence of menstruation in the woman.

In addition, the levels of the hormone prolactin in lactation are high, which also leads to a maladjustment in the hypothalamus-pituitary axis and causes amenorrhea.

Suggested for you: Amenorrhea Or Absence Of Menstruation: Causes & Treatment.

 Marta Barranquero Gómez
Marta Barranquero Gómez
Embryologist
Graduated in Biochemistry and Biomedical Sciences by the University of Valencia (UV) and specialized in Assisted Reproduction by the University of Alcalá de Henares (UAH) in collaboration with Ginefiv and in Clinical Genetics by the University of Alcalá de Henares (UAH).
License: 3316-CV
Embryologist. Graduated in Biochemistry and Biomedical Sciences by the University of Valencia (UV) and specialized in Assisted Reproduction by the University of Alcalá de Henares (UAH) in collaboration with Ginefiv and in Clinical Genetics by the University of Alcalá de Henares (UAH). License: 3316-CV.
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