Low Estrogen And The Increase of FSH And LH

 

Low Estrogen And The Increase of FSH And LH

Follicle-stimulating & Luteinizing
hormones

Your menstrual cycle is regulated by two hormones manufactured in the pituitary gland.
They are the luteinizing hormone and follicle-stimulating hormone.
Their function is to stimulate the ovaries to produce estrogen and progesterone.
Perimenopause and menopause cause these hormones to fluctuate.

LH (Luteinizing hormone) is also known as a gonadotropin and affects the ovaries in women and the testes in men.
It is produced in the pituitary gland and plays a role in puberty, menstruation, and fertility.
It works together with FSH (Follicle-stimulating hormone), also a gonadotropin produced in the pituitary gland.

FSH triggers the production of estrogen in the follicle and is responsible for stimulating the ovarian follicle, causing an egg to grow.
A rise in estrogen triggers the pituitary gland to stop making FSH and to make more LH, resulting in the egg being released from the ovary.

During menopause, a decline in estrogen leads to an increase in FSH, because there is not enough estrogen being produced to tell the pituitary gland to stop making FSH.
During menopause, your LH and FSG levels will rise because your ovaries have stopped production and fewer ovarian follicles remain.

A blood test can be done to determine stage if you have passed menopause

A blood test measures the amount of LH and FSH in your bloodstream.
A blood test can help determine if you have passed menopause.

LH post-menopause levels will be between 15.9 to 54.0 IU/L
FSH post-menopause levels – 25.8 to 134.8 IU/L

Sources
yourhormones.info – follicle-stimulating hormone
yourhormones.info – how is luteinising hormone controlled
webmed.com – luteinizing hormone test
medicineplus.gov – follicle-stimulating hormone test

https://youtu.be/-SPRPkLoKp8