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Understanding Your FSH Levels

Follicle stimulating hormone (FSH) does exactly what it says: each cycle, FSH stimulates a few follicles to develop and mature during the follicular phase (first half of your cycle). In doing this, FSH also helps control the menstrual cycle. In a natural, non-medicated cycle, FSH rises at the beginning of your cycle to help your ovaries grow some eggs. The body usually recruits one dominant follicle that will grow and mature. As the recruited follicle gets stimulated by FSH, and as it starts producing estrogen, this lowers FSH and prevents more follicles from developing. Once estrogen reaches a certain level, it sends a signal to the brain that it’s time to ovulate! This causes the surge in…

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Articles of Interest

FSH Levels in Men and Why it Matters for Fertility

Follicle-Stimulating Hormone (FSH), plays a pivotal role in both the female and male reproductive systems. Produced by the pituitary gland in the brain, FSH stimulates testicular growth. It also helps produce a protein that aids in creating normal sperm cells. FSH levels significantly contribute to the successful creation of healthy sperm, promoting optimal reproductive outcomes.

FSH Levels by Age - Follicle Stimulating Hormone Levels with Chart

It’s important to recognize that there is no one “normal” level of FSH for all women. What is normal is that the normal range changes depending on a woman’s age. As women get older, follicle stimulating hormone levels rise, until they reach a level of 40 mIU/mL or higher during menopause. This means that, for example, test results that are deemed high FSH levels for a woman in her mid-20s may be considered relatively low FSH levels for a woman in her mid-30s.

What Is Follicle-Stimulating Hormone (FSH)? Does It Indicate Fertility?

One of the two gonadotropic hormones and an important part of the reproductive system, follicle stimulating hormone functions to support the growth of ovarian follicles. These follicles are responsible for producing estrogen and progesterone in the ovaries that in turn help regulate the menstrual cycle in women. It is not that there are FSH levels in women only, FSH levels in men are responsible for the development of the gonads and production of sperm.

What is FSH? A Guide to the Follicle-Stimulating Hormone

When it comes to getting pregnant, we all know just how critical the surge in luteinizing hormone (LH) is for ovulation. However, long before your LH surge during the follicular phase, there’s another key hormone at play. Known as FSH (follicle-stimulating hormone), this hormone is responsible for making sure that an egg is properly developed and ready for release through ovulation.

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StatPearls

Follicle-stimulating hormone (FSH) is a hormone produced by the anterior pituitary in response to gonadotropin-releasing hormone (GnRH) from the hypothalamus. FSH plays a role in sexual development and reproduction in both males and females.

You and Your Hormones

Follicle stimulating hormone (or FSH) is one of the gonadotrophic hormones; the other being luteinising hormone (or LH). Both are released by the pituitary gland into the bloodstream. Follicle stimulating hormone is one of the hormones essential to pubertal development and the function of women’s ovaries and men’s testes. In women, this hormone stimulates the growth of ovarian follicles in the ovary before the release of an egg from one follicle at ovulation. It also increases oestradiol production from the ovaries. In men, follicle stimulating hormone acts on the Sertoli cells of the testes to stimulate sperm production (spermatogenesis).