Understand Follicle-Stimulating Hormone (FSH)

Follicle-Stimulating Hormone (FSH)

Here’s what it reflects — and what to do about it.

Longetic pulls together every lab and record you’ve had, follows how Follicle-Stimulating Hormone (FSH) changes over time, and explains what’s shifting — so you walk into your next appointment prepared, with reminders for retests along the way.

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Updated Jul 13, 2026

What is Follicle-Stimulating Hormone (FSH)?

A pituitary hormone that helps control the ovaries in women and sperm production in men.

FSH is made by the pituitary gland and works with LH to manage reproduction, triggering egg growth in women and supporting sperm production in men. It is interpreted by sex and, in menstruating women, by cycle timing, and is often measured together with LH. Higher FSH can be associated with the ovaries or testicles not responding normally (including perimenopause and menopause, when higher FSH is expected); lower FSH can be associated with a pituitary or hypothalamus problem. Testing is usually not needed at age 45 or older, because higher FSH is a normal sign of menopause.

What to know about Follicle-Stimulating Hormone (FSH)

Understanding Follicle-Stimulating Hormone (FSH) means knowing what it reflects, what tends to move it, and the signs that suggest it’s worth a closer look — so you can bring the right questions to your next appointment.

This glossary entry is for informational purposes only and is not a substitute for professional medical advice. Read our Medical Disclaimer.

References

Clinical "Follicle-Stimulating Hormone (FSH) Levels Test" MedlinePlus (NIH/NLM). medlineplus.gov/lab-tests/follicle-stimulating-hormone-fsh-levels-test.

About our sources

Clinical / professional

Medical societies, specialty colleges, and professional associations whose consensus statements reflect clinical practice standards.

Peer-reviewed research

Original research articles and systematic reviews published in indexed journals and verified through PubMed or DOI.

History of updates

Published · Jul 13, 2026
First published; written and independently fact-checked against the cited sources.

Track your Follicle-Stimulating Hormone (FSH) over time with Longetic

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