What is Luteinizing Hormone (LH)?
Luteinizing hormone triggers testosterone production in the testicles. It’s part of the hypothalamic–pituitary–gonadal (HPG) axis, the signaling pathway that regulates hormone production. In men, LH stimulates Leydig cells in the testes to produce testosterone.
If testosterone levels fall, the brain typically increases LH output. If testosterone rises, LH production decreases. This feedback system helps maintain hormonal balance.
Why Does LH Matter?
- Supports energy, libido, and sexual health by supporting testosterone production
- Promotes bone health indirectly by stimulating the production of testosterone
- Contributes to muscle mass and strength through its role in maintaining healthy testosterone levels
- In women, LH is essential for ovulation and normal menstrual cycling
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How to Interpret LH Levels
(Ranges may vary slightly by lab)
Standard reference ranges represent the middle 95% of healthy individuals but don’t necessarily reflect levels associated with longevity. Optimal ranges are derived from clinical guidelines, peer-reviewed research, and real-world outcomes data, with an emphasis on levels associated with peak functioning and reduced disease risk.
Benefits of Optimizing LH
- Improved muscle mass and strength
- Decreased visceral fat and improved body composition
- Maintained bone health and a reduced risk of osteoporosis
- Improved fertility and sexual health
- Lower inflammation
- Improved metabolic health
- Improved cardiovascular health and vascular function
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Low LH Levels
Symptoms:
- Low libido
- Erectile dysfunction
- Infertility
- Fatigue
- Mood swings
- Reduced muscle mass
Causes:
- Pituitary or hypothalamic disorders
- High stress
- Obesity
- Chronic illness
- Extreme exercise
- Use of opioids, corticosteroids, or anabolic steroids
- Genetic disorders (Kallmann syndrome)
- Sleep deprivation
Healthspan Impacts:
High LH Levels
Symptoms:
- Low libido
- Infertility
- Erectile dysfunction
- Fatigue
Causes:
- Testicular dysfunction or damage
- Aging
- Testicular injury
- Chemotherapy exposure
- Klinefelter syndrome (a genetic condition)
Healthspan Impacts:
How Hone Treats Out of Range LH
Hone physicians will evaluate LH in men as part of a full hormone panel including total testosterone and free testosterone. They will also consider whether you’ve experienced symptoms of low testosterone. From there, you’ll receive a treatment plan with medications and lifestyle changes to support optimal hormone balance.
- Human chorionic gonadotropin (hCG)* – to stimulate testosterone production
- Clomiphene citrate – to stimulate testosterone production
- Enclomiphene – to stimulate testosterone production
- Testosterone replacement therapy (TRT) – to elevate testosterone levels
*Your Hone Physician does not prescribe these treatments but will recommend further evaluation and help coordinate care with your primary care provider when medical treatment is indicated.
- D-aspartic acid6
- Get 7-8 hours a night of sleep with a consistent schedule
- Maintain healthy body composition
- Avoid severe caloric restriction
- Incorporate resistance training into your routine 2-4x a week, but avoid excessive training
- Reduce alcohol consumption
Kazmi SRH, Can AS (2023). Luteinizing Hormone Deficiency. National Library of Medicine.
↑Qu, M., et al. (2021). Association of Serum Testosterone and Luteinizing Hormone With Blood Pressure and Risk of Cardiovascular Disease in Middle-Aged and Elderly Men. Journal of the American Heart Association.
↑Li, C. X., Tang, S.T., & Zhang, Q. (2015). Changes in Bone Mineral Density and Metabolic Parameters after Pulsatile Gonadorelin Treatment in Young Men with Hypogonadotropic Hypogonadism. International Journal of Endocrinology.
↑Eendebak, R. et al. (2018). Elevated luteinizing hormone despite normal testosterone levels in older men-natural history, risk factors and clinical features. Clinical endocrinology.
↑Kupelian, V., et al. (2006). Is There a Relationship Between Sex Hormones and Erectile Dysfunction? Results From the Massachusetts Male Aging Study. The Journal of Urology.
↑Topo, E., Soricelli, A., & Ronsini, S. (2009). The role and molecular mechanism of D-aspartic acid in the release and synthesis of LH and testosterone in humans and rats. Reproductive Biology and Endocrinology.
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Reviewed for Accuracy by Our Medical Review Board
This biomarker information has been reviewed by a member of Hone’s medical review board. As part of the medical review team, physicians fact-check this content against the latest research and their own experience treating their patients.
Ashley Winter, M.D., is a board-certified urogynecologist trained at Weill Cornell and Cleveland Clinic. She specializes in female and male sexual dysfunction, urinary issues, genital pain, and hormone therapy.
James Staheli, D.O., is the Medical Director for Broad Health, Hone Health’s affiliated medical practice and a family medicine doctor in Atlanta, Georgia.
