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Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
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Related Experiment Video

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Author Spotlight: Investigating the Relationship Between FSH and Pathophysiological Changes in Perimenopausal Women - Insights from a Mouse Model
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FSH suppression does not affect bone turnover in eugonadal men.

Alexander V Uihlein1, Joel S Finkelstein, Hang Lee

  • 1Endocrine Unit (A.V.U., J.S.F., B.Z.L.) and Biostatistics Center (H.L.), Massachusetts General Hospital, Boston, Massachusetts 02114.

The Journal of Clinical Endocrinology and Metabolism
|March 21, 2014
PubMed
Summary

Follicle-stimulating hormone (FSH) does not appear to regulate bone metabolism in healthy men. Suppressing FSH levels while maintaining stable gonadal steroids did not alter bone turnover markers in this study.

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Area of Science:

  • Endocrinology
  • Bone Biology
  • Reproductive Medicine

Background:

  • Conflicting in vitro and animal studies suggest a role for FSH in bone turnover.
  • The independent role of FSH in human bone metabolism remains unclear.

Purpose of the Study:

  • To investigate the effect of FSH suppression on bone metabolism markers in healthy men.
  • To test the hypothesis that FSH influences bone turnover independently of gonadal steroids.

Main Methods:

  • Randomized controlled trial in eugonadal men aged 20-50 years.
  • Intervention group received GnRH analog to suppress FSH plus testosterone gel; control group received placebos.
  • Matched groups ensured stable testosterone and estradiol levels over 16 weeks.

Main Results:

  • Serum FSH significantly decreased by 60% in the intervention group compared to controls.
  • No significant changes in bone resorption markers (N-terminal telopeptide, C-terminal telopeptide) or bone formation marker (osteocalcin) were observed.
  • No between-group differences in bone turnover markers were detected.

Conclusions:

  • Short-to-midterm suppression of FSH does not impact bone turnover in men when gonadal steroid levels are stable.
  • FSH is unlikely to be a significant regulator of bone metabolism in eugonadal men.