Reproductive endocrinology

Incomplete Evidence of Bone Density Normalization Following Long-Term Reproductive Hormone Treatment in Men With Hypogonadotropic Hypogonadism

J Clin Endocrinol MetabPublished Systematic review and meta-analysis of observational studies

Pooled result · LS BMD, HH vs healthy controls (meta-analysis of 5 studies)Result — go to the resultSMD −5.98 95% CI −11.5 to −0.47

Authors' conclusion

Men with HH have low BMD that improves with reproductive hormone treatment. However, current evidence suggests that incomplete BMD normalization may be common despite long-term reproductive hormone treatment in men with HH, particularly those with CHH.

Study context

Population
Men with hypogonadotropic hypogonadism (HH) (congenital or acquired), studies reporting bone mineral density (BMD) or fractures
Participants
625 men24 studies
Comparison
Men with HH vs healthy controls
Outcome
Effect of reproductive hormone treatment on BMD
Methodological detailsmeta-regression
  • Meta-regression

Pooled result

As reported in the abstract

LS BMD, HH vs healthy controls (meta-analysis of 5 studies)

SMD

−5.98

95% CI −11.5 to −0.47

HHvs Healthy controls
SMD −5.98 (95% CI −11.5 to −0.47)

Further pooled results

Men with HH had low lumbar spine (LS) and femoral neck BMD, improving with hormonal treatment
Men with CHH may have persistently low BMD despite prolonged hormonal treatment
Higher BMD associated with younger age at treatment initiation, partial HH, and higher serum testosterone and estradiol

Original publication

Incomplete Evidence of Bone Density Normalization Following Long-Term Reproductive Hormone Treatment in Men With Hypogonadotropic Hypogonadism. J Clin Endocrinol Metab. Published 1 October 2025. doi:10.1210/clinem/dgaf488

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