Reproductive endocrinology

Association Between Testosterone Replacement Therapy and Prostatic Disorders in Elderly Hypogonadal Men

J Clin Endocrinol MetabPublished Retrospective cohort study

Main finding · PCaResult — go to the resultHazard ratio 0.84 95% CI 0.82–0.86

Authors' conclusion

TRT use was associated with reduction in PCa hazard and modest increase in BPH hazard. These associations varied by treatment duration, route, and AI coadministration. These findings may inform clinical decision-making regarding TRT use in hypogonadal men and support a more individualized approach to care.

Study context

Population
Men aged ≥65 with diagnosed primary or secondary hypogonadism, Medicare enrollment and claims data (Parts A/B/C/D) 2007–2020matched cohort
Exposure
Testosterone replacement therapy (TRT) use vs no TRT use
Outcome
Prostate outcomes: PCa and BPH
Methodological details1:1 propensity score matching, Cox regression, stratified by age group
  • 1:1 propensity score matching
  • Cox regression
  • Stratified by age group

Main finding

PCa

Hazard ratio

0.84

95% CI 0.82–0.86

TRTvs No TRT
HR 0.84 (95% CI 0.82–0.86)

As reported in the abstract

Prostate cancer (PCa) risk analysis, after propensity score matching
546 964 hypogonadal men
Reduction in PCa hazard, long-term use
15%
Reduction in PCa hazard, short-term use
16%
Reduction in PCa hazard, parenteral use
12%
Reduction in PCa hazard, topical use
13%

Observational data: associations, not effects.

Further findings

PCa, sensitivity analysis excluding elevated PSA and family history of PCa

Reduction in PCa hazard among TRT users
18%

Safety

OutcomeHR (95% CI)
BPH13% increase in hazard · matched cohort1.13 (1.11–1.14)
Benign prostatic hyperplasia (BPH) — BPH risk analysis, after propensity score matching
412 782 hypogonadal men
BPH — Increase in BPH hazard, parenteral TRT
19%
BPH — Increase in BPH hazard, topical TRT
12%
BPH — Increase in BPH hazard, long-term topical use
9%

Original publication

Association Between Testosterone Replacement Therapy and Prostatic Disorders in Elderly Hypogonadal Men. J Clin Endocrinol Metab. Published 9 September 2025. doi:10.1210/clinem/dgaf504

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