Longevity & Aging · Metabolic & Cardiometabolic
testosterone therapy improves sexual function
In plain terms: Does testosterone therapy improve sex drive and function?
Part of: 💊 Testosterone therapy (TRT)
For men with genuinely low testosterone, yes — it's one of the most reliable benefits, especially for libido and sexual desire. The effect on erections specifically is more modest, so it's not a stand-alone ED treatment. It does little for men whose testosterone is already normal.
Evidence ladder
How far up the ladder this claim has climbed. A high consensus on a low rung means "consistent so far," not "proven in people."
Top evidence so far: All trials, pooled (Meta-analysis)
How the studies fall
What the evidence shows
For men with genuinely low testosterone, TRT **improves sexual function** — this is among its most consistent benefits, backed by the Testosterone Trials, the TRAVERSE sexual-function study, and multiple meta-analyses. The effect is clearest for **libido/sexual desire and overall sexual activity**; the effect on **erectile function specifically is more modest** (TRT is not a reliable ED treatment
The evidence (11)
| Source | Grade | Stance | Quality | Finding |
|---|---|---|---|---|
| Corona G et al. 2014 · Eur Urol | meta-analysis | mixed | moderate | Meta 41 RCTs: improved erectile function/libido in hypogonadal men, but effect strongest in industry-supported trials (publication-bias concern). |
| Corona G et al. 2017 · J Sex Med | meta-analysis | supports | high | Meta 14 RCTs (n=2298): improved IIEF erectile-function domain (MD +2.31) and libido; greater with more severe hypogonadism. |
| Amiaz R et al. 2011 · J Sex Marital Ther | RCT | supports | low | RCT (depressed men on SSRIs): testosterone gel improved IIEF sexual-function scores vs placebo. |
| Hackett G et al. 2017 · J Sex Med | RCT | supports | moderate | RCT (T2DM men): improved sexual desire (6wk) and erectile function (30wk), greatest in severe hypogonadism. |
| Corona G et al. 2020 · Andrology | mechanism | supports | low | Review: TRT improves erectile function/libido in men with total T <12 nmol/L. |
| Paduch DA et al. 2015 · J Clin Endocrinol Metab | RCT | tested-null | moderate | RCT: testosterone solution did not significantly improve ejaculatory dysfunction vs placebo. |
| Ponce OJ et al. 2018 · J Clin Endocrinol Metab | meta-analysis | supports | moderate | Meta 4 RCTs (n=1779): small but significant gains in libido (SMD 0.17), erectile function (0.16), satisfaction (0.16). |
| Snyder PJ et al. 2016 · N Engl J Med | RCT | supports | high | Testosterone Trials (>=65y): significantly increased sexual activity, desire, and erectile function. |
| Cruickshank M et al. 2024 · Nat Med | meta-analysis | supports | high | IPD meta 35 trials (n=5601): TRT improved sexual function and QoL across almost all subgroups. |
| Pencina KM et al. 2024 · JAMA Netw Open | RCT | supports | high | TRAVERSE Sexual Function Study (n=1161): TRT improved sexual activity, desire, hypogonadal symptoms over 24 months; erectile function NOT significantly improved. |
| Isidori AM et al. 2005 · Clin Endocrinol (Oxf) | meta-analysis | supports | moderate | Meta 17 RCTs: improved erections/sexual thoughts/intercourse success in men with baseline T <12 nmol/L; no effect in eugonadal men. |
Disagree, or know a study we missed?
We grade by evidence, not opinions. The way to weigh in is to point us to a study we haven't cited (check the evidence table above first), or to flag a problem with one we have. Every submission is reviewed; if it holds up, the grade updates and shows in Science Changes Its Mind.
Opens a short form. You'll sign in with Google so submissions are tied to a real account — we don't display your identity, and we only accept a link we can verify (PubMed, DOI, ClinicalTrials.gov).
Educational only, not medical advice. Grades and scores reflect published evidence weighted by study design and quality; see the methodology.