The section most pages skip
What the evidence supports, and what it does not
The Global Consensus reviewed the trial evidence domain by domain and reached three different kinds of answer: this was tested and it worked, this was tested and it did not, and this has not been tested well enough to say. Those are not the same answer, and a page that blurs them is not helping you decide anything.
| What you may be hoping for | What the randomized trial evidence shows | Strength |
|---|
| Low sexual desire with distress (HSDD), after menopause | Improves desire, arousal, orgasm, pleasure and sexual self-image, and reduces sexual distress | Level I, Grade A |
| General wellbeing | “No effect of testosterone therapy on general wellbeing” | Tested — no effect |
| Low mood or depression | “Available data do not show an effect of testosterone on depressed mood” | Tested — no effect |
| Bone density and osteoporosis | “The available data do not support an effect of testosterone treatment on bone mineral density” | Tested — no effect |
| Muscle, strength, body composition | “No statistically significant effect … on lean body mass, total body fat, or muscle strength” | Tested — no effect |
| Memory and concentration | “Insufficient evidence to support the use of testosterone to enhance cognitive performance, or to delay cognitive decline” | Not enough evidence |
| Fatigue and energy | Not an evidence-based indication. The Endocrine Society recommends against testosterone for wellbeing generally | Not an indication |
| Hot flashes and night sweats | No guideline supports testosterone for these. Systemic estrogen therapy is the treatment with the evidence behind it | Not an indication |
| Weight loss | Trials found a small increase of about 0.48 kg (95% CI 0.16–0.79) | Not a weight therapy |
Does testosterone build muscle in women?
Testosterone is anabolic. At high enough doses it builds muscle in anyone. But at the physiologic female doses this page is about, pooled trial data found no statistically significant effect on lean body mass, total body fat, or muscle strength. The dose where you would see real body-composition change is the dose that risks voice deepening and clitoral enlargement — effects the approved product labeling describes as potentially irreversible. That is why it is not the dose we use.
If building strength is the goal, resistance training is the intervention with the evidence behind it. Testosterone at a female dose is not typically high enough to cause significant increases in muscle mass.
What “it works” actually looked like in the trials
The largest analysis of the evidence — 36 randomized controlled trials and 8,480 women, published in The Lancet Diabetes & Endocrinology in 2019 — found that testosterone produced a mean of 0.85 additional satisfying sexual events per month compared with placebo (95% CI 0.52–1.18), alongside improvements in desire, arousal, pleasure, orgasm and sexual self-image, and a reduction in sexual distress.
Roughly one more satisfying sexual encounter a month. That is a real result, statistically solid, and it is a modest one. If a clinic promises you a transformation, they are describing something no trial has measured.
Why a clinic that prescribes testosterone would tell you this
Because the alternative is worse for you. If exhaustion is what brought you here, we would rather look at your thyroid, your sleep, your iron, your medication list and your mood than hand you a cream the trials say will not fix it — and then have you come back in six months no better, having paid for it. Telling you what testosterone does not do is the only honest way to tell you what it does.