Testosterone modestly improves mood in men with low testosterone — and the operative word is modestly. The TRAVERSE trial ran a dedicated depression analysis across all 5,204 participants and found small but statistically significant improvements in mood and energy, with no effect on cognition or sleep quality. In the subgroup with rigorously diagnosed persistent depressive disorder, testosterone was not significantly better than placebo.[1]
That is a more useful answer than either "testosterone fixes depression" or "it does nothing."
What low mood looks like alongside low testosterone
The presentation is rarely dramatic sadness. Men describe something flatter:
- Reduced motivation — tasks that were routine now require deliberate effort
- Irritability, a shorter fuse than usual
- Loss of interest in things that used to be rewarding
- A sense of going through the motions rather than acute distress
The overlap with hypogonadism is substantial, which is exactly the problem: the same description fits depression, low testosterone, poor sleep, or all three at once.
What the trial found, in detail
TRAVERSE examined three groups, and the differences between them are the whole story.[1] The same analysis read as one of the trial's sub-studies is in TRAVERSE and mood.
All 5,204 participants. Testosterone produced small improvements in mood and energy compared with placebo — in men with and without significant depressive symptoms. No benefit for cognition or sleep quality.
The 2,643 men with meaningful depressive symptoms (PHQ-9 above 4). Modest but statistically significant improvements in mood and energy versus placebo. Again, nothing for cognition or sleep.
The 49 men who met strict criteria for low-grade persistent depressive disorder. No significant difference on any measure. Changes were numerically larger on testosterone, but the differences were not statistically significant.
The authors' own summary: testosterone "modestly improves mood and energy in men with hypogonadism with and without depressive symptoms but the treatment effect is small."[1]
Why "small but real" is the honest framing
Two failure modes to avoid.
Overclaiming. Testosterone is not an antidepressant, and the strict-diagnosis subgroup is the tell — the men with the most clearly defined depressive disorder were the ones who did not separate from placebo. If you have diagnosed depression, testosterone is not the treatment for it.
Dismissing it. Across thousands of men, the improvement in mood and energy was consistent and statistically real. For a man whose testosterone is genuinely low, that improvement is one of the more reliable things treatment does — more reliable than what the trials found for cognition, which was nothing at all.
What to rule out alongside
Low mood has several common causes that respond to treatment, and more than one can be present:
Depression itself. It is a treatable condition with established therapies. Hormone status does not change that, and a hormone panel is not a substitute for a mental health assessment.
Sleep disruption and apnea. Fragmented sleep degrades mood directly and lowers testosterone. TRAVERSE found testosterone did not improve sleep — so sleep needs treating on its own terms.
Thyroid dysfunction. Hypothyroidism produces low mood, fatigue and cognitive slowing together, and is straightforward to test.
Alcohol and medication. Both are common contributors and frequently overlooked.
Frequently asked questions
Will testosterone treat my depression? Not on the current evidence. In the men with rigorously defined persistent depressive disorder, testosterone was no better than placebo.[1] It improved mood modestly across the broader population, but that is not the same as treating a depressive disorder.
My mood improved on TRT — was that real or placebo? Both are plausible, and the trial cannot tell you which applies to you. The measured effect over placebo was real but small, so a substantial part of what men experience is likely non-specific. That does not make it worthless; it makes it worth being honest about.
Should I stop antidepressants if I start testosterone? No — that is a decision for the prescriber who manages them. Nothing in the evidence supports substituting one for the other.
Getting the order right
If low mood sits alongside fatigue, reduced motivation, low libido or changes in body composition, testosterone is worth measuring. If low mood is the dominant complaint, it deserves assessment in its own right — and the hormone panel runs alongside that, not instead of it.
Keen connects you with a licensed clinical team for a telehealth consultation and lab review. If your testosterone is clinically low, treatment is Keen Testosterone Spray Rx — a once-daily topical spray powered by Hypospray® transdermal delivery.
Related reading in this series: low testosterone and fatigue and brain fog and low testosterone.
References
1 source
- Bhasin S, Seidman S, Travison TG, et al. Depressive Syndromes in Men With Hypogonadism in the TRAVERSE Trial: Response to Testosterone-Replacement Therapy. J Clin Endocrinol Metab. 2024;109(7):1814–1826. doi:10.1210/clinem/dgae026 · PMID 38205962
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