Anxiety appears on nearly every low-testosterone symptom list, and it was not a measured endpoint in the trials that would settle it. The large randomized work on testosterone and mental state measured depressive symptoms, mood and energy — not anxiety. So the accurate answer to "does low testosterone cause anxiety" is that the question has not been properly tested, and anyone telling you otherwise is going beyond the evidence.
That is less satisfying than a yes. It is also the only defensible position.
What the evidence does cover
The TRAVERSE trial ran a dedicated analysis of depressive syndromes across all 5,204 participants. Testosterone produced small but statistically significant improvements in mood and energy compared with placebo, in men with and without significant depressive symptoms. It did nothing for cognition or sleep quality.[1]
Mood and anxiety are related but distinct. An improvement in mood is not evidence of an improvement in anxiety, and treating it as such is the overclaim to avoid.
Why the symptoms overlap anyway
There is a plausible mechanism, which is why the association persists despite the missing evidence. Testosterone interacts with systems involved in stress response and mood regulation, and the cortisol axis and the reproductive axis are linked — sustained stress raises cortisol, which suppresses the signalling that drives testosterone production.
That link runs in a direction people often miss: chronic stress lowers testosterone. So a man presenting with anxiety and a low reading may be looking at a consequence rather than a cause.
What produces this picture more reliably
Several causes produce anxiety-like symptoms and are worth excluding before attributing them to a hormone:
Thyroid dysfunction. Hyperthyroidism in particular produces restlessness, racing heart and a sense of being on edge — a close mimic of anxiety, and simple to test.
Sleep debt and apnea. Fragmented sleep degrades emotional regulation directly and independently lowers testosterone.
Alcohol and caffeine. Both are common contributors and frequently discounted by the person consuming them.
An anxiety disorder itself. It is a treatable condition with established therapies, and hormone status does not change that.
Chronic stress. Which, per above, may be lowering the testosterone rather than the reverse.
Where testosterone fits
If anxiety is your dominant complaint, testosterone is not the answer the evidence supports — it should be assessed on its own terms.
If anxiety sits within a broader pattern — fatigue, reduced libido, low motivation, changes in body composition — then a hormone panel is reasonable, because that cluster is what low testosterone reliably produces. Any improvement in how you feel would most likely come through mood and energy, where there is measured evidence, rather than through anxiety specifically.
Frequently asked questions
Will TRT help my anxiety? Unknown on the current evidence. Anxiety was not an endpoint in the major trials. Mood and energy improved modestly;[1] whether that translates to anxiety has not been tested.
My anxiety improved after starting treatment. What happened? Possibly better sleep, better mood, or relief from other symptoms. Possibly placebo, which is substantial in this area. The trials cannot tell you which applies to you, and that uncertainty is honest rather than evasive.
Should I get tested if anxiety is my main symptom? If it is the only symptom, start with an anxiety assessment. If it comes with the wider low-testosterone cluster, test both — and treat the anxiety on its own terms regardless of the result.
Getting it looked at properly
Anxiety deserves assessment in its own right. A hormone panel runs alongside that when the broader symptom pattern warrants it — 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: testosterone and depression and does testosterone improve sleep?
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
Practical questions about membership, labs and using the spray are answered in the Learn Hub FAQ.
Hypospray® is a registered trademark. Keen Meds Inc. utilizes the Hypospray® topical transdermal delivery platform under license.