Does TRT improve mood?
A little, on average, if your testosterone is truly low. TRT and mood are linked, but the effect in trials is smaller than many men expect. It isn’t a treatment for major depression.
This guide covers what the evidence shows, feeling by feeling: low mood, anxiety, irritability and swings between shots. It’s part of our starting TRT guide. It’s general information, not advice about your own treatment.
If you feel hopeless or have thoughts of harming yourself, call or text 988 (the 988 Suicide and Crisis Lifeline) right away, or call 911 in an emergency. Tell your prescriber about any new or worse depression, anxiety or mood change.
What do the big trials show about TRT and mood?
The biggest review pooled 27 randomized trials with 1,890 men. Testosterone reduced depressive symptoms a little more than placebo. The authors called for more trials that study depression as the main goal.
Men on testosterone in those trials weren’t more likely to drop out than men on placebo. An earlier review found the benefit in men with low testosterone, but not in men whose levels were normal. It was also less clear in trials where men averaged over 60.
The large trials point the same way. In the TRAVERSE trial of 5,204 men aged 45 to 80 with low testosterone, treatment brought modest gains in mood and energy. Sleep quality and thinking didn’t improve.
About half the men in TRAVERSE had significant depressive symptoms at the start. Only 49 met strict criteria for a long-lasting, low-grade depression. In that small group, testosterone made no clear difference, possibly because there were too few men to tell.
In the Testosterone Trials of 790 men aged 65 and older, men on testosterone reported slightly better mood and fewer depressive symptoms. Energy, the main thing measured, didn’t improve.
Not every review agrees. A review commissioned by the Endocrine Society looked at 4 strict trials with 1,779 men and found no effect on mood. A pooled study of individual patients also found no change on a standard depression score.
So the fair summary is this. On average, mood gets a small lift in men with clearly low testosterone. Some men feel a real change, and many feel little.
Can TRT treat depression?
No, not on its own. In a trial of 100 men with major depression who hadn’t improved enough on an antidepressant, adding testosterone gel worked no better than placebo over 6 weeks. The authors concluded testosterone is not generally effective for depressed men.
The Endocrine Society agrees. It says testosterone doesn’t improve depressive symptoms in men with clinical depression. It adds that the lift in mood in older men is small.
On average, testosterone lifts mood a little in men with low testosterone, but it doesn’t treat major depression.
Milder, long-lasting low mood may be different. Two small trials in men with low or borderline testosterone and mild, lasting depression found more men recovered on testosterone than on placebo. One had 33 men and the other 23, and the Endocrine Society calls the evidence for depressive symptoms in middle-aged and older men limited.
If you have depression, keep seeing whoever treats it. TRT can sit alongside that care, but it doesn’t replace it.
Is it low testosterone, depression or both?
They overlap, which makes this hard. Low mood, low energy and poor motivation all appear on the Endocrine Society’s list of vague symptoms of low testosterone. The same signs appear on the National Institute of Mental Health’s list for depression.
Depression in men doesn’t always look like sadness. Men may seem angry, irritable or restless instead. They may sleep badly, wake too early or sleep too much.
Doctors usually diagnose depression when symptoms last most of the day, nearly every day, for at least 2 weeks. If that sounds like you, ask about depression directly, whatever your testosterone level.
The Endocrine Society lists these as less specific symptoms, so stress, tiredness or depression can cause them too. In a study of older men followed for about 9 years, very low testosterone was linked to a higher chance of depression later. That’s a link, not proof of cause.
That’s why prescribers check for depression before blaming hormones. If your mood was low before TRT, it’s worth treating that directly too.
Can TRT cause anxiety?
The evidence is mixed. A 2026 systematic review of 11 small trials found inconsistent effects of testosterone on anxiety.
Labels still list anxiety. The cypionate injection label lists anxiety and depression among reported reactions. Gel and long-acting injection labels list anxiety and nervousness among reports made after approval.
A reported reaction isn’t proof the drug caused it. Anxiety is common, and the trials were small and short.
An anxiety disorder has its own signs.
The National Institute of Mental Health describes worry that’s hard to control on most days for at least 6 months. People may feel on edge, restless or irritable, and sleep badly. If you mean you dread the needle, that’s a different worry, and your prescriber or nurse can help with it.
Can TRT make you irritable or angry?
At normal replacement levels, usually not. In a small study of 51 men with low testosterone, anger, irritability and sadness fell after treatment started. In another small study, men with normal testosterone given extra testosterone showed no change in aggression or mood.
Those studies had no placebo group, or very few men. Still, the bigger picture agrees. A review of human studies found testosterone’s effect on aggression was weak and not statistically clear.
Very high doses are a different story.
In one trial, men took several times a replacement amount for 6 weeks. Most showed little change, but 12% became mildly hypomanic and 4% markedly so. Hypomania means an unusually high, driven or irritable mood.
Another trial gave 43 healthy young men very high doses for 10 weeks. It found no rise in anger compared with placebo. The authors noted that still higher doses might affect men with existing mental health problems.
Labels list these reactions too. In one long-acting injection trial, mood swings were among the reasons some men stopped.
In single trials, irritability, mood swings and aggression each appeared in 1 to 3% of men. On one gel label, 2.6% reported mood swings, impatience, anger or aggression, against none in a small placebo group of 40.
Can your mood change between injections?
Some men say so, and guidelines take it seriously. The Endocrine Society lists fluctuations in mood or libido as a possible effect of injections. Some men describe a dip toward the end of the cycle, which some prescribers call a crash.
But research on mood across the days between shots is limited. In one small study of healthy men, a single large long-acting injection raised self-rated anger-hostility scores a little over the next two weeks, without more aggressive behavior. Estradiol changes weren’t linked to the mood changes.
Your own data is the best way to see a pattern. Our guide to trough and peak levels explains why the number at your trough may not match how you feel. Our draw-date planner helps you time a test at the right point in your cycle.
Is it your estradiol?
Probably not as often as online forums suggest. In a study of older men followed for years, estradiol wasn’t linked to depression. In the Testosterone Trials, estradiol at the start wasn’t linked to depression scores either.
No trial has tested whether changing estradiol improves mood in men on TRT. Our page on estradiol explains what the marker means and why moodiness has many causes. Don’t take anything to lower estradiol unless your prescriber advises it.
Could it be sleep or something else?
Often, yes. TRT can make sleep apnea worse, especially in men who are overweight or have lung disease. Poor sleep then drags down mood, focus and patience.
In TRAVERSE, mood improved a little but sleep quality didn’t. If your mood is flat, a sleep check may help more than a hormone change. Daytime sleepiness from sleep apnea can make it harder to focus and react.
| What you notice | Possible causes to ask about |
|---|---|
| Low mood most days for 2 weeks or more | Depression, low testosterone, poor sleep, stress |
| Daytime sleepiness, loud snoring, morning headaches | Sleep apnea, which TRT can worsen |
| Irritable a few days after each shot | Swings between doses, stress, poor sleep |
| Worry most days for months | An anxiety disorder |
| Low mood after stopping TRT | Testosterone falling back to low levels |
What happens to mood if you stop TRT?
Low mood can return. In a study of 147 men who paused long-term testosterone, symptom scores worsened until treatment restarted.
In one large survey, men who had recently used non-prescribed androgens reported more depression and anxiety. A UK specialist society noted that low mood and anxiety can last even after hormone levels recover. Our guide to stopping TRT covers the steps and what to expect.
How do you track your mood on TRT?
A simple daily log works best. Rate your mood from 1 to 5 at the same time each day. Add a mark on injection days, and note poor nights of sleep.
Start before your first dose if you can, so you have a baseline. In one large gel study, mood improved most by day 30 and didn’t improve further after that. A month of entries gives you a fair before and after.
Keep the log short so you stick with it. One number for mood, one for irritability and a note on sleep take a few seconds. Over weeks, those small entries show trends a single bad day can hide.
Bring the log to your appointments. It turns “I feel off” into something your prescriber can act on. Never change your dose or schedule on your own.
When should you call your prescriber or 988?
Call your prescriber soon if you notice new or worse depression, anxiety, anger or big mood swings. One injectable’s label carries a specific warning about depression and suicidal thoughts. It advises that patients and caregivers seek medical attention for new or worse depression, anxiety or other mood changes.
Call or text 988 any time you feel hopeless or have thoughts of harming yourself. It’s free and open 24 hours a day. In an emergency, call 911.
Before starting, tell your prescriber about any history of depression, bipolar disorder or other mental health care. That history helps them choose how closely to follow your mood.
What should you ask your prescriber about TRT and mood?
- Could my low mood come from something other than low testosterone?
- How will we know if TRT is helping my mood?
- Could my sleep be part of the problem, and should I be checked for sleep apnea?
- What should I do if my mood dips between shots?
- What mood changes should make me call you right away?