Quick answer: Yes, but not all stress works the same way, and how stress affects testosterone levels depends heavily on duration. Acute physiological stress, like a hard training block, illness, or a rough week of sleep, causes a temporary dip in testosterone that tends to recover once you do. Chronic psychological stress, the kind that doesn't let up for months, works through different and more persistent pathways, and the evidence for lasting suppression, sometimes reaching the level of a diagnosable testosterone deficiency, is stronger here. Same hormone, genuinely different mechanisms and different odds of bouncing back.
"Stress lowers testosterone" gets said constantly, seldom with a follow-up: what kind of stress, for how long, and does it come back? Those details change the answer.
Acute Stress vs. Chronic Stress: Two Very Different Kinds
Physiological stress (a form of acute stress). This is a direct challenge to your body's internal balance, things like intense exercise, sleep deprivation, illness, or calorie deficit. Your body registers it as a homeostatic problem to solve, triggering an acute psychological and physical stress response that's usually short-lived.
Psychological stress, which can be either acute or chronic. This is processed through perception and emotion, not a direct physical threat, things like ongoing work pressure, financial strain, grief, or trauma. Conditions involving chronic psychological stress, including post-traumatic stress disorder (also written as post-traumatic stress disorder, PTSD) and borderline personality disorder, have been studied for their effects on cortisol levels and the body's stress response more broadly. Psychological stressors of this kind are filtered through higher-order brain regions before your body responds, and even acute psychological stress, like a single high-pressure event, can trigger a measurable hormonal response.
A 2026 narrative review in the International Journal of Impotence Research makes this exact distinction central to understanding how stress affects testosterone levels: the two stress types can activate some of the same hormonal pathways, but the duration and pattern of that activation produce different outcomes. Interestingly, some research on acute, competitive psychosocial stress increases testosterone transiently, in contrast to the sustained decrease seen with chronic stress, a nuance often missed in the simplified "stress lowers testosterone" narrative.
Can Stress Affect Testosterone Production? How It Affects Testosterone Levels via Leydig Cells and Gene Expression
Military training research is where a lot of this data comes from, since it produces intense, well-measured physiological stress in a controlled setting. One study of soldiers completing an arduous week-long course found testosterone dropped by roughly 70% and recovered gradually over about a week. Physical performance, by contrast, recovered more slowly; jump height was still measurably below baseline even after two weeks. The hormone disturbance and the performance decline didn't move together; performance actually outlasted the hormonal recovery.
Here's a detail worth knowing: a systematic review and meta-analysis of 14 military training studies found a significant testosterone decrease across the pooled data, without a significant change in cortisol levels. That's a useful, non-obvious finding; it suggests factors like energy deficit or sleep deprivation can suppress the reproductive hormone axis on their own, not only through the classic "excess cortisol spikes and testosterone drops" story most people have heard.
The Hypothalamic Pituitary Adrenal Axis and Your Body's Stress Response
Stress activates the hypothalamic-pituitary-adrenal (HPA) axis, your body's stress response, starting with corticotropin-releasing hormone (CRH) from the hypothalamus, which triggers adrenocorticotropic hormone (ACTH) from the pituitary gland, which in turn signals the adrenal glands to release cortisol, the primary stress hormone. This can suppress the hypothalamic-pituitary-gonadal (HPG) axis, sometimes written as the pituitary-gonadal HPG axis or hypothalamic-pituitary-gonadal axis, the pathway that ultimately drives testosterone production and other sex hormones. That pathway starts with gonadotropin-releasing hormone (GnRH) and luteinizing hormone, which normally signal the Leydig cells in the testes to carry out testosterone synthesis and maintain serum testosterone levels within a normal testosterone level range. Stress hormones can interfere with gene expression in Leydig cells, blunting their ability to trigger testosterone production even when the rest of the signal is intact. This suppression is real, but it's generally reversible with recovery from acute stress; chronically elevated cortisol levels are a different story, discussed below.
Does Exercise Count as Stress That Lowers Testosterone?
It's complicated, and the dose matters more than the activity itself.
A survey of over 1,000 endurance-trained men found those specifically training for a marathon had libido scores about 20% lower than endurance runners doing more general training, not marathon-specific work, an effect researchers connect to relative energy deficiency from sustained high-volume training, similar in pattern to the acute fatigue response seen in intense military training. This kind of chronic physical stressor can decrease testosterone levels even in otherwise healthy, fit men.
Erectile Dysfunction and Exercise: What the Trials Show
At the same time, a meta-analysis of 11 randomized controlled trials found that starting an aerobic exercise program improved erectile function scores compared to non-exercising control groups, in men who had underlying conditions like obesity, diabetes, or prior cardiovascular disease or prostate surgery. This suggests regular resistance training and aerobic activity can support healthy testosterone levels and sexual health, rather than working against them, when dosed appropriately, though exercise alone isn't a treatment for diagnosed erectile dysfunction or sexual dysfunction.
Put together: moderate, recovered training looks broadly supportive of hormonal balance and sexual health. Pushing volume or intensity without adequate recovery is where the acute-stress-suppression pattern shows up instead, and where the body's stress response starts working against you rather than for you.
What Chronic Psychological Stress Does Differently
This is where the "depends on what kind" answer really matters.
Chronic stress is often described through the concept of allostatic load, the cumulative wear on the body from stress-response systems staying activated far longer than they're built for. Unlike a single hard week, this doesn't fully reset with a good weekend of recovery. Chronic, ongoing stress also keeps the autonomic nervous system, the body's automatic fight-or-flight and rest-and-digest control system, tilted toward a persistent stress state, which compounds the hormonal picture and can contribute to metabolic dysfunction and metabolic syndrome over time.
- One large cross-sectional study of Danish men found the highest-stress group had 30–40% lower sperm concentration and total sperm count than men reporting intermediate perceived stress levels. Notably, that same study found stress wasn't significantly correlated with reproductive hormone levels and reported no significant difference in both testosterone and other reproductive hormones between groups, so the effect shows up in semen quality and sperm count, not necessarily in a measurable testosterone change. Some of this research relies on salivary testosterone levels rather than serum testosterone, which can complicate direct comparisons between studies.
- Chronic stress is linked to a pro-inflammatory state (elevated IL-6 and related markers) that's separately associated with long-term testosterone suppression, cardiovascular disease risk, and broader hormonal imbalance.
- Under chronic stress, HPG axis suppression appears to happen at multiple points along the pathway, not just at the hypothalamic level like acute stress, which is part of why the 2026 review describes chronic-stress-related hormonal and sexual effects as more persistent and less reliably reversible than the acute pattern. This kind of ongoing stress can also affect mental health, and mental health issues themselves can further disrupt hormonal health in a compounding cycle.
None of this is a precise timeline you can apply to yourself. It's a pattern: longer, more diffuse stress tends to produce a more entrenched hormonal picture than a single hard stretch does.
What This Means If You're Trying to Sort Out Low Testosterone
If your stress is acute and identifiable- a brutal training block, a rough illness, a terrible sleep week- the evidence points toward this resolving with recovery and time, not necessarily a medical intervention.
If your stress is chronic- ongoing work pressure, unresolved conflict, prolonged sleep debt, financial strain that doesn't let up- that's a different picture. The mechanisms involved are more entrenched, and "just wait it out" is a less reliable strategy.
Either way, low energy, low libido, or other symptoms that don't track with an obvious acute stressor, or that persist well after it resolves, are worth an actual lab evaluation rather than a guess about which kind of stress is to blame.
Where TRT Fits, and Where It Doesn't
This matters more than it might seem: testosterone replacement therapy is FDA-approved only for men with low testosterone tied to an identifiable underlying medical condition, such as a testicular, pituitary, or hypothalamic problem, confirmed through evaluation. No FDA-approved testosterone product is approved for low testosterone from stress or aging alone, even with a confirmed low lab value.
That distinction matters practically. If chronic stress is genuinely what's suppressing your testosterone, addressing the stress and giving your body time may resolve the picture without medication being the right first step. If evaluation finds a distinct underlying cause, that's a different conversation with your clinician.
Hormone Levels and Healthy Testosterone Levels: Practical Steps That Address Both Stress Types
- Match training recovery volume. If you're pushing hard physically, sleep and nutrition need to keep pace, or you're stacking physical stress and physical stressors without giving your body room to resolve them, which can decrease testosterone levels rather than support healthy testosterone levels.
- Protect sleep specifically. Sleep debt shows up repeatedly across this research as a contributor to hormonal suppression, independent of other stress markers, and poor sleep raises blood pressure and increases the risk for other downstream problems too.
- Address chronic stressors directly, not just their symptoms. Cognitive behavioral therapy and structured stress-management approaches have shown real effectiveness for stress-related sexual and hormonal symptoms in clinical research, not just general wellbeing. Learning to manage stress is as much a part of supporting hormone levels as anything you eat or do in the gym.
- Give acute stress time before assuming it's permanent. A hard week or a demanding training block isn't evidence of a lasting problem on its own.
- Eat a healthy diet with enough healthy fats. Dietary fat is a building block for steroid hormones, including testosterone, so chronically restrictive eating can work against efforts to boost testosterone levels, on top of resistance training's own contribution to muscle mass and hormonal balance.
- Get labs if symptoms persist or don't track with an obvious cause. This is the only way to actually tell what's going on, rather than guessing between "it's just stress" and something that needs evaluation.
Frequently Asked Questions
Does all stress lower testosterone the same way?
No. Acute physiological stress (intense exercise, illness, short-term sleep loss) tends to cause a temporary, reversible dip. Chronic psychological stress works through more persistent pathways and is linked to more entrenched suppression in the research.
Will my testosterone recover on its own after a stressful period?
For acute, time-limited stress, the evidence points toward recovery once the stressor resolves, and you get adequate rest. For chronic, ongoing stress, recovery is less predictable and may depend on actually addressing the underlying stressor.
Does working out lower testosterone?
Moderate, well-recovered exercise is generally associated with better hormonal and sexual health markers. High-volume endurance training without adequate recovery is where research shows a suppressive, fatigue-related pattern instead.
Is cortisol always elevated when testosterone drops from stress?
Not necessarily. Some military training research found significant testosterone decreases without a consistent rise in cortisol, suggesting other factors like energy deficit and sleep loss can suppress the reproductive hormone axis independently.
Can chronic stress cause permanent low testosterone?
"Permanent" isn't established either way, but chronic psychological stress is associated with more persistent and less reliably reversible hormonal and sexual effects than acute stress in the current research, which is different from acute stress's generally recoverable pattern.
Should I get TRT if I think stress is lowering my testosterone?
TRT is FDA-approved only for low testosterone tied to a specific underlying medical condition, not for stress-related or age-related low testosterone alone. If stress is the driver, addressing it is a reasonable first step; a clinician evaluation can help clarify what's actually going on.
How do I know if my stress is "acute" or "chronic"?
Roughly: if you can point to a specific, time-limited cause (a hard training block, an illness, a bad week) and expect it to end, that's acute. If the stressor has been ongoing for months without resolution, that pattern fits the chronic category the research describes.
Get a Clear Picture, Not a Guess
A full evaluation looks at your labs and your actual situation, not just a guess about whether "it's just stress."
Related Reading
- Does Testosterone Help You Sleep Better? The Science Explained
- Testosterone Replacement Therapy (TRT)
Disclaimer
This content is for educational purposes only and does not replace medical advice. It reflects the research available as of publication and may be updated as new evidence emerges. Testosterone therapy and hormone-related decisions should be guided by a licensed healthcare provider.
References
McGonagle E, Thomas J, Marrufo I, et al., Khera M. The effect of stress on testosterone and sexual function. Int J Impot Res. 2026. https://www.nature.com/articles/s41443-026-01279-8
Hamarsland H, Paulsen G, Solberg PA, Slaathaug OG, Raastad T. Depressed physical performance outlasts hormonal disturbances after military training. Med Sci Sports Exerc. 2018;50:2076-2084. https://pubmed.ncbi.nlm.nih.gov/29927875/
Heilbronn B, Doma K, Sinclair W, Connor J, Irvine-Brown L, Leicht A. Acute fatigue responses to occupational training in military personnel: a systematic review and meta-analysis. Mil Med. 2022;188:969-977. https://doi.org/10.1093/milmed/usac144
Nordkap L, Jensen TK, Hansen ÅM, et al. Psychological stress and testicular function: a cross-sectional study of 1,215 Danish men. Fertil Steril. 2016;105:174-187. https://pubmed.ncbi.nlm.nih.gov/26477499/
Khera M, Bhattacharyya S, Miller LE. Effect of aerobic exercise on erectile function: systematic review and meta-analysis of randomized controlled trials. J Sex Med. 2023;20(12):1369-1375.
Hackney AC, Zieff GH, Lane AR, Register-Mihalik JK. Marathon running and sexual libido in adult men: exercise training and racing effects. J Endocrinol Sci. 2022;4(1):10-12. PMID: 36068871.
U.S. Food and Drug Administration. Testosterone Information. https://www.fda.gov/drugs/postmarket-drug-safety-information-patients-and-providers/testosterone-information
