Does Low Testosterone Cause Sleep Problems in Men?

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Low testosterone and sleep disruption reinforce each other. Slow-wave sleep drives nocturnal testosterone synthesis — when an experiment selectively suppressed slow-wave sleep without reducing total sleep time, morning testosterone dropped (p = 0.017). Sleep fragmentation delays the nocturnal testosterone surge by up to five hours. And total sleep deprivation suppresses testosterone by a pooled effect size of SMD −0.67 in a meta-analysis of 18 studies. The relationship runs in both directions.

Men experiencing fragmented sleep and lower energy often don’t connect those changes to testosterone. Yet the relationship between testosterone and sleep is bidirectional — each degrades the other — and the mechanisms are now documented in controlled experiments, not just correlational data.

This article covers the sleep stages that drive testosterone production, quantifies how much sleep loss suppresses testosterone, maps the sleep architecture changes that accompany low testosterone, and explains why the feedback loop worsens with age. Testosterone is one of several contributors to sleep disruption in men; cortisol dysregulation, GABA deficiency, inflammatory cytokines, and circadian disruption each fragment sleep through different mechanisms. For the broader picture, see Hormonal Sleep Disruption in Men.

How Does Testosterone Production Depend on Sleep?

Testosterone production depends on slow-wave sleep for synthesis and REM sleep for surge timing. When researchers selectively suppressed slow-wave sleep using acoustic stimulation — without reducing total sleep time — morning testosterone dropped (Ukraintseva et al., 2018). Sleep fragmentation delayed the nocturnal testosterone surge onset by nearly five hours, and the surge appeared only in men who achieved REM episodes (Luboshitzky et al., 2001).

The causal evidence linking slow-wave sleep to testosterone synthesis comes from a randomized crossover study of 12 healthy men. Selective slow-wave sleep suppression was achieved using acoustic tone stimulation during polysomnography, reducing slow-wave sleep duration by 54.2% without affecting total sleep time or sleep efficiency. Morning testosterone was lower following slow-wave sleep suppression compared to the unmanipulated control night (p = 0.017). 17-alpha-hydroxyprogesterone — a direct precursor reflecting gonadal steroidogenesis — was also reduced (p = 0.011). Cortisol, androstenedione, and DHEA showed no differences between conditions, ruling out generalized HPA-axis disruption as the cause. The steroidogenic machinery that produces testosterone depends on slow-wave sleep, and suppressing slow-wave sleep impairs that pathway even when the person sleeps a normal number of hours (Ukraintseva et al., 2018).

Distribution of PSQI scores among AAS users and weightlifting controls
Distribution of PSQI scores among the AAS group and WLC. Y axis represents global PSQI score. Dotted line indicate cut-off value > 5. PSQI: Pittsburg Sleep Quality Index, WLC: weightlifting controls, AAS: anabolic androgenic steroid group. Klonteig, S., Scarth, M., & Bjornebekk, A. (2024). Sleep pathology and use of anabolic androgen steroids among male weightlifters in Norway. BMC Psychiatry, 24(1), 62. https://pubmed.ncbi.nlm.nih.gov/38254047/

The surge timing mechanism is separate. In a study of 10 healthy men using an ultrashort sleep-wake paradigm to experimentally fragment sleep, testosterone was sampled every 20 minutes from 7 PM to 7 AM. Under fragmented sleep, the characteristic nocturnal testosterone surge was delayed from approximately 10:35 PM to 3:24 AM — a delay of nearly five hours. The surge appeared in only 4 of 10 subjects, and those 4 were the men who achieved REM sleep episodes. Mean testosterone levels over the full 12-hour period were similar between fragmented and continuous sleep, indicating the disruption affects timing and pulsatility, not total daily production. REM sleep is a necessary condition for the nocturnal testosterone pulse (Luboshitzky et al., 2001).

The two mechanisms are complementary. Slow-wave sleep drives testosterone synthesis through the steroidogenic pathway. REM sleep permits the pulsatile release that defines the nocturnal testosterone surge. Conditions that reduce either stage — sleep apnea, insomnia with frequent awakenings, aging-related sleep architecture changes — impair testosterone output through one or both of these pathways.

How Much Does Sleep Loss Lower Testosterone in Men?

A meta-analysis of 18 controlled studies found that total sleep deprivation (24+ hours) suppresses testosterone with a pooled effect size of SMD −0.67. Partial sleep restriction — the pattern many men experience — did not reach statistical significance in the pooled data (SMD −0.22, p = 0.13). At the population level, the sleep-testosterone relationship varies by age, with men over 40 showing the strongest associations (Su et al., 2021; Hernandez-Perez et al., 2024).

The meta-analysis pooled data from 18 controlled studies involving 252 healthy men to quantify how sleep deprivation severity affects serum testosterone. Total sleep deprivation lasting 24 or more hours produced a pooled effect of SMD −0.67 (95% CI: −0.93 to −0.42, p < 0.001). After 40-48 hours of total deprivation, the effect increased to SMD −0.74 (p = 0.002) — a dose-dependent relationship between sleep loss duration and testosterone suppression. Partial sleep deprivation — restricting sleep to 4-5 hours rather than eliminating it — produced a pooled effect of SMD −0.22 (95% CI: −0.50 to 0.06, p = 0.13), which did not reach statistical significance (Su et al., 2021).

This distinction matters. The claim that “one bad night drops testosterone by 10-15%” is not supported by the pooled evidence for partial restriction. Measurable suppression is crossed at complete sleep elimination for 24 or more hours — not at the 5-6 hour restriction common in modern life.

Population-level data adds age-dependent complexity. An analysis of 8,748 U.S. adults from NHANES (2011-2016) found age-stratified associations between sleep duration and testosterone. Young men aged 20-40 who slept 6 hours or less had elevated testosterone (OR 3.62, 95% CI: 1.37-9.53) — a counterintuitive finding possibly reflecting acute compensatory cortisol-LH interactions in younger men. Middle-aged men aged 41-64 who slept 9 or more hours had lower testosterone (OR 2.03, 95% CI: 1.10-3.73), consistent with long sleep in older men reflecting underlying illness or hypogonadism-driven fatigue rather than causing lower testosterone (Hernandez-Perez et al., 2024).

Controlled experiments show a dose-response relationship for severe deprivation; population-level data shows the relationship is age-dependent and confounded by adiposity, comorbidities, and lifestyle. Chronic severe sleep restriction suppresses testosterone. Moderate restriction produces a smaller acute effect that compounds over time in ways individual-night studies may not capture.

What Sleep Problems Does Low Testosterone Cause in Men?

In a study of 1,312 older men with polysomnography, lower testosterone was associated with more frequent nocturnal awakenings, lower sleep efficiency, and increased severity of sleep-disordered breathing. A separate claims database analysis found insomnia, sleep apnea, and circadian rhythm disruption all associated with testosterone deficiency — with circadian disruption carrying the strongest association (OR 2.63) (Barrett-Connor et al., 2008; Agrawal et al., 2024).

The largest cohort study linking testosterone to objectively measured sleep enrolled 1,312 community-dwelling men aged 65 and older from six U.S. study centers. Baseline testosterone was measured, and sleep was assessed approximately 3.4 years later using multi-day actigraphy (minimum three consecutive 24-hour periods) and one-night polysomnography. Men with lower total testosterone had lower sleep efficiency and more nocturnal awakenings. Lower testosterone was also associated with a higher apnea-hypopnea index and more sleep time with oxygen saturation below 90%, linking androgen deficiency to sleep-disordered breathing severity. The study did not find associations between testosterone levels and sleep stage distribution, including slow-wave sleep (Barrett-Connor et al., 2008).

Longitudinal sleep quality scores across steroid use and withdrawal phases
Y axis represents the total JSS score and the x axis presents dates of measurement split in three subplots representing the groups (WLC; blue, AAS on; green and AAS off; dark green). WLC: weightlifting controls, AAS: anabolic androgenic steroid group. Klonteig, S., Scarth, M., & Bjornebekk, A. (2024). Sleep pathology and use of anabolic androgen steroids among male weightlifters in Norway. BMC Psychiatry, 24(1), 62. https://pubmed.ncbi.nlm.nih.gov/38254047/

A caveat: when BMI or waist circumference was included as a covariate, these associations were attenuated. Adiposity mediates much of the testosterone-sleep relationship in older men. In a secondary analysis restricted to men with BMI above 27, testosterone retained associations with increased awakenings after sleep onset and reduced sleep efficiency — but the primary driver in the full cohort was body composition, not testosterone alone. This is directly relevant to the belly fat-testosterone-sleep connection, where adiposity acts as an amplifier of the testosterone-sleep feedback loop (Barrett-Connor et al., 2008).

The U.S. claims database analysis examined men aged 40-70 with documented sleep disorders against propensity-matched controls. Testosterone deficiency was associated with insomnia (OR 1.74), sleep apnea (OR 1.66), and circadian rhythm sleep disorder (OR 2.63). The gradient is informative: circadian rhythm disruption carried the strongest association with testosterone deficiency, higher than insomnia or sleep apnea. Disruption of sleep timing may be more damaging to androgen production than intermittent hypoxia or sleep fragmentation alone (Agrawal et al., 2024).

Low testosterone does not produce a single sleep complaint. Across these two studies, it maps to increased awakenings, lower sleep efficiency, disordered breathing, and circadian disruption — and much of the effect in older men runs through body composition as an intermediary.

Night sweats — a common complaint in men with lower testosterone — are believed to involve a narrowed thermoneutral zone, the same vasomotor mechanism observed in menopause-related hot flashes. When testosterone declines, the hypothalamic temperature-regulating center may become more sensitive to small body temperature fluctuations, triggering sweating and flushing episodes during sleep. This mechanism is extrapolated from estrogen-withdrawal research in women; direct experimental evidence in testosterone-deficient men is limited. These episodes contribute to the fragmented sleep architecture documented in the polysomnography data.

Why Does the Testosterone-Sleep Feedback Loop Get Worse With Age?

Neural circuits that regulate sleep are themselves hormone-sensitive. The suprachiasmatic nucleus (the brain’s circadian pacemaker) contains androgen receptors and responds to testosterone levels. Meanwhile, the ventrolateral preoptic nucleus (a sleep-promoting region) is sensitive to reproductive hormones, particularly estrogen. As testosterone and other reproductive hormones change with age, these circuits lose regulatory capacity. Age-related REM reduction correlates with falling testosterone, and reproductive aging reshapes sleep architecture across the lifespan (Ralston et al., 2024; Andersen & Tufik, 2008).

A 2024 mechanistic review identified neural structures through which reproductive hormones regulate the sleep-wake cycle. The suprachiasmatic nucleus — the brain’s master circadian pacemaker — contains androgen receptors, with male mice showing a larger number of androgen receptor-expressing neurons in the SCN than females. Separately, the ventrolateral preoptic nucleus — a region that promotes and sustains sleep — is sensitive to reproductive hormones, with estradiol’s wake-promoting effects driven by inhibition of sleep-active neurons in the VLPO. When testosterone declines, the SCN loses input from a hormone that helps regulate circadian timing. This positions testosterone not only as a product of sleep but as a regulator of at least one neural circuit that governs sleep (Ralston et al., 2024).

The review also identified an additional dimension: sex chromosome effects. XX versus XY patterns in sleep-wake architecture persist even without circulating reproductive hormones, as demonstrated in gonadectomized rodent models. Chromosomal sex contributes to sleep regulation independently of androgens. But the hormonal environment — particularly testosterone in men — shapes how those baseline chromosomal patterns express across the lifespan. Puberty and reproductive aging are periods where hormonal changes converge with chromosomal effects to reshape sleep architecture (Ralston et al., 2024).

The bidirectional review by Andersen and Tufik (2008) documented the aging trajectory. Age-related REM sleep decline correlates with falling testosterone. Nocturnal testosterone levels rise during sleep and fall upon waking, with peak plasma concentrations coinciding with the onset of the first REM episode. As REM sleep declines with age, the testosterone peak diminishes. When the testosterone peak diminishes, the neural circuits governing sleep lose androgen input. Less REM produces less testosterone, and less testosterone produces further REM reduction (Andersen & Tufik, 2008).

The feedback loop that maintains testosterone-sleep homeostasis in younger men weakens with age. Each decline accelerates the other. This is compounded by age-related increases in adiposity — which, as the Barrett-Connor data showed, mediates a large portion of the testosterone-sleep association in older men — and by changes in GABA function, which further reduce sleep maintenance capacity. The andropause and insomnia connection covers the compound hormonal aging picture in men over 50.

Testosterone is one contributor to sleep disruption, but multiple causes often overlap. Cortisol dysregulation, GABA deficiency, inflammatory cytokines, and circadian disruption can each independently fragment sleep — and each may compound the hormonal damage. Identifying which causes are involved is a useful next step.

Find out which causes might be driving your 3am wakeups →

Frequently Asked Questions

Does Sleeping More Increase Testosterone?

Sleeping more does not linearly increase testosterone. The NHANES data showed that men aged 41-64 who slept 9 or more hours had lower testosterone (OR 2.03) — likely because extended sleep in older men reflects underlying illness or hormonal changes rather than causing it. What matters is adequate sleep with intact slow-wave and REM architecture, not maximum duration (Hernandez-Perez et al., 2024).

The assumption that more sleep produces more testosterone is not supported by population data. In the NHANES analysis of 8,748 adults, the relationship between sleep duration and testosterone was not linear. Men aged 41-64 sleeping 9 or more hours had an odds ratio of 2.03 for low testosterone — the same direction as short sleepers, creating a J-shaped curve. Extended sleep in this age group is more likely a marker of fatigue from underlying hypogonadism, metabolic disease, or deconditioning than a cause of testosterone decline (Hernandez-Perez et al., 2024).

The variable that matters is sleep architecture quality — whether sleep includes sufficient slow-wave sleep for steroidogenesis and REM sleep for pulsatile testosterone release — not total hours in bed.

Does One Night of Poor Sleep Affect Testosterone?

In pooled data from controlled studies, partial sleep restriction did not reach statistical significance for testosterone suppression (SMD −0.22, p = 0.13). Total sleep deprivation for 24 or more hours did produce a measurable drop (SMD −0.67, p < 0.001). One shortened night is unlikely to suppress testosterone to a degree that would affect health or function, but chronic restriction compounds in ways single-night studies may not capture (Su et al., 2021).

The meta-analytic evidence separates acute partial restriction from total deprivation. Restricting sleep to 4-5 hours for one night produces a pooled effect that does not reach significance across studies. Total elimination of sleep for 24 or more hours produces a measurable, dose-dependent suppression (Su et al., 2021).

The commonly cited “one week of 5-hour nights drops testosterone by 10-15%” comes from a single study. Pooled data across multiple studies with varying designs shows the acute effect of partial deprivation is smaller than that figure implies. Chronic sleep restriction may compound over time through accumulating slow-wave sleep debt and progressive cortisol elevation, but the acute single-night effect of partial restriction is modest.

Is Testosterone Released During Rapid Eye Movement or Deep Sleep?

Both stages contribute through different mechanisms. Slow-wave sleep (deep sleep) drives the steroidogenic process — selectively suppressing slow-wave sleep lowers morning testosterone even when total sleep is preserved (Ukraintseva et al., 2018). REM sleep controls the timing of the nocturnal testosterone surge — men who do not achieve REM episodes during fragmented sleep show no surge at all (Luboshitzky et al., 2001).

The distinction between slow-wave and REM contributions was documented by two complementary experiments. The selective slow-wave sleep suppression study (Ukraintseva et al., 2018) showed that reducing slow-wave sleep by 54.2% — while preserving total sleep time — lowered morning testosterone and 17-alpha-hydroxyprogesterone. Steroidogenesis — the pathway that converts cholesterol precursors to testosterone — depends on slow-wave sleep.

In the sleep fragmentation study (Luboshitzky et al., 2001), the nocturnal testosterone surge — the characteristic rise that normally begins around 10:30 PM — appeared only in subjects who achieved REM episodes. Without REM, testosterone levels remained flat through the night, with no pulsatile surge. Slow-wave sleep drives synthesis; REM sleep gates the surge timing.

Can Both Too Much and Too Little Testosterone Disrupt Sleep?

A controlled study of male weightlifters found that both supraphysiological androgen exposure (from anabolic steroid use) and the withdrawal state (when testosterone crashes to below-physiological levels) impaired sleep quality. Sleep was worse during withdrawal than during active use, suggesting an optimal testosterone range for healthy sleep architecture (Klonteig et al., 2024).

The study compared 68 male weightlifters with previous or current long-term anabolic-androgenic steroid use against 58 non-using weightlifting controls. Among steroid users, 66% reported sleep problems as a direct side effect of use, and 38% had used prescription sleep medication — rates much higher than controls. Sleep quality on the Pittsburgh Sleep Quality Index was worse across multiple subscales in users versus controls (p < 0.001) (Klonteig et al., 2024).

The longitudinal component tracked 22 participants across approximately six months of active steroid use and subsequent withdrawal. Sleep quality was worse during withdrawal — when testosterone drops to below-physiological levels — than during active use (p < 0.001). This within-person data rules out confounding by stable individual differences and demonstrates that changes in androgen status cause changes in sleep quality in both directions (Klonteig et al., 2024).

Both supraphysiological and sub-physiological testosterone degrade sleep — healthy sleep architecture requires testosterone within a normal physiological range. The testosterone replacement therapy and sleep article covers the evidence on whether exogenous testosterone restores or further disrupts sleep.

How Does Low Testosterone Cause Night Sweats in Men?

Night sweats in men with low testosterone are believed to involve the same vasomotor mechanism observed in menopause-related hot flashes — a narrowed thermoneutral zone. When testosterone declines, the hypothalamic temperature-regulating center may become more sensitive to small body temperature changes, triggering sweating and flushing episodes during sleep. Direct experimental evidence for this mechanism in testosterone-deficient men is limited.

The thermoneutral zone is the range of core body temperatures within which the hypothalamus does not initiate active heating or cooling responses. Testosterone is believed to influence the width of this zone. When testosterone declines — whether from aging, sleep deprivation, or hypogonadism — the thermoneutral zone may narrow, meaning smaller temperature fluctuations trigger sweating, vasodilation, and flushing. This mechanism is inferred from the well-documented estrogen-withdrawal model of menopause-related hot flashes; direct controlled studies of thermoneutral zone narrowing in testosterone-deficient men remain sparse.

In the Barrett-Connor cohort of 1,312 older men, lower testosterone was associated with more nocturnal awakenings and lower sleep efficiency — and night sweats contribute to that sleep fragmentation by producing arousal events that disrupt sleep continuity. The andropause and insomnia article covers the compound effect of multiple hormonal changes — testosterone, DHEA, and growth hormone — on vasomotor stability and sleep architecture in men over 50 (Barrett-Connor et al., 2008).

Related Reading:

References

1. Ukraintseva, Yu. V., Liaukovich, K. M., Polishchuk, A. A., Martynova, O. V., Belov, D. A., Simenel, E. S., Meira e Cruz, M., & Nizhnik, A. N. (2018). Slow-wave sleep and androgens: selective slow-wave sleep suppression affects testosterone and 17alpha-hydroxyprogesterone secretion. Sleep Medicine, 48, 117-126. https://pubmed.ncbi.nlm.nih.gov/29894840/

2. Luboshitzky, R., Zabari, Z., Shen-Orr, Z., Herer, P., & Lavie, P. (2001). Disruption of the nocturnal testosterone rhythm by sleep fragmentation in normal men. The Journal of Clinical Endocrinology and Metabolism, 86(3), 1134-1139. https://pubmed.ncbi.nlm.nih.gov/11238497/

3. Su, L., Zhang, S. Z., Zhu, J., Wu, J., & Jiao, Y. Z. (2021). Effect of partial and total sleep deprivation on serum testosterone in healthy males: a systematic review and meta-analysis. Sleep Medicine, 88, 267-273. https://pubmed.ncbi.nlm.nih.gov/34801825/

4. Barrett-Connor, E., Dam, T. T., Stone, K., Harrison, S. L., Redline, S., Orwoll, E., & Osteoporotic Fractures in Men Study Group. (2008). The association of testosterone levels with overall sleep quality, sleep architecture, and sleep-disordered breathing. The Journal of Clinical Endocrinology and Metabolism, 93(7), 2602-2609. https://pubmed.ncbi.nlm.nih.gov/18413429/

5. Hernandez-Perez, J. G., Taha, S., Torres-Sanchez, L. E., Villasante-Tezanos, A., Milani, S. A., Baillargeon, J., Canfield, S., & Lopez, D. S. (2024). Association of sleep duration and quality with serum testosterone concentrations among men and women: NHANES 2011-2016. Andrology, 12(3), 518-526. https://pubmed.ncbi.nlm.nih.gov/37452666/

6. Agrawal, P., Singh, S. M., Able, C., Kohn, T. P., & Herati, A. S. (2024). Sleep disorders are associated with testosterone deficiency and erectile dysfunction — a U.S. claims database analysis. International Journal of Impotence Research, 36(1), 78-82. https://pubmed.ncbi.nlm.nih.gov/36473958/

7. Ralston, M., Ehlen, J. C., & Paul, K. (2024). Reproductive hormones and sex chromosomes drive sex differences in the sleep-wake cycle. Frontiers in Neuroscience, 18, 1478820. https://pubmed.ncbi.nlm.nih.gov/39544910/

8. Andersen, M. L., & Tufik, S. (2008). The effects of testosterone on sleep and sleep-disordered breathing in men: its bidirectional interaction with erectile function. Sleep Medicine Reviews, 12(5), 365-379. https://pubmed.ncbi.nlm.nih.gov/18519168/

9. Klonteig, S., Scarth, M., & Bjornebekk, A. (2024). Sleep pathology and use of anabolic androgen steroids among male weightlifters in Norway. BMC Psychiatry, 24(1), 62. https://pubmed.ncbi.nlm.nih.gov/38254047/

Written by Kat Fu, M.S., M.S. · Last reviewed: May 2026 · 9 references cited

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