Does masturbating lower testosterone? The science behind the myths

Masturbation does not permanently lower baseline testosterone because the hypothalamus‑pituitary‑gonadal (HPG) axis maintains homeostatic hormone production, and clinical studies show no statistically significant change in systemic testosterone after orgasm. The real story is short‑term fluctuations, such as the often‑misread ~145% spike on day 7 of abstinence, and what that means (and doesn’t) for muscle, mood, and long‑term health.

Key takeaways

• Masturbation does not permanently lower baseline testosterone in healthy men, and clinical studies show no meaningful drop in systemic testosterone after orgasm.
• The often-cited spike to about 145% of baseline on day 7 of abstinence comes from a paper that has since been retracted.^[2] A separate small study found higher testosterone after three weeks of abstinence,^[1] and no study shows levels rising without limit.
• Orgasm raises prolactin, which stays elevated for a while afterward, while testosterone does not change. Post-orgasm tiredness is not a sign of a testosterone drop.
• Testosterone deficiency is diagnosed from persistent symptoms together with low testosterone on properly timed morning blood tests, with LH and FSH measured to identify the cause.
• If low testosterone is a concern, get properly timed morning testing and focus on sleep, weight management, and stress reduction rather than avoiding masturbation. Treatment depends on whether hypogonadism is primary or secondary.

The relationship

Masturbation does not cause a long-term decrease in baseline testosterone in healthy men. The belief that sexual frequency affects muscle-building hormones still drives interest in semen retention and “NoFap” challenges. The hormone studies on the question are small, but they point the same way.

They show that while sexual activity produces short-term changes in blood chemistry, testosterone is not one of the hormones that falls. According to a 2001 study in the World Journal of Urology by Exton and colleagues, which sampled blood continuously in ten healthy men during masturbation to orgasm before and after three weeks of sexual abstinence, plasma testosterone did not change with orgasm, although testosterone concentrations were higher after the abstinence period.^[1]

Much of the online debate traces back to a 2003 study by Jiang and colleagues in the Journal of Zhejiang University Science, which measured serum testosterone daily in 28 volunteers and reported a peak of about 145% of baseline on the seventh day of abstinence, with no regular pattern after that peak.^[2] The paper has since been retracted.^[2] Its numbers should not be used to plan abstinence or to estimate hormone changes. Neither study suggests that testosterone keeps building the longer a man abstains.

How it works

The answer depends on the Hypothalamus-Pituitary-Gonadal (HPG) axis, the system that regulates male hormone production.

The HPG feedback loop

Testosterone production begins in the brain, not the testicles. The hypothalamus releases gonadotropin-releasing hormone (GnRH), which signals the pituitary gland to release two messengers: luteinizing hormone (LH) and follicle-stimulating hormone (FSH). LH travels through the bloodstream to the Leydig cells in the testes, instructing them to produce testosterone.

This system runs on negative feedback. When testosterone in the blood rises, the brain reduces GnRH and LH release, and when it falls, release increases. Testosterone is made continuously under this control and is not stored in semen, so ejaculation does not drain a supply. According to a 2003 study in the Journal of Endocrinology by Krüger and colleagues, which sampled blood every 2 minutes in ten healthy men, LH, FSH and testosterone stayed unchanged during sexual arousal and orgasm.^[3]

The prolactin surge

While testosterone does not fall after orgasm, prolactin does change. In the same study, prolactin rose immediately after orgasm and stayed elevated for the rest of the 40-minute sampling period.^[3]

In men, prolactin is thought to contribute to sexual satiety and to the refractory period, the time after orgasm when another erection is difficult. Many men mistake the relaxed, sleepy feeling after orgasm for a drop in testosterone. In healthy men, serum testosterone stays within its usual day-to-day range during this recovery state.

Hormonal thresholds

When clinicians evaluate hormonal health, they look at persistent symptoms and correctly collected morning labs, not at sexual frequency. According to the 2018 American Urological Association (AUA) guideline, testosterone deficiency is diagnosed when symptoms or signs are present together with total testosterone below 300 ng/dL on at least two early morning measurements taken on separate days.^[4] Free testosterone is often measured as well, especially when total testosterone is borderline or binding proteins are abnormal. Properly timed morning testing matters because testosterone is highest early in the day. Nothing in the studies of orgasm and hormones suggests that masturbation frequency moves a man with normal testosterone into the deficient range.

Conditions linked to it

Masturbation itself does not lower testosterone, but worry about it can affect well-being, and a few conditions are easily confused with a hormone problem.

Chronic stress and cortisol
Men who worry constantly about their sexual frequency or feel intense guilt (often called “sexual shame”) may live with ongoing stress, which is often blamed for elevated cortisol levels and lower testosterone. The evidence for that link is mixed. According to a 2005 study of 45 young men in the Journal of Sports Science and Medicine, cortisol given as a drug lowers blood testosterone, but resting cortisol and testosterone were not correlated, and the negative relationship that appeared after intense exercise was small to moderate and associative rather than causal.^[5] No study has measured whether guilt about masturbation lowers testosterone, but persistent anxiety is worth addressing for its own sake.

Post-orgasmic illness syndrome (POIS)
POIS is a rare condition in which ejaculation is followed by flu-like symptoms, exhaustion and difficulty concentrating. Men with POIS often believe they have very low testosterone because they feel physically weak after sex. According to a 2011 study of 45 Dutch men with suspected POIS in The Journal of Sexual Medicine, symptoms began within 30 minutes of ejaculation in 87% of men, and 29 of the 33 men tested (88%) had a positive skin-prick test to their own diluted semen, which the authors took as support for an allergic mechanism rather than a hormonal one.^[6]

Porn-induced erectile dysfunction (PIED)
Some men report erectile dysfunction (ED) symptoms they associate with heavy pornography use, often alongside frequent masturbation. Evidence is still evolving, and ED is commonly multifactorial. If ED persists, clinicians typically evaluate common contributors such as cardiometabolic risk (blood pressure, diabetes), medications, mental health and performance anxiety, sleep and obstructive sleep apnea, substance use, relationship factors, and endocrine issues (including testosterone) before attributing symptoms to pornography alone.

Symptoms and signals

The temporary tiredness of the refractory period is different from the chronic symptoms of clinical hypogonadism (low T). Feeling sleepy after sex is normal; feeling lethargic every day is not.

Signs of true low testosterone:

• Loss of morning erections: Fewer spontaneous morning erections is one of the symptoms most closely tied to androgen deficiency.
• Reduced muscle mass: Difficulty building or maintaining muscle despite adequate protein intake and training.
• Central adiposity: Increased body fat around the belly and organs.
• Gynecomastia: Tenderness or swelling of breast tissue.
• Mood changes: Persistent irritability, low mood, or lack of motivation.

Signs of the post-ejaculatory state (not low T):

• Temporary sleepiness: Often attributed to the rise in prolactin after orgasm.
• Short-term loss of libido: The natural refractory period (lasting minutes to hours).
• Mental relaxation: A drop in tension immediately after orgasm.

What to do about it

If you are concerned about your hormone health or unsure whether your habits are affecting how you feel, these steps are a reasonable place to start.

1. Get tested properly
If you suspect low testosterone, ask for a morning blood test. According to the European Association of Urology guidelines, total testosterone should be measured in a fasting morning sample taken between 7 and 11 a.m. and repeated on a separate occasion if low, and LH and FSH should be measured to distinguish primary from secondary hypogonadism.^[7] A first workup often also includes free testosterone, estradiol, a complete blood count, a metabolic panel and, from age 40, PSA.

2. Address lifestyle factors
Before blaming sexual activity, look at the factors known to suppress testosterone:

• Sleep: According to a 2011 study in JAMA, ten young healthy men whose sleep was restricted to 5 hours a night for one week had daytime testosterone levels 10% to 15% lower.^[8]
• Obesity: Adipose tissue (fat) converts testosterone into estradiol (an estrogen that men also produce), which can lower total and free testosterone.
• Alcohol: Chronic heavy drinking is toxic to the testes and can increase conversion of testosterone to estradiol.

3. Keep perspective
Masturbation is a normal sexual behavior. Semen retention for personal discipline is a personal choice, but the hormone studies do not support it as a way to protect testosterone. If guilt or worry about masturbation is persistent, it is worth discussing with a clinician or counselor.

If persistent symptoms and low testosterone are confirmed, LH and FSH help classify whether hypogonadism is primary or secondary/functional. High LH with low testosterone points to the testes, while low or normal LH points to reduced signaling from the brain, often from reversible causes such as obesity, type 2 diabetes or medications. Testosterone therapy suppresses LH, FSH and sperm production, and the 2018 AUA guideline advises that men who want to maintain fertility should not use it.^[4] For men with secondary or functional hypogonadism, alternatives to TRT include enclomiphene, which blocks estrogen feedback at the hypothalamus so the pituitary releases more LH.

Veedma offers testing that includes total and free testosterone measured by LC-MS/MS with LH and FSH, or a review of labs a reader already has, with care from licensed providers across the U.S. When appropriate, those providers prescribe enclomiphene or the enclomiphene plus tadalafil tablet, and Veedma’s protocol uses enclomiphene first for secondary or functional hypogonadism. Enclomiphene is not an FDA-approved drug; it is prescribed after a provider confirms the diagnosis and is compounded by a licensed U.S. pharmacy.

Myth vs fact

Myth: Holding in semen reabsorbs testosterone into the bloodstream.

Fact: Unused sperm is broken down and reabsorbed by the body, but sperm is not testosterone. Testosterone is a steroid hormone secreted directly into the blood; it is not stored in semen.

Myth: Masturbation causes hair loss.

Fact: Male pattern baldness is driven by genetically determined sensitivity of hair follicles to dihydrotestosterone (DHT). There is no good evidence that ejaculation frequency affects hair loss.

Myth: If I stop masturbating, my testosterone will skyrocket indefinitely.

Fact: One small study found higher testosterone after three weeks of abstinence,^[1] and the “7-day spike” quoted online comes from a paper that was later retracted.^[2] No study shows a continuing climb to supraphysiological levels through abstinence.

Myth: Masturbation prevents muscle growth.

Fact: Muscle growth is driven by nutrition, training, sleep, and overall androgen levels. Short-term hormone changes during sexual activity have no meaningful effect on long-term muscle gain.

Bottom line

Masturbation does not lower testosterone. Orgasm brings short-term changes, including a rise in prolactin that can leave you relaxed or sleepy, but there is no clinical evidence that masturbation lowers baseline testosterone or limits muscle growth. Sleep, weight management, and stress reduction have a far larger effect on hormone health than the physiological cost of an orgasm.

References

1. Exton MS, Krüger TH, Bursch N, et al. Endocrine response to masturbation-induced orgasm in healthy men following a 3-week sexual abstinence. World J Urol. 2001;19:377-82. PMID: 11760788
2. Jiang M, Xin J, Zou Q, et al. A research on the relationship between ejaculation and serum testosterone level in men. J Zhejiang Univ Sci. 2003;4:236-40. PMID: 12659241
3. Krüger TH, Haake P, Chereath D, et al. Specificity of the neuroendocrine response to orgasm during sexual arousal in men. J Endocrinol. 2003;177:57-64. PMID: 12697037
4. Mulhall JP, Trost LW, Brannigan RE, et al. Evaluation and Management of Testosterone Deficiency: AUA Guideline. J Urol. 2018;200:423-432. PMID: 29601923
5. Brownlee KK, Moore AW, Hackney AC. Relationship between circulating cortisol and testosterone: influence of physical exercise. J Sports Sci Med. 2005;4:76-83. PMID: 24431964
6. Waldinger MD, Meinardi MM, Zwinderman AH, et al. Postorgasmic Illness Syndrome (POIS) in 45 Dutch caucasian males: clinical characteristics and evidence for an immunogenic pathogenesis (Part 1). J Sex Med. 2011;8:1164-70. PMID: 21241453
7. Salonia A, Bettocchi C, Boeri L, et al. European Association of Urology Guidelines on Sexual and Reproductive Health-2021 Update: Male Sexual Dysfunction. Eur Urol. 2021;80:333-357. PMID: 34183196
8. Leproult R, Van Cauter E. Effect of 1 week of sleep restriction on testosterone levels in young healthy men. JAMA. 2011;305:2173-4. PMID: 21632481