Does creatine increase testosterone? The science on muscle fuel and male hormones

Creatine monohydrate does not significantly increase total or free testosterone in healthy men in controlled studies, because it works by boosting cellular energy (ATP recycling) rather than directly stimulating the endocrine system. It may still help you train harder and see temporary workout-related hormone spikes. As reported in a single 2009 rugby study, higher DHT (a potent androgen) is one reason the testosterone and hair-loss rumors persist.

Key takeaways

• Creatine monohydrate does not significantly increase total or free testosterone in healthy men in controlled studies, even though harder training can cause short-lived workout-related testosterone spikes.
• Creatine works via ATP recycling by increasing intramuscular phosphocreatine to squeeze out extra reps, and it has no known mechanism to stimulate the HPG axis (LH signaling) or Leydig cell testosterone production.
• A single 2009 study in college rugby players reported a 56% increase in DHT after creatine loading despite unchanged testosterone, but no later trial has replicated the DHT rise, and reviews have found no link to hair loss.
• Creatine is not a treatment for testosterone deficiency. Hypogonadism is diagnosed from persistent symptoms plus low testosterone confirmed on repeat morning blood tests, with LH and FSH measured to show where the problem starts.
• For performance, take 3 to 5 g/day of creatine monohydrate consistently (cycling is unnecessary), expect an early 2 to 4 lb increase from intracellular water, and protect hormones with lifestyle basics such as adequate sleep, since one week of 5 hours a night lowered daytime testosterone by 10% to 15% in a small study of young men.

The relationship

Men who lift often want two things from a supplement: more muscle and higher testosterone. Creatine monohydrate reliably helps with the first. Controlled research does not show that it raises testosterone production.

The confusion usually comes from training itself. According to a 2010 review in Sports Medicine, testosterone concentration generally rises directly after heavy resistance exercise in men, especially in sessions with high volume and high metabolic demand.^[1] Creatine lets men lift more weight for more volume, so their workouts can produce these short-lived rises. In trials that compare creatine with placebo, however, resting testosterone does not change meaningfully, and a 2021 review in the Journal of the International Society of Sports Nutrition concluded that the current evidence does not show creatine increases total or free testosterone.^[2]

One study keeps the “creatine boosts male hormones” idea alive. A 2009 placebo-controlled crossover trial in 20 college rugby players found that serum testosterone did not change, but dihydrotestosterone (DHT) rose 56% after 7 days of creatine loading and stayed 40% above baseline after 14 days of maintenance dosing.^[3] DHT is a more potent androgen made from testosterone, and it is involved in male pattern baldness and prostate enlargement. No later trial has repeated the finding, and the 2021 review concluded that the evidence does not show creatine raises DHT or causes hair loss.^[2]

How it works

Creatine and testosterone act through separate systems. Creatine supports cellular energy, while testosterone is controlled by the endocrine system.

The energy pathway: ATP recycling

Creatine functions mainly as an energy buffer. Muscles contract using adenosine triphosphate (ATP), and during a heavy set the available ATP is used up within seconds. Creatine is stored in muscle as phosphocreatine, which donates a phosphate group to adenosine diphosphate (ADP) to regenerate ATP quickly. Supplementation raises intramuscular creatine stores, which helps explain the improvements in high-intensity exercise performance and the greater training adaptations seen in studies.^[4] The extra training work, not a hormonal signal, is what drives the added muscle growth.

The hormonal pathway: HPG axis

Testosterone production is governed by the HPG axis. The hypothalamus signals the pituitary gland to release luteinizing hormone (LH), which travels to the testes and stimulates the Leydig cells, the cells that make testosterone. There is no known mechanism by which creatine monohydrate influences the pituitary gland or Leydig cells. It is not a precursor (a building block) for steroid hormones, and it does not inhibit the enzymes that break testosterone down.

The IGF-1 factor

Creatine may influence another anabolic signal, insulin-like growth factor 1 (IGF-1). A 2008 randomized trial in 42 young adults starting an 8-week resistance training program found that muscle IGF-1 content rose 78% with creatine and 54% with placebo, a difference that did not reach statistical significance (p = 0.06).^[5] IGF-1 is involved in muscle repair and growth, so this is one proposed route by which creatine could support training gains while serum testosterone stays at baseline.

Conditions linked to it

Male hypogonadism (low T). Men with clinically low testosterone often turn to supplements hoping for a natural fix. Hypogonadism is a clinical diagnosis that requires both persistent symptoms and low testosterone on testing. According to the 2018 AUA guideline, low total testosterone should be confirmed on two separate early morning measurements, with 300 ng/dL as a reasonable cut-off, and LH should be measured in men found to have low testosterone.^[6] Creatine is generally safe for men with low testosterone, but it is not a treatment for the condition. It may help maintain strength and muscle mass, which can be harder to hold onto when testosterone is low, but it will not restore testicular function.

Androgenetic alopecia (hair loss). The fear that creatine accelerates hair loss comes from the rugby study described above. In men with a genetic predisposition to balding, DHT acts on hair follicles and causes miniaturization, a gradual shrinking that produces thinner, shorter hairs until the follicles stop growing. Current evidence has not established a link between creatine use and hair loss.^[2]

Kidney function markers. Clinicians estimate kidney function using a blood marker called creatinine (note the extra “n”), a breakdown product of creatine. Creatine supplementation can raise serum creatinine slightly without indicating kidney damage.^[2] This can look like kidney stress on routine blood work, so tell the clinician interpreting your labs that you take creatine.

Symptoms and signals

The fuller look and extra reps from creatine are easy to mistake for a hormonal change. The two produce different signs.

Signs creatine is working (physical):

• Water retention: The scale may go up by 2 to 4 pounds in the first week. This is intracellular water (inside the muscle) and is consistent with rising muscle creatine stores.
• Volume tolerance: You can perform 10 reps with a weight that usually limits you to 8.
• Fullness: Muscles look slightly larger and feel firmer because of increased fluid within the muscle fibers.

Signs of higher testosterone (hormonal):

• Morning erections: More frequent and firmer morning erections can reflect improved testosterone levels.
• Libido: A noticeable increase in sexual desire.
• Mood: Improved confidence, less irritability, and a better sense of general well-being.
• Sebum production: Oilier skin or mild acne can signal a change in androgen levels.

If you are taking creatine and getting stronger but your libido is low, your mood is flat, and you are fatigued, you may be getting the benefits of creatine while also having low testosterone. The two are independent.

What to do about it

For most healthy men, creatine monohydrate is well studied. According to the 2017 International Society of Sports Nutrition position stand, short- and long-term supplementation, up to 30 g/day for five years, has been safe and well tolerated in healthy people.^[4] Men with known kidney disease, unexplained abnormal kidney labs, or potentially nephrotoxic medications should discuss supplementation with a clinician before starting.

Men with persistent symptoms of low testosterone need blood work rather than more supplements. LH and FSH, measured alongside testosterone, show whether the pattern is primary or secondary/functional hypogonadism, and that distinction shapes treatment. Testosterone therapy is generally used for primary hypogonadism; it suppresses sperm production, and the AUA guideline advises against prescribing it to men who are trying to conceive.^[6] Men with secondary or functional hypogonadism may be candidates for fertility-preserving options such as enclomiphene, which raises the body’s own LH and testosterone production.

Veedma offers testing that includes total and free testosterone measured by LC-MS/MS with LH and FSH, or a review of labs a man already has, with results interpreted by licensed providers. When appropriate, those providers prescribe enclomiphene or the enclomiphene plus tadalafil tablet. 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.

1. Keep the creatine routine simple. Take 3 to 5 grams of creatine monohydrate daily. A loading phase is not required: a steady daily dose raises muscle creatine stores more slowly, over about four weeks, and causes less digestive bloating.^[2] Consistency matters more than timing, though taking it after a workout with carbohydrates may slightly improve uptake. Other forms, such as “buffered” or liquid creatine, have not been shown to work better than monohydrate and usually cost more.^[2]
2. Get tested if symptoms persist. Creatine will neither hide nor fix low testosterone. Draw blood in the early morning, and repeat a low total testosterone result on a second morning before drawing conclusions.^[6] Useful tests include total testosterone, free testosterone (ideally measured by equilibrium dialysis with LC-MS/MS), LH, FSH, estradiol, CBC, comprehensive metabolic panel, and PSA when age appropriate.
3. Support natural production. A 2011 JAMA study of 10 young healthy men found that one week of sleeping 5 hours a night lowered daytime testosterone by 10% to 15% compared with their rested baseline.^[7] Zinc and magnesium matter if you are deficient, so prioritize adequate intake from diet and correct documented deficiencies rather than expecting ZMA to meaningfully raise testosterone in most men.

Myth vs fact

Myth: Creatine is a steroid.

Fact: Creatine is a naturally occurring compound synthesized from the amino acids glycine, arginine, and methionine. It has no steroid structure and does not bind to androgen receptors.

Myth: You must cycle off creatine to “reset” your hormones.

Fact: Creatine does not suppress natural testosterone production (unlike exogenous testosterone), so there is no physiological need to cycle off. Daily use has been studied for up to five years in healthy people without safety problems.^[4]

Myth: Creatine causes “roid rage.”

Fact: There is no evidence that creatine increases aggression.

Bottom line

Creatine does not meaningfully increase total or free testosterone in healthy men. It improves training capacity via ATP recycling, which can support strength and muscle gains without directly changing hormones. If you suspect low testosterone, confirm it with repeat morning labs that include LH and FSH, then address lifestyle factors and medical causes with a clinician.

References

1. Vingren JL, Kraemer WJ, Ratamess NA, et al. Testosterone physiology in resistance exercise and training: the up-stream regulatory elements. Sports Med. 2010;40:1037-53. PMID: 21058750
2. Antonio J, Candow DG, Forbes SC, et al. Common questions and misconceptions about creatine supplementation: what does the scientific evidence really show?. J Int Soc Sports Nutr. 2021;18:13. PMID: 33557850
3. van der Merwe J, Brooks NE, Myburgh KH. Three weeks of creatine monohydrate supplementation affects dihydrotestosterone to testosterone ratio in college-aged rugby players. Clin J Sport Med. 2009;19:399-404. PMID: 19741313
4. Kreider RB, Kalman DS, Antonio J, et al. International Society of Sports Nutrition position stand: safety and efficacy of creatine supplementation in exercise, sport, and medicine. J Int Soc Sports Nutr. 2017;14:18. PMID: 28615996
5. Burke DG, Candow DG, Chilibeck PD, et al. Effect of creatine supplementation and resistance-exercise training on muscle insulin-like growth factor in young adults. Int J Sport Nutr Exerc Metab. 2008;18:389-98. PMID: 18708688
6. Mulhall JP, Trost LW, Brannigan RE, et al. Evaluation and Management of Testosterone Deficiency: AUA Guideline. J Urol. 2018;200:423-432. PMID: 29601923
7. 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