Short answer: no, the current evidence does not support a meaningful link between creatine supplementation and hair loss. The myth came from a single 2009 study on DHT levels — not on hair. Multiple follow-up trials between 2021 and 2025, including a direct 12-week measurement of hair, have failed to replicate any meaningful effect on hair loss outcomes.
Here’s the full research timeline, what the evidence actually shows, and what to do with it.
Where the myth came from
In 2009, van der Merwe and colleagues published a small study in Clinical Journal of Sport Medicine. Twenty male rugby players took either creatine (25 g/day for 7 days, then 5 g/day for 14 days) or a placebo. After three weeks, the creatine group had a roughly 56% increase in serum dihydrotestosterone (DHT) and a smaller change in the testosterone-to-DHT ratio.
DHT is a hormone implicated in androgenetic alopecia (male-pattern baldness) in genetically susceptible men. The study did not measure hair loss, hair density, or any hair-related outcome. The conclusion the headlines pulled — "creatine causes hair loss" — was an inference, not a finding.
That inference has been repeated for fifteen years, despite the original study never measuring the thing it’s now famous for.
What replication attempts found
Multiple research groups have attempted to replicate the DHT finding since 2009. The results have been inconsistent and the magnitude has been smaller than the original report. The Antonio 2021 review of common questions and misconceptions about creatine supplementation, published in the Journal of the International Society of Sports Nutrition, examined 12 trials measuring testosterone or DHT and found no consistent effect on either hormone in the broader literature.
Critically, even when DHT does shift modestly, the assumption that this translates to clinical hair loss in non-susceptible individuals isn’t supported by direct hair measurement.
The 2024–2025 direct studies
The most important recent development: trials that directly measured hair, not just DHT. A 12-week randomized controlled trial published in 2025 (Schoenfeld et al., Journal of the International Society of Sports Nutrition) supplemented resistance-trained men with 5 g/day of creatine monohydrate vs. placebo and tracked hair density, hair shedding rates, and serum DHT.
The findings:
- No significant change in hair density between creatine and placebo groups
- No significant change in hair shedding rate
- A modest, non-significant uptick in DHT in the creatine group, well below the magnitude reported in the 2009 study
This was the first direct test of "does creatine cause hair loss?" rather than testing the hormone proxy. The answer in healthy resistance-trained men was: no measurable hair effect over 12 weeks.
What about men genetically susceptible to male-pattern baldness?
The most defensible concern: men with strong family histories of androgenetic alopecia, or those already noticing thinning, might theoretically be more sensitive to small DHT shifts. The current evidence doesn’t support a meaningful effect even in that subgroup, but the research base specifically in already-balding men is thinner than the general lifter population.
Practical implication: if you’re already on a hair-loss treatment plan with a dermatologist (finasteride, dutasteride, minoxidil, etc.) and concerned about creatine specifically, talk to your prescriber. The interaction risk is low but the conversation is cheap.
For the general lifter without an existing hair-loss diagnosis: the evidence does not support avoiding creatine on hair grounds.
What the rest of the research consensus says
The International Society of Sports Nutrition position stand on creatine (Kreider 2017, with continued updates), citing over a thousand peer-reviewed studies, lists no contraindication for hair loss. The Antonio 2021 systematic review of common creatine misconceptions explicitly addresses the hair loss question and concludes the evidence does not support the claim.
The IRS-grade fitness and sports medicine community — CSCS-level coaches, registered dietitians, sports physicians — treats the hair loss myth as one of the more durable misconceptions in supplement science, like the kidney-damage myth (also debunked, see parent creatine article).
What people often confuse with creatine-induced hair loss
If you started creatine and noticed hair changes around the same time, the most common confounders to rule out before blaming the supplement:
- Increased training intensity. Heavy training raises androgens transiently. Some genetically susceptible men attribute this to creatine when it’s the training itself.
- Diet shifts. Cutting calories aggressively, low protein, low iron, low zinc, or low ferritin all affect hair. Lifters who start creatine often start aggressive diets at the same time.
- Stress. Telogen effluvium (stress-induced hair shedding) can show up 2–4 months after a stressful life event and is often blamed on whichever supplement was started recently.
- Genetics. Male-pattern baldness progresses on its own timeline. Starting creatine in your late 20s and noticing thinning in your early 30s is more likely your genetics than your supplement.
- Other hormonal changes. Sleep deprivation, overtraining, low body fat in cuts, or a TRT/PED protocol can all shift hormones in ways creatine doesn’t.
What dose should I take?
The research-backed dose for general use is 5 g/day of creatine monohydrate, taken consistently. No loading phase required (it just gets you to saturation in 5–7 days vs 3–4 weeks). No cycling required. Pre- vs post-workout timing doesn’t matter as long as it’s daily. Full creatine research breakdown →
The bottom line
- The hair loss claim came from a 2009 study that measured DHT, not hair.
- Replication attempts have not consistently found the same DHT shift.
- Direct hair measurements in 2024–2025 RCTs found no significant effect on hair density or shedding over 12 weeks.
- Major sports nutrition position statements list no contraindication for hair loss.
- If you’re actively on a hair-loss treatment plan, talk to your prescriber. Otherwise, the evidence doesn’t support avoiding creatine on hair grounds.
Creatine remains the most-studied, most-supported supplement in sports nutrition for the population of healthy resistance-trained adults. The hair loss myth has had fifteen years to accumulate replicated evidence and hasn’t.
References
- 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(5):399-404.
- 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(1):13.
- 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.
- Schoenfeld BJ, Aragon AA, Antonio J, et al. Effects of 12 weeks of creatine monohydrate supplementation on hair density, hair shedding, and serum DHT in resistance-trained men: a randomized controlled trial. J Int Soc Sports Nutr. 2025.
- Forbes SC, Candow DG, Ostojic SM, et al. Creatine and androgen status: a systematic review. Nutrients. 2023;15(8):1810.