You've probably heard it in the gym, seen it in comment sections, or stumbled across it while researching supplements: "Creatine causes hair loss." It's one of the most persistent concerns surrounding one of the most well-studied supplements in sports nutrition. So before you skip creatine entirely - or dismiss the concern without a second thought - it's worth asking: what does the evidence actually say?
The short answer is that this claim traces back to a single study, with a specific finding that has been widely misrepresented. The long answer requires understanding some basic hair follicle biology, what DHT actually is, and why that one study does not prove what most people think it does.
This article walks you through all of it - no hype, no dismissal, just the science.
(Image illustration is for educational and references purposes only)
The Biology of Hair Loss: How DHT Actually Works
To evaluate whether creatine causes hair loss, you first need to understand how hair loss happens at a biological level.
Most common hair loss in men (and some women) is called androgenetic alopecia (AGA), or pattern baldness. It is driven primarily by a hormone called dihydrotestosterone, or DHT.
Here's the basic mechanism: Testosterone, which is present in both men and women in different concentrations, is converted into DHT by an enzyme called 5-alpha reductase. DHT is a more potent androgen than testosterone - it binds more tightly to androgen receptors throughout the body, including those found in hair follicles.
In individuals who are genetically predisposed to AGA, DHT binding to follicular androgen receptors triggers a process called miniaturization - the follicle gradually shrinks over successive hair growth cycles, producing progressively thinner, shorter hairs, until eventually it stops producing hair altogether.
This is the key nuance: DHT only causes hair loss in people who are genetically susceptible. The relevant genes, primarily variants of the androgen receptor gene (AR), determine whether your follicles are sensitive to DHT's effects. Someone with low follicular androgen receptor sensitivity can have high DHT levels without losing a single hair. Someone with high sensitivity may experience significant thinning even with moderate DHT levels.
This genetic component is well-established in dermatological and endocrinological literature and is the foundation for approved hair-loss treatments like finasteride, which works by inhibiting 5-alpha reductase.
What the Research Actually Says About Creatine and DHT
The creatine-hair loss concern originates from one source: a single randomized controlled trial published in 2009 by van der Merwe and colleagues, involving 20 male collegiate rugby players in South Africa.
Here is what the study measured and found - accurately, without extrapolation:
Participants were assigned to either a creatine loading protocol (25g/day for 7 days followed by 5g/day for 14 days) or a placebo. Researchers measured several markers before, during, and after supplementation - including serum DHT, serum testosterone, and the ratio of DHT to testosterone (DHT/T ratio).
The creatine group showed no significant change in total testosterone. However, the DHT/T ratio increased by approximately 36% after the loading phase and remained about 22% elevated during the maintenance phase. The authors suggested this might indicate increased conversion of testosterone to DHT, possibly through enhanced 5-alpha reductase activity.
Critically, the study did not measure hair loss. Not a single hair follicle was assessed. No participants reported or demonstrated hair thinning. The paper did not claim creatine causes hair loss — it reported a change in a hormonal ratio in a specific population over three weeks. It was also a single RCT with a very small sample (n=20) that, as of today, has not been consistently replicated across subsequent hormonal studies.
The 2025 Study That Measured Hair Health Directly
In April 2025, researchers published the first randomized controlled trial designed specifically to examine whether creatine supplementation affects actual hair follicle health - not just a hormonal proxy. The study was authored by Lak, Forbes, Ashtary-Larky, and colleagues, and published in the Journal of the International Society of Sports Nutrition (DOI: 10.1080/15502783.2025.2495229).
Study design: Forty-five resistance-trained males between the ages of 18 and 40 were recruited and randomly assigned to either 5g/day of creatine monohydrate or a placebo (5g maltodextrin/day) for 12 weeks. Thirty-eight participants completed the full protocol.
What was measured: Researchers assessed testosterone, free testosterone, DHT, and - critically - direct hair follicle health outcomes including hair density, follicular unit count, and hair thickness. Hair follicle health was evaluated using the Trichogram test and the FotoFinder dermatoscopic imaging system, allowing for direct scalp-level assessment rather than indirect hormonal inference.
What was found: There were no significant group-by-time interactions for any hormones or hair-related outcomes (p > 0.05). While total testosterone increased and free testosterone decreased over time in both groups, these changes were independent of supplementation. There were no significant differences in DHT levels, DHT-to-testosterone ratio, or any hair growth parameters between the creatine and placebo groups. The authors concluded this was the first study to directly assess hair follicle health following creatine supplementation, and that results provide evidence against the claim that creatine contributes to hair loss.
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What the Evidence Does Strongly Support About Creatine
While the hair loss claim remains unsubstantiated, the evidence base for creatine's performance benefits is extensive and robust. Multiple systematic reviews and meta-analyses of randomized controlled trials have consistently found that creatine monohydrate supplementation:
- Improves strength and power output in resistance training
- Enhances high-intensity exercise performance
- Supports lean mass accrual when combined with resistance training
- Is well-tolerated and safe in healthy adults at standard doses (3–5g/day maintenance)
Creatine's mechanism is well-understood: it increases phosphocreatine stores in muscle tissue, which accelerates regeneration of adenosine triphosphate (ATP) during short-duration, high-intensity efforts. This is textbook energy systems physiology, not speculative.
The safety profile of creatine is similarly well-documented. Reviews examining long-term use have not identified clinically meaningful adverse effects on renal function in healthy individuals, liver markers, or hormonal health - with the noted exception of the single DHT/T ratio finding above, which requires further investigation before any conclusions can be drawn.
Practical Guidance: Who Should (and Shouldn't) Be Concerned
Given the current state of the evidence, here is how to think about this:
If you have no personal or family history of androgenetic alopecia, the theoretical pathway from creatine → elevated DHT → hair loss is not supported by evidence. A single, unreplicated study showing a change in a hormonal ratio - in a specific population, over three weeks is not a reason to avoid a supplement with an otherwise robust safety record.
If you do have a strong family history of pattern baldness or are already experiencing hair thinning, the 2025 Lak et al. study is reassuring - but it excluded individuals with diagnosed hair loss disorders, so it does not fully answer the question for this subgroup. The study also did not include genetic screening, meaning we cannot yet draw firm conclusions about creatine's safety for those with the highest follicular androgen sensitivity. Consulting a dermatologist before supplementing remains sensible advice for anyone with active hair loss concerns.
For everyone: If hair health is a priority concern, the most evidence-based interventions remain those targeting 5-alpha reductase activity or follicular androgen sensitivity directly - and those decisions should be made in consultation with a qualified healthcare provider, not based on supplement choices alone.
If you are looking to incorporate creatine into your training nutrition, creatine monohydrate at 3–5g per day is the most studied form and the benchmark for efficacy and safety comparisons. At Gentle Beast, our creatine is formulated to that standard - straightforward, third-party-tested, nothing added to complicate what the evidence already supports (click here to check it out).
Common Myths About Creatine and Hair Loss - Corrected
Myth 1: "Studies have proven creatine causes hair loss."
No study has demonstrated that creatine causes hair loss. One small RCT found an elevated DHT/T ratio over three weeks in 20 rugby players. Hair loss was not measured, the finding has not been consistently replicated, and the study authors made no claim that creatine causes alopecia.
Myth 2: "If creatine raises DHT, it must cause hair loss."
This logic skips several critical steps. DHT elevation (if it occurs) does not cause hair loss unless the individual has significant follicular androgen receptor sensitivity - a genetically determined trait. Many people with high DHT levels do not lose hair. The causal chain requires genetic susceptibility that cannot be assumed in the general population.
Myth 3: "People with a family history of baldness should never take creatine."
This overstates what the evidence supports. Current data does not establish that creatine causes or accelerates androgenetic alopecia in any population. Individuals with significant hair loss concerns should discuss all relevant factors - genetics, hormones, medications, lifestyle - with a dermatologist, rather than making decisions based on a misrepresented finding from one small study.
Conclusion
The claim that creatine causes hair loss originated from a single, small, non-replicated study that measured a hormonal ratio - not hair loss itself. That picture is now considerably clearer thanks to a 2025 randomized controlled trial by Lak and colleagues, the first to directly assess hair follicle health following creatine supplementation. Over 12 weeks, creatine produced no significant changes in DHT, DHT-to-testosterone ratio, hair density, follicular unit count, or hair thickness compared to placebo.
The broader evidence base - including over a dozen studies examining creatine's effects on androgen levels does not support the claim that creatine elevates DHT or damages hair health in the general population. Hair loss driven by androgenetic alopecia remains primarily a genetically mediated process, and no current evidence implicates creatine as a meaningful driver of that process.
That said, the 2025 study is one RCT with a sample of 38 participants and a 12-week window. It does not yet represent the highest level of evidence (a systematic review or meta-analysis of multiple such trials), and it did not specifically study individuals with genetic predisposition to hair loss. The honest position is that the evidence strongly trends against the concern - but the science is still maturing, and individuals with significant personal risk factors should discuss their full picture with a qualified clinician.
Train smart, supplement honestly, and make decisions based on what the evidence actually says - not what got amplified on a forum.
FAQs - Frequently Asked Questions About Creatine
- Does creatine increase DHT levels?
One small 2009 RCT (n=20) found that creatine supplementation elevated the DHT-to-testosterone ratio over three weeks in male rugby players. However, a 2025 randomized controlled trial (Lak et al.) specifically designed to test this found no significant changes in DHT, DHT/T ratio, or any direct hair follicle health measure over 12 weeks. The 2009 finding has not been consistently replicated, and the weight of current evidence does not support the claim that creatine meaningfully raises DHT.
- Has any study actually measured hair loss in creatine users?
Yes - for the first time in 2025. Lak and colleagues conducted a 12-week RCT in which dermatologists used scalp imaging technology (FotoFinder) and trichogram testing to directly assess hair density, follicular unit count, and cumulative hair thickness in resistance-trained men taking either 5g/day creatine or a placebo. No significant differences were found between groups on any hair outcome. This is the strongest direct evidence to date that creatine does not negatively affect scalp hair health, though the study had limitations including a relatively small sample and no genetic screening for predisposition to androgenetic alopecia.
- Can creatine speed up male pattern baldness?
There is currently no clinical evidence that creatine accelerates androgenetic alopecia. Male pattern baldness is primarily driven by genetic sensitivity of hair follicles to DHT - a trait that is present regardless of supplementation. Individuals with a strong family history of hair loss may wish to consult a dermatologist if concerned.
- Is creatine safe for people worried about hair loss?
For most people, creatine monohydrate at standard doses (3–5g/day) has a well-established safety profile. Those with significant concerns about androgenetic alopecia should discuss their individual risk factors with a healthcare provider rather than relying on general supplement guidance.
- What supplements are actually linked to hair loss?
Certain anabolic steroids and very high doses of some prohormones are associated with hair loss in genetically susceptible individuals due to significant androgenic effects. These are categorically different from creatine in their mechanism and hormonal impact. Creatine is not an androgen or a hormone precursor.
- Does whey protein cause hair loss?
Like creatine, whey protein is not an androgen and does not directly influence DHT pathways. Some concern exists around heavily processed protein supplements containing added hormones, but high-quality whey isolate at normal dietary doses is not associated with hair loss in the research literature.
