Does Creatine Cause Hair Loss? A UK Evidence Guide with the 2025 Trial Verdict
No, the current evidence does not show that creatine causes hair loss. The concern comes from a single 2009 South African rugby study that measured a hormone called DHT but never measured any hair. Sixteen years later, in April 2025, the first controlled trial to actually count hair follicles on people taking creatine found no difference from placebo.
That trial gave 38 resistance-trained men either 5g of creatine monohydrate a day or a placebo for 12 weeks and measured DHT, testosterone, and hair growth. Nothing moved (Lak et al., 2025, DOI: 10.1080/15502783.2025.2495229). Every other high-quality creatine safety review to date has said the same thing.
If you have been putting off buying creatine because a fitness influencer told you it would thin your hair, this guide walks through what the 2009 study actually said, why it was overread for a decade, and what to do if you have male pattern baldness in the family and still want the benefits.
Key Takeaway
No controlled trial has shown that creatine monohydrate causes hair loss. The 2025 12-week randomised trial, the first to measure hair directly, found no difference in DHT or hair growth between creatine and placebo groups.
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In this article
- So, does creatine actually cause hair loss?
- Where the hair-loss myth actually came from
- What DHT is and why it matters for hair
- The 2025 12-week trial that finally counted hair
- If male pattern baldness runs in your family
- The real side effects worth knowing
- How to take creatine: loading vs no loading
- Powder vs tablets: does the format matter here?
- Signs you should stop or see your GP
- Frequently asked questions
So, does creatine actually cause hair loss?
The short answer is no, at least not by any mechanism that the peer-reviewed literature has been able to demonstrate. Every direct trial that has looked at creatine and hair has come back null, meaning no meaningful change compared to placebo.
The most rigorous test to date is a 12-week randomised controlled trial on resistance-trained men aged 18 to 40 (Lak et al., 2025). Participants were given either 5g of creatine or a placebo, and the researchers measured DHT, testosterone, DHT-to-testosterone ratio, and actual hair growth parameters using phototrichogram assessments.
Nothing changed in the creatine group beyond what was already expected in strength and lean mass. The International Society of Sports Nutrition's 2021 position stand on creatine safety reached the same conclusion, noting that creatine has been studied in thousands of participants across three decades with no signal for hair loss (Antonio et al., 2021, DOI: 10.1186/s12970-021-00412-w).
Where the hair-loss myth actually came from
The whole concern traces to a single 2009 study on 20 college-aged rugby players in South Africa (van der Merwe, Brooks, and Myburgh, 2009, DOI: 10.1097/JSM.0b013e3181b8b52f). Participants took a 7-day loading dose of 25g of creatine per day followed by 14 days of 5g maintenance, and the researchers measured serum DHT.
DHT rose 56% during loading and stayed 40% above baseline during maintenance. That is a striking-looking number, and it is where the entire "creatine causes baldness" narrative comes from on TikTok and Reddit today.
The problem is what that study did not do. Testosterone did not change and DHT stayed inside the clinically normal reference range even at its peak. Hair itself was never measured.
And in the sixteen years since, no other trial has managed to replicate the DHT jump, let alone show any downstream effect on scalp follicles.
What DHT is and why it matters for hair
DHT stands for dihydrotestosterone. It is a stronger version of testosterone that your body makes from testosterone using the enzyme 5-alpha reductase. It is essential in development and useful for muscle and libido throughout life.
DHT is also the hormone that miniaturises hair follicles in people with androgenetic alopecia, the medical name for male pattern baldness and female pattern hair loss. This is why finasteride, which blocks the 5-alpha reductase enzyme and lowers DHT, is a licensed hair-loss treatment.
The key point often missed in the creatine debate is that androgenetic alopecia depends on your genetic sensitivity to DHT at the follicle, not on the absolute level of DHT floating in your blood. Men with high circulating DHT and no baldness genes keep their hair, and men with low circulating DHT and strong baldness genes still lose it.
Small changes in systemic DHT, even the 40% seen in one small study, do not translate cleanly into more shedding at the scalp.
The 2025 12-week trial that finally counted hair
The Lak et al. trial published in April 2025 was the first to actually assess hair follicle health directly following creatine supplementation. It filled the specific gap that had let the 2009 story run unchallenged for so long.
What the Research Says
Lak et al. 2025 randomised 38 resistance-trained males aged 18 to 40 to either 5g of creatine monohydrate daily or placebo for 12 weeks. There were no significant differences in DHT, DHT-to-testosterone ratio, or hair growth parameters between groups (DOI: 10.1080/15502783.2025.2495229). It is the first trial designed to answer this specific question head-on.
The design is not perfect. The trial excluded men with diagnosed androgenetic alopecia, so it does not fully answer the question for someone who is already visibly losing hair. And 38 completers is modest by cardiology standards.
But it is the direct hair evidence the myth-busting side of this debate had been waiting for, and it lines up with every mechanistic and observational finding that came before it. The reasonable read is that if creatine were doing something to hair, we would see it by now.
If male pattern baldness runs in your family
You should still take creatine if you want the strength, cognitive, and recovery benefits it offers. The evidence does not support skipping it because a grandfather went bald early. But there is a sensible way to hedge if the anxiety is genuinely stopping you from starting.
Skip the loading phase. The 2009 rugby study used a 25g loading dose that most people never need anyway, and the DHT signal it produced has never reappeared at 5g maintenance in later work. Starting at 3 to 5g a day from day one gets you to a fully saturated muscle store within three to four weeks with no meaningful lag in benefits.
Second, if you notice any change in shedding after starting, keep a photo diary of your hairline over eight to twelve weeks and speak to your GP. Normal shedding is 50 to 100 hairs a day and shifts across seasons anyway, so an eyeball impression is a poor test.
The real side effects worth knowing
Creatine has a genuinely clean safety profile, but there are two effects worth setting expectations around because both get mistaken for something more serious. The first is intracellular water retention and the second is short-lived GI discomfort during high-dose loading.
| What people report | What is actually happening |
|---|---|
| Scale weight up 1 to 2kg in the first two weeks | Water pulled into muscle cells with the creatine. Not fat gain and not bloating around the waist. |
| Stomach cramps or loose stools on high doses | Dose too large for one sitting. Splitting a loading dose across three or four servings, or skipping loading entirely, resolves it. |
| Feeling of fullness or "puffy" muscles | The same intracellular water effect. Usually the reason creatine works, not a side effect. |
| Kidney damage worries | Not supported by clinical trials in healthy adults. Creatinine on blood tests can rise slightly because creatinine is a breakdown product of creatine, but eGFR interpretation should account for that. |
How to take creatine: loading vs no loading
Both approaches end up in the same place. Loading gets you there faster and gives you a slightly stronger acute training bump, but it is not necessary and it is the phase that produced the DHT signal in the 2009 study, so it is easy to skip.
| Protocol | Dose | Time to saturation |
|---|---|---|
| Standard loading | 20 to 25g per day split across 4 servings, for 5 to 7 days, then 3 to 5g maintenance | About one week |
| No loading | 3 to 5g per day from day one, indefinitely | Three to four weeks |
Timing across the day is a smaller lever than most social media suggests. The ISSN position stand notes taking creatine close to training may have a modest edge on rest-day timing for muscle uptake, but the day-to-day difference is small once you are saturated. What matters most is that you take it every day, including rest days.
Powder vs tablets: does the format matter here?
Not for hair. Both are creatine monohydrate, which is the only form with a strong evidence base and the form used in every trial referenced above, including the 2025 hair study.
Format choice is a convenience and value question. Powder is cheaper per gram and mixes into water, coffee, or a protein shake, while tablets bypass the mixing step and are easier for a lunchbox or a rest-day dose. Whichever you use, the daily 5g of monohydrate is what matters.
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Skip anything sold as "creatine HCl", "buffered creatine", or "creatine ethyl ester" that costs three times the price. None of it beats plain monohydrate in the head-to-head trials that exist, and monohydrate is what has the entire safety literature behind it. Our creatine powder vs tablets UK guide has a fuller breakdown if you want the numbers.
Signs you should stop or see your GP
None of the following are common on creatine, and most creatine users will never hit them. But it is worth naming what a real problem would look like so you do not mistake normal water weight for something to worry about.
Worth Knowing
Speak to your GP before starting if you have known kidney disease, are pregnant or breastfeeding, are under 18, or are already taking a medication that affects your kidneys such as long-term ibuprofen or diclofenac. Stop and get advice if you develop new lower back pain, dark cola-coloured urine, or sudden ankle swelling that does not settle.
None of those are creatine-specific warnings. They apply to any supplement you might add to a stack, and they are the same signals you would flag with a new prescription. The current UK MHRA position on creatine as a food supplement is unchanged, and no red-flag safety signal has appeared from post-market surveillance either.
Key Takeaway
The 2009 rugby study is where the myth started, and the 2025 12-week trial is the direct hair evidence that should retire it. If you have wanted the strength and recovery benefits and been putting it off, plain 5g of creatine monohydrate a day is the answer, skipping the loading phase entirely if it helps you feel more comfortable about starting.
Frequently asked questions
Does creatine make you bald?
No. No controlled trial has shown creatine causes baldness or accelerates androgenetic alopecia. The one 2009 study that measured a rise in DHT never measured hair itself, and the 2025 12-week trial that did measure hair found no difference from placebo (Lak et al., 2025).
Should I stop taking creatine if my hair is thinning?
Stopping creatine is unlikely to be the fix. New-onset thinning in a UK adult is more commonly explained by iron deficiency, thyroid changes, stress-related telogen effluvium, or genetic pattern hair loss. See your GP for a ferritin and thyroid check before blaming any single supplement.
Does creatine increase DHT?
One 2009 study found a 56% rise in DHT during a 25g loading phase in rugby players, staying inside the clinical normal range. Twelve or more follow-up trials have failed to replicate that rise, including the 2025 hair-follicle trial where DHT did not differ from placebo.
Can I take creatine if I am on finasteride?
Yes, this combination is very common in the strength community and there is no known interaction between creatine and finasteride. Finasteride blocks the 5-alpha reductase enzyme that converts testosterone to DHT, and creatine does not act on that pathway. Speak to whoever prescribed the finasteride if you have specific concerns.
Is loading dangerous for my hair?
There is no evidence that loading harms hair. That said, the 2009 DHT signal that started the myth was measured during a 25g loading phase, so if the anxiety is holding you back from starting at all, simply skip loading and take 3 to 5g a day from day one. Saturation just takes a few weeks longer.
Does creatine work for women, and is the hair risk the same?
Yes, creatine works for women, and the hair signal in the 2009 study was in men only. Female pattern hair loss is driven by many of the same androgen sensitivities but responds differently to circulating hormones. Our creatine for women UK guide covers the benefits and dosing.
Which form of creatine has the safest track record?
Creatine monohydrate. It is the form used in almost every clinical trial, including the 2025 hair-follicle trial and the ISSN 2021 safety position stand. Newer formats like HCl or ethyl ester do not beat monohydrate in the head-to-head studies that exist, and they do not have the long safety record behind them.
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