Does creatine cause hair loss is probably the most common reason women decide against trying it, and the answer is more specific than either side of the argument usually admits.
The entire concern traces back to one study, published in 2009, involving 20 male rugby players. It is worth knowing exactly what that study did, because once you do, the question becomes much easier to think about.
The single study behind the whole fear
The 2009 trial in the Clinical Journal of Sport Medicine was a properly designed piece of work: double blind, placebo controlled, with a crossover and a six week washout. Twenty college-aged male rugby players in South Africa loaded 25 grams of creatine a day for a week, then took 5 grams a day for a fortnight.
The results were clear. Testosterone did not change at all. Dihydrotestosterone, usually shortened to DHT, rose by 56% after the loading week and was still 40% above baseline after two weeks of the maintenance dose. The ratio of DHT to testosterone went up 36%, settling at 22% above baseline.
Now the part that almost never gets mentioned. That study measured hormones in blood. It did not measure hair. Nobody was assessed for shedding, thinning, density or hair loss of any kind. The researchers themselves concluded only that further investigation was warranted.
Why the worry is not ridiculous
It would be easy to dismiss this, and that would be just as sloppy as the scare. DHT is genuinely implicated in hair loss.
A 2024 review in Biomedicines on the hormonal background of non-scarring hair loss sets out the mechanism: androgen excess, including DHT, can cause miniaturisation of hair follicles on the scalp, which is the process behind androgenetic alopecia.
So the chain of reasoning is not absurd. Creatine raised DHT in one study, and DHT is involved in pattern hair loss. The problem is that a plausible chain is not evidence, and the step that matters, whether creatine users actually lose more hair, has not been tested.
What that study cannot tell you
Several things limit how far those findings stretch, and they matter more for our readers than for the rugby players.
The dose was 25 grams a day during loading, roughly five to eight times the 3 to 5 grams normally recommended. The participants were 20 young men in a single squad during competitive season. It ran three weeks, which tells you nothing about what happens over years. And a rise in circulating DHT does not automatically mean more DHT acting on hair follicles, since follicle sensitivity is largely genetic and is the reason some men keep their hair with high DHT while others lose it with normal levels.
The 2021 review in the Journal of the International Society of Sports Nutrition lists hair loss among the twelve most common questions and misconceptions about creatine, which tells you how persistent this one is. Worth knowing when you read it: that paper comes from authors with declared ties to the creatine industry, including a lead author who heads an organisation sponsored by creatine manufacturers. Their evidence review is still useful, but it is not disinterested, and I would rather you heard that from me than found it in the footnotes.
Does creatine cause hair loss in women specifically
Every participant in that 2009 study was a young man. Applying it to a woman in her forties or fifties involves two leaps that deserve scrutiny, and they are the reason the standard answer to does creatine cause hair loss is even less useful for women than it is for men.
The first is baseline. A 2021 review in Nutrients on creatine across women’s lifespan notes that females have 70 to 80% lower endogenous creatine stores than males. Women start from a very different place, and the hormonal response to supplementation in women has barely been studied.
The second is what actually drives hair loss in midlife women. The Biomedicines review points at a broader set of causes: hair loss may occur with the oestrogen deficiency that arrives naturally at menopause, and thyroid dysfunction is linked to the most common types of hair loss, alongside cortisol and the stress axis. Iron status matters too, which we covered in our guide to low ferritin symptoms in women.
If your hair is thinning in perimenopause, creatine is far down the list of likely explanations, and the more useful conversation is about ferritin, thyroid and hormones. Our most-read guide on the best foods for hair loss in women covers the nutritional side in detail.
What a hormone change does and does not prove
This is the step where most coverage of the question quietly skips ahead, so it is worth slowing down.
Measuring a hormone in blood tells you the concentration circulating at that moment. It does not tell you how much reaches a particular tissue, how strongly that tissue responds, or what happens over years rather than weeks. In androgenetic alopecia the decisive factor is how sensitive your follicles are to androgens, and that sensitivity is inherited. It is why two men with identical DHT levels can have entirely different hairlines at fifty.
So a 56% rise in circulating DHT is a real finding, and it is still several steps short of a thinning scalp. Treating those steps as if they were one is the error that turned a modest hormone study into a widespread supplement fear.
The honest answer to does creatine cause hair loss
No published study has shown that creatine causes hair loss. One study found it raised DHT in young men at a high dose, and no trial has followed hair outcomes in people taking it.
That is genuinely reassuring, but it is not the same as proof of safety, and anyone telling you the question is settled in either direction is overstating what exists. The truthful position is that a single hormone measurement in 20 men is thin evidence of harm, and an absence of hair studies is thin evidence of safety. Given creatine’s otherwise strong safety record across more than 500 published studies, most people are comfortable with that balance.
If you are already predisposed to pattern hair loss, you are entitled to be more cautious than average, and that is a reasonable personal call rather than a scientific one.
What to do if you want to take it anyway
Stick to 3 to 5 grams a day of plain creatine monohydrate and skip the loading phase. The 25 gram dose in the study that started this worry is not something you need, and avoiding it removes the only condition under which the DHT rise was actually observed. We cover the full picture on dosing in our guide to creatine for women over 40.
Keep the rest of your routine steady for the first few months too. If you start creatine, change your shampoo, begin a new diet and go through a stressful quarter all at once, you will have no way of attributing anything, and the question of whether does creatine cause hair loss applies to you personally becomes unanswerable.
If you are worried, take a photograph of your hairline and parting before you start and again at three months. That gives you something objective, which is considerably better than assessing your own shedding from memory during a period when you are actively watching for it.
And if you notice genuine thinning, see a doctor rather than simply stopping the creatine, because the far more likely causes are worth testing for. A ferritin test and a thyroid panel are inexpensive, widely available, and identify treatable causes that no amount of supplement avoidance will fix. Creatine is protein-adjacent rather than a protein source, so it will not help you hit your daily target either; our protein intake calculator gives you that number, and adequate protein does more for hair than any single supplement.
The wider context
It is worth stepping back. Creatine is among the most studied supplements in existence, with hundreds of trials examining performance, muscle, bone, brain and safety. A single three week hormone study in 20 rugby players has generated more consumer anxiety than the entire remaining literature has generated confidence, which is a reasonable illustration of how risk reads louder than benefit.
It is also worth asking why the question does creatine cause hair loss persists so strongly when the evidence behind it is this thin. Part of the answer is that it is unfalsifiable in everyday life: anyone who starts creatine and later notices shedding has a ready explanation, while shedding has dozens of ordinary causes and most people lose some hair anyway. That pattern keeps the belief alive independently of any data.
That does not make the concern illegitimate. It does mean the evidence supporting creatine’s benefits is much stronger than the evidence suggesting this particular harm, and for most women that asymmetry is the practical answer. If you want the fuller supplement picture, our supplements guides apply the same standard to everything else on the shelf.
Frequently asked questions
Does creatine cause hair loss?
No published study has shown that it does. The concern comes from a single 2009 trial in which 20 male rugby players taking 25 grams a day showed a 56% rise in DHT during loading, settling at 40% above baseline. That study measured blood hormones and never assessed anyone’s hair. No trial since has tracked hair outcomes in creatine users, so there is no direct evidence either way, only an untested mechanism.
Why do people think creatine causes baldness?
Because DHT is genuinely involved in androgenetic alopecia, where androgen excess can cause scalp hair follicles to miniaturise. Creatine raised DHT in that one study, so the reasoning chain looks sensible. What is missing is the final step: nobody has demonstrated that creatine users actually lose more hair than non-users.
Is the risk different for women?
The study that started this involved only young men, so applying it to women requires real caution. Women have 70 to 80% lower natural creatine stores than men, and the hormonal response to supplementation in women is barely studied. Hair loss in midlife women is more commonly linked to falling oestrogen, thyroid dysfunction, stress hormones and low iron than to androgens alone.
Does the dose matter?
It may well. The DHT increase was measured during a loading phase of 25 grams a day, roughly five to eight times the usual recommendation of 3 to 5 grams. Taking the standard daily dose without loading avoids the only circumstance in which the hormonal change was actually observed, though nobody has formally tested whether the effect is dose dependent.
What should I do if my hair thins after starting creatine?
See a doctor rather than simply stopping, because the likely causes are testable and treatable. Low ferritin, thyroid problems, hormonal shifts in perimenopause and telogen effluvium after stress or illness are all far more common explanations. Photographing your hairline before starting and again at three months gives you something more reliable than memory to judge by.
Sources
- Three weeks of creatine monohydrate supplementation affects dihydrotestosterone to testosterone ratio in college-aged rugby players. Clinical Journal of Sport Medicine, 2009
- The Hormonal Background of Hair Loss in Non-Scarring Alopecias. Biomedicines, 2024
- Creatine Supplementation in Women's Health: A Lifespan Perspective. Nutrients, 2021
- Common questions and misconceptions about creatine supplementation: what does the scientific evidence really show?. Journal of the International Society of Sports Nutrition, 2021
This article is general health information for adults and not medical advice. It does not know your history, your medication or your results. For a decision about your own health, talk to a doctor or another qualified clinician who does.
