Does creatine cause hair loss? The evidence, explained for women.
Published June 12, 2026· Updated June 12, 2026· 8 min read
Does creatine cause hair loss? There’s no direct evidence that it does. One small 2009 study found a rise in DHT in male rugby players — but it never measured hair, has never been replicated, and wasn’t done in women. The current research-review consensus is that creatine doesn’t cause hair loss.
What the 2009 study actually found (and didn’t)
Nearly every “creatine and hair loss” headline leads back to one paper. In 2009, van der Merwe and colleagues gave creatine to 20 college-aged male rugby players and tracked their hormones over a three-week loading-and-maintenance window. They reported a rise in DHT (dihydrotestosterone), a hormone involved in male-pattern hair loss, that stayed elevated across the roughly seven weeks of the study (van der Merwe et al., 2009).
Here’s the part that gets lost: the study measured a hormone marker, not hair. Nobody’s scalp was assessed, no one’s hairline was tracked, and the sample was 20 young men — no women at all. It was a small, single result, and in the years since, no other team has reproduced the DHT finding. A blood marker that moved once, in one small group, is a hypothesis to follow up on — not proof that creatine thins your hair.
What the rest of the research shows
When you widen the lens past that single study, the picture is reassuring. Broader reviews of creatine’s effects find no established link between creatine and hair loss, and they note that the DHT result has simply never been replicated (Antonio et al., 2021). The International Society of Sports Nutrition’s safety review reached a similar place: creatine monohydrate is one of the most-studied supplements there is, and hair loss isn’t among its documented effects (Kreider et al., 2017).
There’s a related point worth knowing. The worry assumes creatine cranks up your androgens — but the wider evidence doesn’t support that either. Creatine doesn’t reliably raise testosterone, which undercuts the “it floods you with hormones and thins your hair” story before it starts (Antonio et al., 2021).
DHT and hair loss, separated from creatine
It helps to untangle two things. DHT is a real player in hair loss — but specifically in androgenetic alopecia (male- and female-pattern thinning) and only in people who are genetically susceptible to it. In those people, hair follicles are sensitive to DHT and gradually miniaturize over years. That’s a slow, genetics-driven process, not something a brief change in a blood marker sets off.
So a single seven-week study showing a DHT rise — with no hair measured and no replication — isn’t evidence of hair loss. It’s a data point about a hormone, in a small group, that hasn’t held up since. For most people, whether their hair thins comes down to genetics and the things below, not to one marker on one old blood panel. You can read more about the research on creatine and DHT if you want the deeper version.
What women should especially know
This matters most for women, because the original study has even less to say about you than it looks. Female-pattern hair thinning generally runs a different hormonal pathway than the male androgenetic alopecia that 2009 paper brushed against — and the study didn’t include any women to begin with. Applying a DHT result from 20 male rugby players to a woman’s hairline is a stretch the data can’t support.
When women do notice thinning, the bigger drivers are almost always elsewhere: genetics, thyroid issues, low iron or ferritin, the postpartum shed after having a baby, and the hormonal shifts of perimenopause and menopause. Those are the things actually worth checking — far more than a daily creatine chew. If you’re also wondering whether creatine can break out your skin, the same pattern holds: the supplement keeps getting blamed for things it doesn’t cause.
If hair loss already runs in your family
Maybe thinning runs in your family, or you’re managing PCOS, or you’re moving through peri- or menopause. The responsible position is the same one the evidence supports: creatine hasn’t been shown to cause hair loss, so there’s no research reason to avoid it for that. But you also know your own body and history better than any study average.
So if you have an active hair or scalp condition — or a strong family pattern that worries you — loop in your doctor or a dermatologist before starting anything new, and keep an eye on how things go. That’s good practice with any supplement. This isn’t medical advice; it’s the case for making the call with a professional who can see your full picture. If reassurance is what you’re after, our women’s creatine chews keep the formula clean and fully disclosed.
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Where the creatine and hair loss worry comes from
It traces back to one small 2009 study. Researchers gave creatine to 20 male rugby players and measured a rise in DHT, a hormone involved in male-pattern hair loss (van der Merwe et al., 2009). From there, the internet played a long game of telephone: “DHT went up” quietly became “creatine causes hair loss.”
But the study never looked at anyone’s hair, was never replicated, and didn’t include a single woman. A raised DHT marker on a blood test is not the same thing as losing hair — and for most people, especially women, DHT isn’t the driver of thinning at all.
The hair questions women actually ask
Should I avoid creatine if hair loss runs in my family?
A family history of thinning isn’t a research reason to skip creatine — it hasn’t been shown to cause hair loss. If you have a strong family pattern or an active scalp condition that worries you, it’s reasonable to mention it to your doctor or dermatologist before starting, but the evidence doesn’t flag creatine as the trigger.
Does the dose matter for hair?
There’s no evidence that a higher dose affects your hair, because there’s no established link in the first place. A steady 5 grams a day sits well within the studied range, and you don’t need a loading phase. Taking more wouldn’t protect your hair, and the standard dose hasn’t been shown to harm it.
If I notice hair changes after starting, should I stop?
Hair sheds for many reasons — stress, illness, thyroid shifts, low iron, postpartum changes, and the normal hair cycle — and the timing can easily overlap with a new supplement without being caused by it. If you’re noticing real changes, it’s worth seeing a doctor or dermatologist to find the actual cause rather than assuming it’s the creatine.
Does creatine cause hair loss in women?
The one study people cite was done in 20 men, measured a DHT marker rather than hair, and was never replicated (van der Merwe et al., 2009). Female-pattern thinning generally runs a different pathway, and broader reviews find no link between creatine and hair loss (Antonio et al., 2021). The usual drivers for women are genetics, thyroid, iron, postpartum, and perimenopause.
Is creatine safe with PCOS?
Creatine isn’t shown to cause hair loss, and it’s widely studied as well-tolerated. That said, PCOS involves its own hormonal picture, so if you’re managing it — especially with hair thinning as a symptom — it’s worth running creatine past your doctor before adding it. This isn’t medical advice; it’s a nudge to make the call with someone who knows your history.
Worried about your hair? The evidence is on your side.
Clean, third-party-tested creatine with every ingredient on the label — nothing hidden to blame.