Creatine and Hair Loss: I Looked at the Research So You Don't Have To
The Short Answer: No, Creatine Does Not Cause Hair Loss — And a 2025 Study Finally Proves It
No, creatine does not cause hair loss — and a landmark 2025 randomized controlled trial published in the Journal of the International Society of Sports Nutrition is the first study to actually measure hair follicle health directly after creatine supplementation. It found no effect whatsoever. If you've been holding back from taking creatine because of something you read about DHT, I want you to read every word of this post — because I looked at the science so you wouldn't have to, and what I found surprised even me.
I'm Cecilia, a unit patient care specialist with over 30 years of clinical experience, and the founder of ATO Health Products. I hear this question constantly — from women in their 50s, from patients managing multiple health concerns, from people who want the benefits of creatine but are nervous about a rumor they can't shake. So let me walk you through exactly what the science says, what it doesn't say, and what I've learned from decades of watching real patients navigate these decisions.
Where Did the Creatine-Hair Loss Myth Come From?
It all traces back to a single study from 2009. Researchers at Stellenbosch University in South Africa looked at a group of college-aged male rugby players and had them take creatine for three weeks — first a loading phase, then a maintenance dose. At the end of the study, they measured hormone levels in the blood and found that the ratio of DHT (dihydrotestosterone) to testosterone had increased by roughly 56% during the loading phase.
DHT is a hormone that, in people with a genetic predisposition to pattern baldness, can cause hair follicles to shrink over time. So the reasoning went: creatine raises DHT → DHT causes hair loss → creatine causes hair loss. It spread like wildfire across fitness forums, Reddit, and YouTube.
But here's the critical part almost everyone misses: that 2009 study never measured hair loss. Not one participant was evaluated for hair thinning, shedding, or follicle health. The entire myth is built on a logical leap — an association between a hormone and a potential downstream effect that was never actually observed.
The study also had serious limitations: it was small (just 20 young men), it used a loading protocol that's higher than most people take, and it has never been replicated. Other studies looking at creatine and DHT found no significant increases at all.
Quotable stat: The 2009 rugby study that started the creatine-hair loss myth never directly measured hair loss in any participant — it only measured a single hormone ratio in 20 young men over three weeks.
What a 2025 Randomized Controlled Trial Actually Found
In 2025, researchers finally did what no one had done before: they directly measured hair follicle health in people taking creatine supplementation over a meaningful time period.
The study, published in the Journal of the International Society of Sports Nutrition (Lak et al., 2025), enrolled 38 resistance-trained men in a 12-week randomized, double-blind, placebo-controlled trial — the gold standard in research design. Half took creatine monohydrate at standard doses. Half took a placebo. Neither group knew which they were getting.
The results? There were no significant differences in DHT levels, DHT-to-testosterone ratio, or any hair growth parameters between the creatine group and the placebo group. The researchers concluded this was "the first study to directly assess hair follicle health following creatine supplementation" and that it provides "strong evidence against the claim that creatine causes hair loss."
Quotable stat: A 2025 randomized controlled trial (Lak et al., Journal of the International Society of Sports Nutrition) found no significant differences in DHT levels or hair loss parameters between people taking creatine monohydrate and a placebo group over 12 weeks — the first study to directly measure this.
This is a big deal. Not because creatine needed defending — the science was already leaning this way — but because we finally have direct, controlled evidence that putting creatine in your body does not damage your hair follicles. After 16 years of a myth that scared millions of people away from a genuinely beneficial supplement, we have an answer.
What About Women? Here's Why the Risk Is Even Lower for You
The original 2009 study was conducted entirely on young college-aged men. Men naturally have much higher DHT levels than women — testosterone and DHT are male-dominant hormones. Women produce both, but in significantly smaller quantities.
Even if you accepted the theoretical premise that creatine could raise DHT (which the 2025 research doesn't support), the baseline DHT in a woman's body is dramatically lower than in a man's. The absolute increase — if there were one — would be far less significant from a hair health standpoint.
Dermatologists who specialize in hair loss have been saying this for years. The creatine-hair loss concern applies most theoretically to men who already carry a genetic predisposition to male-pattern baldness. For women, and especially for women over 40 who are my primary audience, the math just doesn't support the fear.
I've recommended creatine to women patients and friends for years. Not one of them has come back to me and said their hair changed. What has changed for many of them is their energy, their muscle resilience, and their mental clarity — which I write about in detail in my post on creatine for women over 50 and what the research actually shows.
The Real Causes of Hair Loss I've Seen in 30 Years of Patient Care
Here's something I wish more people talked about: the things that actually cause hair loss in women over 40 are all around us — and creatine isn't one of them.
In three decades of working in patient care, I've watched hair loss concerns come up over and over again. And the causes I see most consistently are:
- Perimenopause and menopause — the drop in estrogen changes how hair follicles function. This is the most common driver of hair thinning I see in women in their late 40s and 50s.
- Thyroid dysfunction — both hypothyroidism and hyperthyroidism can cause significant shedding. If you're experiencing hair loss, your thyroid should be the first thing you and your doctor evaluate.
- Nutritional deficiencies — iron, ferritin, zinc, biotin, and protein deficiency are all real contributors. Many of my older patients are simply not getting enough protein, which is one reason I support creatine — it supports muscle protein synthesis, meaning your body has more to work with.
- Chronic stress and elevated cortisol — telogen effluvium (stress-related shedding) is extremely common and often goes undiagnosed for months.
- Certain medications — blood thinners, statins, antidepressants, and blood pressure medications all have hair thinning as a known side effect.
If you're worried about your hair and you're considering creatine, I'd encourage you to talk to your doctor about your thyroid levels, your ferritin, and your hormones before you point a finger at a supplement that the evidence consistently clears.
Quotable stat: According to the American Academy of Dermatology, the most common causes of hair loss in women include hormonal changes (menopause, thyroid issues), nutritional deficiencies, and stress — not supplementation with creatine monohydrate.
What About People With a Family History of Hair Loss?
This is one of the most common questions I get, and it deserves a direct answer. If you have a strong family history of female-pattern hair loss — or if you're a man with significant genetic predisposition to male-pattern baldness — should you avoid creatine?
Based on the current evidence, I don't think so. The 2025 study enrolled resistance-trained men, who are actually the demographic with the highest theoretical risk, and found no effect on hair. But I also believe in being honest about uncertainty: that study lasted 12 weeks with 38 participants, and there's still more research to be done on very long-term use in people with strong genetic predispositions.
My practical advice: if you're worried and you want peace of mind, start at the lower end of the dosing range — 3 grams per day rather than 5 — and skip the loading phase altogether. The loading phase is optional, rarely necessary for adults over 40, and it was the phase that produced the most elevated DHT in the 2009 study. I cover the right dosing approach in my post on creatine safety for older adults.
Also: watch your hair. If after 4–6 weeks you genuinely notice a change you're uncomfortable with, stop. Your body is always the best feedback mechanism you have. But based on everything the research shows, I'd be surprised if that happened.
What I Actually Tell My Patients Who Ask Me This Question
When a patient sits across from me — usually a woman in her 50s, often dealing with some perimenopause-related changes, maybe already noticing some hair thinning she's concerned about — and she asks me, "Should I be worried about creatine and my hair?", here's what I tell her:
"The fear is based on a 16-year-old study of young male rugby players that never actually measured anyone's hair. The newest research — a real controlled trial that directly measured hair health — found no effect. And honestly, if I had a dollar for every medication your doctors haven't warned you about that does affect hair, I'd be retired." (Sometimes I actually say that. Thirty years gives you some latitude.)
What I tell her next is this: the things you're more likely to gain from creatine — better muscle retention, stronger bones, improved cognitive function — are things your body genuinely needs right now. The research on creatine and recovery after 50 is compelling. The research on creatine and brain function in older adults is compelling. What's not compelling is a myth built on a single, unreplicated, small study that didn't even measure what people think it measured.
The benefits are real. The hair fear is not evidence-based. That's my honest professional take.
If you're ready to experience those benefits yourself, ATO Health Creatine Monohydrate is pharmaceutical-grade, micronized, unflavored, and designed specifically for adults over 40. No fillers, no hype — just 500g of the most researched supplement on the market.
One More Thing: The Real Cost of Avoiding Creatine Because of This Myth
I want to end on something nobody else is saying in these articles: every year that adults over 40 avoid creatine because of an unfounded hair loss rumor, they're missing out on measurable, real, documented benefits.
After 50, we lose 1–2% of muscle mass per year. We lose bone density. Cognitive processing slows. These aren't vague concerns — they're measured, documented, clinical realities that affect quality of life, independence, and longevity. Creatine is one of the most evidence-backed tools we have to slow all three of these processes.
The myth that creatine causes hair loss has kept real people from a real tool that could meaningfully improve their lives. I find that genuinely frustrating. Which is why I did the research — and why I'm sharing exactly what it says.
For more on what creatine can do for you at this stage of life, read my post on what the creatine research really shows for women over 50.
🎥 Watch: ATO Health Creatine
Frequently Asked Questions
Does creatine cause hair loss?
No. A 2025 randomized controlled trial — the first to directly measure hair follicle health in creatine users — found no significant differences in DHT levels, DHT-to-testosterone ratio, or any hair growth parameters compared to a placebo group. The long-standing fear was based on a 2009 study of rugby players that measured a hormone ratio but never actually measured hair loss.
Does creatine increase DHT?
One small 2009 study found that a creatine loading phase temporarily raised the DHT-to-testosterone ratio in young male rugby players. However, multiple studies since then — including a 2025 12-week randomized controlled trial — have not replicated this finding and found no significant DHT increase from standard creatine doses. The original study has never been independently replicated.
Can women with thinning hair take creatine?
Yes — and for women especially, the creatine-hair loss concern is even less supported. Women naturally have much lower DHT levels than men, so even the theoretical mechanism behind the myth is far less relevant. The most common causes of hair thinning in women over 40 are hormonal changes (menopause, thyroid), nutritional deficiencies, and stress — not creatine supplementation.
What if I have a family history of hair loss — should I still take creatine?
Based on current evidence, yes — creatine appears safe even for those with a genetic predisposition to hair loss. If you want extra caution, skip the loading phase and start at 3 grams per day instead of 5. The 2009 study showing DHT changes used a loading protocol; maintenance doses show no significant hormone impact.
I started creatine and noticed more hair shedding — is it the creatine?
It's very unlikely to be the creatine. Hair shedding in people over 40 is typically related to hormonal shifts (perimenopause, thyroid changes), iron or ferritin deficiency, stress, or certain medications. If you're experiencing increased shedding, speak to your doctor and ask for a thyroid panel and a ferritin level before attributing it to creatine — which the controlled research does not implicate.
What does the most recent research say about creatine and hair loss?
The most current evidence comes from a 2025 study (Lak et al.) published in the Journal of the International Society of Sports Nutrition. It was a 12-week randomized, double-blind, placebo-controlled trial — the gold standard. It found no significant changes in DHT levels, DHT ratios, or any measure of hair follicle health in the creatine group compared to placebo. The study concluded this provides "strong evidence against the claim that creatine causes hair loss."
Should I skip the creatine loading phase to reduce any potential hair risk?
The loading phase is optional and generally unnecessary for adults over 40. If you're concerned, you can absolutely skip it — start with 3–5 grams per day consistently and your body will reach the same saturation level within 3–4 weeks. Most adults don't need to load at all, and the 2009 study that found DHT changes used a loading protocol specifically.
Ready to give creatine a fair trial? ATO Health Creatine Monohydrate is pharmaceutical-grade, micronized, and unflavored — 500g designed specifically for adults over 40. No loading phase required, no gimmicks. Just the cleanest form of the most-researched supplement available, at a price that makes sense: $24.95 for a full 100-day supply at 5g/day. Order yours here →
About the Author
Cecilia is a unit patient care specialist with over 30 years of clinical experience. She founded ATO Health Products to bring pharmaceutical-quality supplements to adults who deserve straight answers — not marketing hype. Based in Little Rock, Arkansas.
Have you been avoiding creatine because of the hair loss concern? Or have you been taking it and noticed nothing wrong? I'd love to hear your experience in the comments below — real stories from real people are some of the most valuable information I can share with this community.