Creatine Myths Debunked: Hair Loss, Water Retention and the Evidence

If you've been put off creatine, it's probably for one of two reasons: you've read that it makes your hair fall out, or that it leaves you looking bloated. Hair loss tends to worry men more and water retention women more, though both questions come from everyone.

Both myths start from something real. In 2009, researchers did record a rise in a hormone linked to hair loss, and people starting creatine often do see the scale move. What got lost along the way is what those observations actually measured. This article traces each myth to its source and sets out what later research found.

The table below summarises the most common creatine myths, where each one came from, and how strong the evidence against it is.

Where the creatine hair loss myth came from

The hair loss myth traces back to a single small study. In 2009, van der Merwe and colleagues published a trial in the Clinical Journal of Sport Medicine involving 20 college-aged male rugby players.[1]

The creatine group took 25g of creatine a day with 25g of glucose for seven days, a loading phase, followed by 5g a day for a further 14 days. After the loading week, their blood levels of dihydrotestosterone (DHT) were 56% higher than at the start, and they stayed around 40% above baseline through the maintenance phase.

Because DHT is the hormone most closely tied to pattern baldness, the leap to "creatine causes hair loss" was quick. Four limits of the study rarely travelled with it:

• It never measured hair. The researchers tested blood hormone levels only, with no assessment of hair count, shedding or follicle health.

• DHT stayed within the normal range. Even after the increase, the players' DHT levels remained within normal physiological limits 

• It was short and used a loading dose. The study lasted three weeks in total and began at five times the usual daily maintenance dose.

• It has not been replicated. No later trial has reported a comparable rise in DHT with creatine supplementation.

It helps to know what DHT actually does. It is made from testosterone by an enzyme called 5-alpha reductase. In people with a genetic predisposition to pattern hair loss (androgenetic alopecia), DHT binds to receptors in susceptible scalp follicles and gradually shrinks them, producing thinner, shorter hairs over time. This happens in both men and women.

The key word is predisposition. Pattern hair loss is driven mainly by how sensitive your follicles are to normal levels of DHT, not by a short-term change in the hormone. A three-week blood result in 20 rugby players was never going to settle the question either way.

What later research shows on creatine, DHT and hair

Later research has not supported the link. Across the trials that have measured testosterone during creatine supplementation, roughly a dozen in total, there has been no consistent rise.[2] Very few measured DHT, which is one reason the 2009 result lingered.

In 2021, Antonio and colleagues reviewed the most common creatine misconceptions in the Journal of the International Society of Sports Nutrition. They concluded that current evidence does not indicate creatine causes hair loss, while noting that more research would help.

That research arrived in 2025. A randomised, placebo-controlled trial in the same journal gave 45 resistance-trained men aged 18 to 40 either 5g of creatine monohydrate or a maltodextrin placebo every day for 12 weeks.[3] Alongside blood hormones, it assessed hair count directly, using the Trichogram test and the FotoFinder system. It found no differences between the groups in DHT, the DHT-to-testosterone ratio or any hair measure.

The trial has limits worth stating. It lasted 12 weeks, involved healthy young men, and excluded people with diagnosed hair loss disorders, so it cannot speak directly for women or for people whose hair is already thinning. Even so, it was the first trial to look at hair itself, and the honest verdict is clear: current evidence does not show that creatine causes hair loss.

Set side by side, the two studies were answering different questions.

Should you avoid creatine if hair loss runs in your family?

There is no evidence that you need to. Pattern hair loss is driven by inherited follicle sensitivity to normal DHT levels, and creatine has not been shown to raise DHT, so it is unlikely to change your genetic trajectory. The one caveat is that the 2025 trial excluded people with diagnosed hair loss, so this group has not yet been studied directly.

There is also a timing trap worth knowing about. People often start creatine at the same time as other changes: a new training plan, a calorie deficit, a stressful stretch at work. Any of these can trigger a temporary type of shedding called telogen effluvium, which typically appears two to three months after the trigger. By then, creatine is the most visible new habit, so it gets the blame.

If you notice persistent shedding or thinning, whatever you suspect the cause, see your GP or a dermatologist. They can check for common causes such as low iron levels or a thyroid problem and talk through treatment options if pattern hair loss is starting.

Water retention vs bloating: what's actually happening

Creatine does cause some water gain, but it isn't the bloating most people picture. Your muscles store creatine largely as phosphocreatine, part of the system that recycles energy (ATP) during short, intense effort. Creatine is osmotically active, meaning it draws water with it as it moves into muscle cells.

That water sits mainly inside the muscle, which is why muscles can look slightly fuller rather than soft or puffy.

Two other things are often confused with it, and the difference matters.

The practical takeaway is that any early rise on the scale is water stored in muscle, not fat. Our guide to creatine bloating in women goes into more depth on what women in particular notice, and why.

Why any water change is temporary (and how to minimise it)

Most of the early water change comes from the loading phase. Loading means taking 20 to 25g of creatine a day, split into four doses, for five to seven days. Muscle stores fill quickly, water follows, and some people see the scale rise by 1 to 2kg in that first week. 

A steady 3 to 5g a day reaches the same saturated stores, just more slowly, over about three to four weeks.[4] The water shift is smaller and more gradual, and once stores are full, it levels off rather than continuing to build. If you stop taking creatine, stores drift back to baseline over roughly four to six weeks, and the extra water goes with them.

For most people, skipping the loading phase is the simplest fix. Our guide to how much creatine you need covers daily dose, timing and what to do about missed days.

Other creatine myths, quickly answered

Creatine is not a steroid. Your body makes it every day from three amino acids (arginine, glycine and methionine), mainly in the liver and kidneys, and it occurs naturally in meat and fish. It has no structural or hormonal link to anabolic steroids.

Creatine has not been shown to cause cramps or dehydration. The worry grew from anecdotal reports in the 1990s, but controlled studies, including in athletes training in the heat, have not found an increase in either. 

Creatine does not damage healthy kidneys. It does raise blood creatinine, which can make a routine kidney test look worse than it is. Our guide is creatine safe? explains what to tell your GP.

What creatine is actually for

Strip away the myths and creatine's evidence base is unusually solid.  It increases physical performance in successive bursts of short-term, high-intensity exercise, and daily creatine consumption can enhance the effect of resistance training on muscle strength in adults. Doses of 3-5 grams are effective for both use cases.

Both myths in this article began with a real observation that was read as something it wasn't. A hormone rose in a three-week study that never looked at hair count and the scale moved because muscles stored water. The research since has measured what the myths only assumed, and neither holds up. For the bigger picture on what creatine does and who it suits, see our guide to creatine for women.

Frequently asked questions

Does creatine cause hair loss?

No, current evidence does not show that it does. The claim comes from a 2009 study of 20 rugby players that measured DHT rather than hair, and a 2025 randomised trial that assessed hair follicles directly found no difference between creatine and placebo over 12 weeks.

Does creatine increase DHT?

Not consistently. A rise was reported in one 2009 study after a high-dose loading phase, but it has not been replicated, and the 2025 trial found no change in DHT or the DHT-to-testosterone ratio at 5g a day.

Can women lose hair from taking creatine?

There is no evidence that creatine causes hair loss in women. The hair research so far has been in men, so female-specific data is limited, but nothing suggests a link. Women noticing shedding should see their GP, as several common causes are worth checking.

Will my hair grow back if I stop taking creatine?

Creatine has not been shown to cause hair loss, so stopping it is unlikely to change anything. Shedding that coincides with starting creatine often has another trigger, such as stress, illness or a calorie deficit, and usually settles on its own. If it persists, see your GP.

Is creatine water weight permanent?

No. It is water stored inside muscle cells, which levels off once stores are saturated and fades over roughly four to six weeks if you stop. A steady 3 to 5g daily dose keeps the initial change small.

Does creatine make your face look puffy?

There is no evidence that it does at standard doses. Creatine draws water mainly into muscle rather than the tissue under the skin, so facial puffiness usually has other causes, such as salt, alcohol or poor sleep.

Is creatine a steroid?

No. Creatine is a compound the body makes from three amino acids and also gets from meat and fish. It is not a hormone and has no structural link to anabolic steroids.

References

[1] van der Merwe J, Brooks NE, Myburgh KH. Three weeks of creatine monohydrate supplementation affects dihydrotestosterone to testosterone ratio in college-aged rugby players. Clin J Sport Med. 2009;19(5):399-404. DOI: https://doi.org/10.1097/JSM.0b013e3181b8b52f

[2] Antonio J, Candow DG, Forbes SC, Gualano B, Jagim AR, Kreider RB, et al. Common questions and misconceptions about creatine supplementation: what does the scientific evidence really show? J Int Soc Sports Nutr. 2021;18(1):13. DOI: https://doi.org/10.1186/s12970-021-00412-w

[3] Lak M, Forbes SC, Ashtary-Larky D, Dadkhahfar S, Robati RM, Nezakati F, et al. Does creatine cause hair loss? A 12-week randomized controlled trial. J Int Soc Sports Nutr. 2025;22(sup1):2495229. DOI: https://doi.org/10.1080/15502783.2025.2495229

[4] Hultman E, Söderlund K, Timmons JA, Cederblad G, Greenhaff PL. Muscle creatine loading in men. J Appl Physiol (1985). 1996;81(1):232-7. DOI: https://doi.org/10.1152/jappl.1996.81.1.232