Does Creatine Cause Hair Loss? What the Evidence Actually Shows

The short version

There is no good evidence that creatine causes hair loss. The entire fear traces to one 2009 study of 20 college rugby players that reported higher DHT, a hormone tied to genetic balding, after three weeks of creatine [1]. That study never measured hair itself. No trial since has reproduced the DHT change, and a 2025 randomized trial that looked directly at hair found no difference between creatine and placebo [2]. If you carry a genetic risk for male-pattern baldness and you're worried, that is a conversation with a clinician about proven treatments, not a reason to avoid one of the most studied supplements on the shelf.

Where the fear started: one 2009 rugby study

The whole story rests on a single paper. In 2009, van der Merwe and colleagues ran a double-blind, placebo-controlled crossover study in 20 college-aged rugby players in South Africa. Participants loaded with creatine (25 g/day for 7 days), then took a 5 g/day maintenance dose for 14 more days, with a washout between conditions [1].

Testosterone did not change. But DHT rose about 56% after the loading week and stayed roughly 40% above baseline during maintenance, and the DHT-to-testosterone ratio climbed 36% then settled around 22% above baseline [1]. Because DHT is the androgen that shrinks hair follicles in people genetically prone to male-pattern baldness, the internet connected the dots and a myth was born.

What that study measured, and what it didn't

The study measured a hormone in blood. It did not measure hair. There were no follicle counts, no hair-density scans, no shedding logs, and no assessment of balding. The jump from a blood ratio to hair falling out was assumed, never demonstrated.

It was also small and narrow: 20 young athletes, mid-competitive-season, followed for three weeks. Even after rising, DHT stayed within the normal physiological range. A crossover design with a washout is reasonable, but one small study is a hypothesis worth testing, not a settled finding. On its own it tells you creatine may nudge a hormone ratio in some men. It tells you nothing about whether hair actually thins.

The weight of later evidence

For more than a decade, no study reproduced that DHT jump. Replication is how research separates a real effect from a statistical fluke, and here the follow-up confirmation simply never arrived.

The 2017 International Society of Sports Nutrition position stand, which reviewed the safety literature in depth, concluded that creatine does not meaningfully alter circulating testosterone or other androgens in a way that would drive hair loss [3]. A 2021 review written specifically to address creatine myths listed "does creatine cause hair loss / baldness?" as one of its questions and found the evidence does not support it [4]. The scientific consensus moved on; the internet rumor did not.

The 2025 trial that finally looked at hair

In 2025, researchers ran the test the original study skipped. A 12-week randomized controlled trial had 38 men complete supplementation while investigators measured hair directly, not just hormones.

There was no significant difference between creatine and placebo in DHT levels, in the DHT-to-testosterone ratio, or in hair growth measures [2]. It was the first study to assess follicle health directly under creatine, and it found nothing. The trial has limits worth naming: a modest sample of 38, no genetic screening for balding predisposition, and an older hair-assessment method. It is not the final word. But it is the only study to test hair head-on, and it points the opposite way from the myth.

Is the fear even biologically plausible?

The worry has a logical skeleton: DHT drives male-pattern hair loss, so anything that raises DHT might speed it up. Two things weaken that chain.

First, only the 2009 study ever showed creatine raising DHT, and even there testosterone, the raw material DHT is made from, did not change, which makes a large sustained conversion effect hard to explain. Second, male-pattern baldness depends on inherited follicle sensitivity to DHT, not on circulating levels alone. The drugs that actually treat it, finasteride and dutasteride, suppress DHT substantially and still take months to show effect. A modest, unreplicated blood change is a different order of magnitude from that.

A measured takeaway

The honest read: there is no reliable evidence that creatine causes or worsens hair loss. If you have no family history and no thinning, this is a non-issue you can stop thinking about.

If you are already noticing a receding hairline or diffuse thinning, creatine is almost certainly not the cause, and stopping it will not regrow hair. The productive move is getting the pattern evaluated and discussing proven options such as minoxidil or finasteride with a clinician. If it would settle your mind, take a baseline scalp photo before you start and reassess in a few months. In most cases the thing worth addressing is the worry, not the creatine.