One study. Twenty rugby players. Three weeks of a loading dose most people never use. Blood drawn at the end to check hormone levels. Hair? Nobody looked. Not one follicle counted, not one scalp photographed, not one strand measured under a microscope.
In 2009, a single research team reported that creatine loading raised dihydrotestosterone — a hormone linked to male pattern baldness — by 56% over the loading phase and 40% during maintenance. The internet compressed "DHT went up in 20 athletes" into "creatine makes your hair fall out," and the claim never stopped traveling.
Does Creatine Cause Hair Loss?
No. A 12-week randomized trial — the first to directly measure hair follicle health after creatine supplementation — found zero change in DHT levels, hair density, hair count, follicular units, and cumulative thickness. Creatine and placebo groups were indistinguishable across every hair measurement.
— Lak et al. 2025 · Journal of the International Society of Sports Nutrition · n=38
In 2025, researchers ran the study the internet had been waiting fifteen years for. Thirty-eight resistance-trained men took either 5 grams of creatine monohydrate or a placebo every day for 12 weeks. Board-certified dermatologists measured their hair at baseline and again at the end — hair count, hair density, growth-phase ratios, terminal-to-vellus ratios, cumulative thickness — all assessed under controlled imaging at the vertex, where male pattern baldness first shows.
Across every measurement, creatine and placebo were identical. DHT levels stayed flat between groups. The DHT-to-testosterone ratio held steady. Hair density, follicular unit count, and the balance between thick terminal hairs and fine vellus hairs all came back unchanged. The 2025 trial didn't just fail to find a link between creatine and hair loss — it measured every plausible pathway to one and found nothing.
The 2009 study that launched the scare measured hormones, not hair. And here is the detail the myth always leaves out: every DHT reading, in both the creatine group and the placebo group, at every time point, fell within the normal physiological range for healthy men. A "56% increase" that starts low and lands in the middle of normal is not the alarm it was sold as. No subsequent study has reproduced even that modest hormonal shift.
The internet compressed 'DHT went up in 20 athletes' into 'creatine makes your hair fall out,' and the claim never stopped traveling.
Separately, a meta-analysis pooling 143 randomized trials and 3,655 participants across three decades of creatine research reported no adverse effects on overall well-being. Three thousand people, thirty years, zero hair loss signal.
The honest limits of what we know: the 2025 trial enrolled men aged 18 to 40 at a standard daily dose. Women weren't studied. Durations longer than 12 weeks and doses higher than 5 grams per day remain untested. Family history of hair loss wasn't controlled for. If you have a diagnosed hair condition, talk to a dermatologist.
Fifteen years of fear came from a study that measured hormones. The study that finally measured hair found nothing to worry about — and what creatine actually builds under the scalp is backed by those same 143 trials, which found zero harm along the way.