Supplements · Metabolic & Cardiometabolic
creatine does not cause hair loss
In plain terms: Will creatine make your hair fall out?
Part of: 🧪 creatine
Probably not. The fear comes from a single small study that saw a rise in a hair-related hormone but never actually checked hair. A 2025 trial that did measure hair found no effect — reassuring, though the direct evidence is still thin.
Evidence ladder
How far up the ladder this claim has climbed. A high consensus on a low rung means "consistent so far," not "proven in people."
Top evidence so far: Human trials (RCT / n-of-1)
How the studies fall
What the evidence shows
The hair-loss worry traces to a **single** small study that found a rise in the DHT:testosterone ratio (a hormone linked to male-pattern baldness) — but it never measured hair. A 2025 12-week RCT that *did* measure hair found no effect. So current direct evidence says no, but the base is thin (one direct trial) — graded leans-support, not settled.
The evidence (3)
| Source | Grade | Stance | Quality | Finding |
|---|---|---|---|---|
| Antonio 2021 · J Int Soc Sports Nutr | observational | supports | low | Review: no direct evidence creatine causes hair loss; the claim derives from one DHT surrogate study. |
| Lak 2025 · J Int Soc Sports Nutr | RCT | supports | moderate | 12-week RCT directly measuring hair outcomes: creatine did not cause hair loss. |
| van der Merwe 2009 · Clin J Sport Med | RCT | mixed | moderate | Small crossover in rugby players: creatine raised the DHT:testosterone ratio (a mechanistic hair-loss concern) but did not measure hair itself. |
Disagree, or know a study we missed?
We grade by evidence, not opinions. The way to weigh in is to point us to a study we haven't cited (check the evidence table above first), or to flag a problem with one we have. Every submission is reviewed; if it holds up, the grade updates and shows in Science Changes Its Mind.
Opens a short form. You'll sign in with Google so submissions are tied to a real account — we don't display your identity, and we only accept a link we can verify (PubMed, DOI, ClinicalTrials.gov).
Educational only, not medical advice. Grades and scores reflect published evidence weighted by study design and quality; see the methodology.