06:45
creatine
Norton argues there is no evidence that creatine monohydrate causes hair loss: the sole prior claim rests on a ~20-year-old, 3-week rugby-player study that only measured DHT (not hair loss itself), while a new 12-week double-blind placebo-controlled RCT that directly measured hair growth/loss found no differences between creatine and placebo groups in hair outcomes, DHT, testosterone, or free testosterone.
The 'creatine causes hair loss' claim traces to a single study from almost 20 years ago that gave creatine to rugby players for 3 weeks with a very low subject number.
That original study found increased DHT but no changes in testosterone or free testosterone, and it did not measure actual hair loss or hair growth.
Norton's central methodological point: you cannot claim a substance causes X if you did not actually measure X — measuring precursors or biochemical pathways is not equivalent to outcome data.
A new human RCT gave one group 5g/day creatine and another group 5g/day maltodextrin (double-blind, placebo-controlled) over 12 weeks of resistance training, and this time directly measured loss or growth of hair.
After 12 weeks, the new study found no differences between groups in any marker measured: no difference in hair growth or loss, DHT, testosterone, or free testosterone.
In both the placebo and creatine groups, total testosterone increased while free testosterone decreased over the 12 weeks; DHT did not change in either group and was not different at baseline or endpoint.
Norton states he will change his position if five more studies emerge showing creatine causes hair loss, but currently all high-quality direct evidence indicates it does not.
Norton advises against creatine forms other than monohydrate, framing them as marketing plays by companies that can't profit selling monohydrate due to heavy price competition.
Creatine ethyl ester is described as having been shown less effective than monohydrate.
Buffered creatine and creatine hydrochloride are described as equally effective to monohydrate but costing two to four times as much.
Marketing claims that alternative creatine forms 'don't cause water retention' are framed by Norton as effectively admitting those forms are less anabolic, since intracellular water retention is tied to creatine's anabolic effect.
For people with GI discomfort from creatine monohydrate, Norton recommends splitting the 5g daily dose into smaller doses rather than switching to a different creatine form.
Norton discloses that his own recovery product (Outwork Nutrition) uses creatine monohydrate at a clinical dose rather than a more expensive alternative form.
Norton's outcome-vs-mechanism framing (you can't claim X without measuring X) is presented as a general standard for evaluating supplement research claims, not just this specific study.
The new study appears designed to directly address the old study's gaps: 12 weeks versus 3 weeks, and direct hair-loss measurement versus DHT-only measurement.
Total testosterone rose and free testosterone fell in BOTH the creatine and placebo groups over the 12-week resistance-training protocol, suggesting these shifts track with training itself rather than with creatine supplementation.
Norton reframes the industry narrative around water retention: rather than a drawback to be engineered away, he argues intracellular water retention is likely part of creatine's anabolic mechanism, so claiming to avoid it undercuts a product's own effectiveness claim.
The commercial argument Norton makes is that creatine monohydrate's commoditization (many sellers, thin margins) is the actual driver behind companies inventing 'improved' creatine forms, not genuine efficacy gains.
«You cannot claim something does X if you don't actually measure X.»
— 01:57
«Can we please stop saying that creatine causes hair loss? There is no evidence to support this and all of the direct evidence we do have says that it does not.»
— 02:21
«If we get five studies after this showing hair loss from creatin, I will change my tune.»
— 02:35
«No difference in hair growth or loss, no difference in DHT, no difference in testosterone, and no difference in free testosterone.»
— 02:58
«If you are saying that your creatine does not cause water retention, you are actually saying that your creatine is not anabolic.»
— 05:21
«They just lie to try to take money from you.»
— 05:47
Reception
Audience is predominantly skeptical, with most-engaged comments criticizing the study's methodology and promoting a competing critical video over the presenter's conclusions.
The video is a myth-debunking educational piece that leans on one newly published 12-week RCT to counter a single older study, delivered with high confidence, a explicit standard for what counts as valid evidence, and a closing pivot into promoting the presenter's own creatine monohydrate supplement.
06:45