Does creatine increase testosterone?

Most controlled trials show creatine does not meaningfully raise total or free testosterone. The famous 2009 van der Merwe study in rugby players showed a 56% increase in DHT (a more potent androgen) after 7 days of creatine loading, but no significant change in testosterone itself. Subsequent studies have not consistently replicated even the DHT finding.

Does creatine cause hair loss?

There is no direct evidence creatine causes hair loss. The concern stems from one study showing elevated DHT, and DHT is implicated in male pattern baldness. But that study has not been cleanly replicated, and millions of men have used creatine for decades without epidemic hair loss. If you are genetically predisposed to MPB and concerned, you can skip it. The general population can use it without worrying.

How much creatine should I take?

3-5 grams of creatine monohydrate daily, every day, with no need to load or cycle. Loading (20 g/day for 5-7 days) saturates muscle stores faster but produces no different long-term outcome. Take it whenever — timing barely matters. Pair with carbs or protein for slightly better uptake.

Is creatine safe for testosterone and the body?

Creatine monohydrate is one of the most studied supplements in the world. It is safe for healthy adults at standard doses. It does not damage kidneys in healthy people, does not dehydrate you, and does not lower testosterone. Skip it only if you have pre-existing kidney disease, in which case talk to your doctor.

Supplement Published April 18, 2026

Creatine and Testosterone: Does It Boost T or Just DHT?

Creatine is the most studied supplement in sports nutrition. It works for strength, power, lean mass, and even cognition. But the testosterone story is more complicated than the bro forums make it sound. Here's what the research actually says — and what to do with it.

The Short Answer

Creatine does not meaningfully raise testosterone. It also does not lower it. It probably does increase DHT — slightly, and not in every study — and that has spawned a small panic about hair loss. The truth is duller and more useful than either side of that argument.

The Famous Rugby Study

In 2009, van der Merwe and colleagues published a study in the Clinical Journal of Sport Medicine using college rugby players. They loaded creatine at 25 g/day for 7 days, then maintained at 5 g/day for 14 days. Total testosterone barely budged. But DHT — the more potent metabolite of testosterone formed by 5-alpha-reductase — went up 56% during loading and stayed elevated 40% above baseline during maintenance.

That single study has carried the entire "creatine causes hair loss" narrative for over a decade. Worth knowing:

It hasn't been cleanly replicated in larger trials.
The study didn't track hair loss or follicle activity. The DHT-to-baldness leap is inferential.
Several other creatine trials have measured androgens and found no DHT spike.

So: take the result seriously, but don't treat it as settled. Most large-scale meta-analyses on creatine and androgens find no consistent hormonal effect.

What Creatine Actually Does

Creatine increases phosphocreatine stores in muscle. That gives you more substrate for ATP regeneration during short, high-intensity bouts — the kind of work where you fail at rep 6 instead of rep 8. Practical effects from decades of research:

5-15% improvement in strength and power output.
Faster recovery between sets.
Modest gains in lean mass over months — partially water, partially real hypertrophy from being able to train harder.
Cognitive benefits, particularly under sleep deprivation or in older adults.
Possible bone density and aging benefits in older populations.

None of those are direct hormonal effects. They're downstream of being able to do more work.

The Indirect T Pathway

Here's where it gets interesting. Creatine lets you train harder. Hard resistance training acutely raises testosterone and, more importantly, supports a body composition that correlates with higher T over time — more lean mass, less belly fat. So even if creatine doesn't directly bump T, it supports the lifestyle that does.

Hair Loss: The Honest Read

If you're genetically predisposed to male pattern baldness, your hair follicles are sensitive to DHT. Even a modest DHT increase could theoretically accelerate loss. But:

The DHT bump from creatine, where it exists, is small compared to the genetic drivers.
Decades of widespread creatine use haven't produced a population-level signal of hair loss.
If you're on finasteride, which blocks 5-alpha-reductase, the DHT pathway is suppressed anyway.

If you have receding hairline already and you're spooked, skip creatine. Otherwise the evidence doesn't support panic.

How to Dose

Standard. 5 g of creatine monohydrate daily, every day. Skip loading. After about 30 days you're saturated.
Loading (optional). 20 g/day split into 4 doses for 5-7 days, then 5 g/day. Saturates faster but the long-term outcome is identical.
Timing. Whenever. With food slightly improves uptake. Pre vs post workout doesn't matter.
Form. Plain creatine monohydrate. The fancy forms (HCl, ethyl ester, buffered) have no demonstrated advantage and cost more.

Side Effects

The water retention is real but mostly intracellular — meaning it makes muscles look fuller, not bloated. Some people get GI upset on high doses. Splitting the dose or taking with food fixes it. Kidney safety has been studied to death — creatine is fine for healthy kidneys. If you have known kidney disease, talk to your doctor.

Creatine for Older Men

This is where creatine quietly shines. Sarcopenia — age-related muscle loss — accelerates after 40, and aging is the single biggest driver of testosterone decline. Combining resistance training with creatine in men over 50 has produced some of the largest effect sizes in the literature for preserving lean mass and strength. Indirect, again. But meaningful.

Should You Take It?

If you lift, do any high-intensity training, or are over 40 and want to preserve muscle, yes. The cost is trivial, the safety profile is excellent, and the strength benefits are real. Don't take it expecting a testosterone jump — that's not what it does. Take it because it lets you train harder and recover faster, which over months supports a body composition that supports T.

And the standard reminder: if your testosterone is genuinely low on bloodwork, no supplement — creatine, zinc, ashwagandha, or otherwise — fixes clinical hypogonadism. See a doctor.

Quick Takeaways

Creatine doesn't meaningfully raise testosterone.
One study showed a DHT bump; replications are inconsistent.
Hair loss panic is overblown for non-predisposed men.
5 g/day of creatine monohydrate. Skip the fancy forms.
Indirect T benefit comes from training harder and preserving muscle.

Not medical advice. Talk to your doctor before starting long-term supplementation, especially if you have kidney disease.