Does Creatine Raise Testosterone? What the Evidence Shows

The study most often cited for creatine and testosterone is van der Merwe et al. (2009), which examined college rugby players over 3 weeks of creatine loading. The researchers found a significant increase in DHT (dihydrotestosterone) and the DHT:testosterone ratio — but did not find a significant increase in total testosterone itself.

DHT is a more potent androgen than testosterone (5–10x at the receptor level), converted from testosterone via the enzyme 5-alpha reductase. An increase in DHT without a rise in total T could reflect upregulation of that conversion pathway — but it doesn't mean more testosterone is being produced. The study is interesting but hasn't been consistently replicated.

Multiple well-controlled trials — including Vatani et al. (2011) and Hoffman et al. (2006) — found no significant change in total testosterone or free testosterone with creatine supplementation at standard doses (3–5 g/day). A meta-analysis by Lanhers et al. (2017) covering 22 trials found no consistent testosterone effect.

The null finding is important: creatine works through different mechanisms (PCr resynthesis, cell hydration, increased training capacity) and doesn't need a testosterone effect to deliver its performance benefits. The two things are just unrelated.

Where creatine does support testosterone indirectly: improved body composition. Increased lean mass and reduced body fat percentage are both associated with higher endogenous testosterone. Creatine, by enabling higher training volume and intensity, accelerates lean mass gains when combined with resistance training. This is a real but indirect mechanism.

For men with low testosterone partly driven by excess body fat (which raises aromatase activity and converts testosterone to oestradiol), anything that improves body composition over months is positive for the hormone picture. Creatine earns its place in that stack.

The van der Merwe DHT finding is often cited as a concern for men genetically predisposed to male pattern hair loss (androgenetic alopecia). DHT is the primary driver of follicle miniaturisation in genetically susceptible men. If creatine reliably raises DHT by 15–20% (as found in that single study), it theoretically could accelerate hair loss in men carrying the relevant androgen receptor gene variant.

The honest caveat: one study in a specific population. Multiple subsequent trials have not replicated the DHT finding consistently. If you're actively losing hair and concerned, monitor — but there's insufficient evidence to tell men with normal hairlines to avoid creatine on this basis.

Creatine monohydrate at 3–5 g/day is as effective as any other form and far cheaper than creatine HCl, ethyl ester, or buffered versions. A loading phase (20 g/day for 5–7 days) saturates muscle stores faster but causes more initial water retention. For most men, 3–5 g/day for 4–6 weeks without loading achieves the same endpoint.

Dr. Nikola Topalovic, MD PhD reviews every FORM client report and is happy to discuss supplement stacks in context of bloodwork — creatine supplementation doesn't affect testosterone panels but does raise serum creatinine slightly, which matters when interpreting kidney markers.