Does Creatine Actually Work? What 3 Meta-Analyses Really Show

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Everyone has an opinion on creatine. Most of them are wrong.

In ten years as a competitive swimmer, I saw teammates load creatine, avoid it, cycle it, and argue about it constantly. Now, as a biotechnologist, I can actually read the trials. Here's what the evidence says — and what it doesn't.

What the research actually shows

A 2017 meta-analysis in the Journal of the International Society of Sports Nutrition (Lanhers et al.) examined 22 randomised controlled trials on creatine supplementation and upper-body strength. Subjects taking creatine monohydrate showed significantly greater gains in bench press 1RM compared to placebo — effect size 0.36. That's not massive, but it's consistent across populations.

A second meta-analysis by Rawson and Volek (2003, Journal of Strength and Conditioning Research) found creatine increased lean mass by an average of 2.2% and max strength by 8% over 4–12 weeks. Both effects were statistically significant across 22 studies reviewed.

The third piece of evidence most people miss: Candow et al. (2014, BioMed Research International) showed creatine's benefit isn't just in the gym. Older adults supplementing creatine showed improvements in muscle endurance and reduced markers of muscle damage — suggesting it supports recovery as much as performance.

What this means for you

Three grams per day of creatine monohydrate, taken consistently, is what the evidence supports for most people. No loading phase needed. No cycling. Just consistency. The effect accumulates over 4–8 weeks — not overnight.

Timing doesn't matter much. The research on pre vs post workout creatine is mixed. What matters is daily intake, not the clock.

The biotype angle

Creatine response varies significantly between individuals — and your biotype is part of why. Ectomorphs (fast metabolisms, lean builds) tend to be "responders" with more noticeable strength and lean mass gains. Endomorphs may see less dramatic muscle gain but still benefit from the recovery and endurance effects. Mesomorphs sit in the middle.

If you want to know your biotype and how creatine fits your specific training approach, the Biotype Guide is the starting point.

Download the free Biotype Guide — find the approach that works for your biology:
milenium.com.au → Free Biotype Guide

References:
1. Lanhers C et al. Creatine Supplementation and Upper Limb Strength Performance. Sports Med. 2017.
2. Rawson ES, Volek JS. Effects of creatine supplementation and resistance training on muscle strength. J Strength Cond Res. 2003.
3. Candow DG et al. Creatine supplementation with specific view to exercise/sports performance. BioMed Res Int. 2014.