The Claim
Bayesian analysis of cognitive test data from a large randomized controlled trial indicates weak to moderate evidence for a small benefit of creatine supplementation on backward digit span performance and strong evidence against the large effect size previously reported by Rae et al. (2003), suggesting that prior claims of creatine's cognitive benefits were overestimated.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
A large, well-conducted study found that creatine has only a small and uncertain effect on backward digit span performance, and the previously reported large benefit was not supported by the data.
See the scientific wording
Bayesian analysis of cognitive test data from a large RCT provides only weak to moderate evidence for a small benefit of creatine on backward digit span, and strong evidence against the large effect size previously reported by Rae et al. (2003), suggesting prior claims of creatine’s cognitive benefits may have been overestimated.
Creatine enters the brain and gets converted into a high-energy molecule that quickly replenishes the brain's fuel supply when neurons are working hard, such as when remembering sequences of numbers. This extra fuel helps neurons fire more steadily, which may slightly improve performance on demanding memory tasks.
What the research says
1 studyStudy: The effects of creatine supplementation on cognitive performance—a randomised controlled study
This study found that taking creatine might help people remember a tiny bit more numbers in a memory test, but the improvement is so small it could just be luck. It also shows that earlier claims of big brain boosts from creatine were probably too optimistic.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.