Overview
This series examines whether creatine monohydrate changes measured cognitive performance in adults—not whether it makes everyone think better. It moves from the phosphocreatine–ATP energy hypothesis to the 2024 systematic review and meta-analysis, separating memory and selected attention-time and processing-speed-time signals from null or uncertain results in overall cognition, executive function, and score-based outcomes. It then tests the synthesis’s statistical foundation: a 2026 commentary argues that correlated outcomes from the same participants may have been treated as independent, potentially overstating precision; no corrected estimate is supplied. Reported subgroup patterns and the gap between laboratory tasks and everyday function further limit generalization. The evidence supports a plausible, endpoint-specific and conditional possibility in some adults, not a universal enhancer, treatment, prevention strategy, optimal regimen, or proven real-world benefit.
Learning outcomes
- Creatine monohydrate has a plausible brain-energy rationale, but a mechanism does not establish cognitive benefit.
- The 2024 review reported positive memory and selected time-based results, alongside null or uncertain broader and score-based outcomes.
- A 2026 commentary argues that correlated outcomes may have inflated the precision of the reported memory estimate; no corrected result is provided.
- Current evidence supports only a conditional, endpoint-specific claim in some adults, not universal enhancement, treatment, prevention, or better everyday functioning.
Keywords
Preview every chapter · Unlock full text, audio, and video from chapter 4
PlansFAQ
Does creatine monohydrate improve cognition in adults?
The evidence does not establish a general improvement in cognition; a 2024 review reported positive memory and selected time-based findings, but several domains were null or uncertain.
What did the 2024 meta-analysis find for memory and processing speed?
It reported a positive memory estimate and faster processing-speed task completion, but not a significant improvement in processing-speed scores; the memory estimate’s precision is contested.
Why is the creatine memory evidence contested?
It is contested because a 2026 commentary argues that multiple correlated outcomes from the same participants may have been treated as independent, making uncertainty look smaller; no corrected estimate is supplied.
Can creatine’s cognitive test results be applied to everyday performance?
Not on current evidence: the studies measured selected neuropsychological tasks, not productivity, academic achievement, decision quality, independence, or quality of life.