Taking 5 grams of creatine daily for six weeks or more does not change working memory, attention, or executive function in healthy adults.
See the scientific wording
Creatine supplementation at 5 g/day for 6 weeks or longer has no significant effect on working memory, attention, or executive function in healthy adults.
Backed by science
One low-scoring study supports this claim, so treat this as an early signal rather than settled science.
What the research says
1 study reviewedSupporting (1)
Systematic Review With Meta-AnalysisMeta-analysis2024
Scientists looked at many studies where people took 5 grams of creatine daily for weeks or months and found no improvement in memory, focus, or decision-making. So, taking creatine like this doesn’t seem to help healthy adults think better.
Contradicting (0)
No contradicting studies found yet
That doesn't mean it's settled — it just means no study has tested the opposite.
Quality-weighted scoring: we follow the GRADE framework — each study is rated High, Moderate, Low, or Very Low based on study design, methodology rigor, and risk of bias. A single high-quality RCT can outweigh several weaker observational studies.
Scores reflect study quality, not just count.
Creatine enters the brain and gets converted into a molecule that helps recharge energy in brain cells. When brain cells need energy for thinking tasks, this molecule quickly provides it. But in healthy adults, brain cells already have enough energy to handle these tasks, so adding more creatine does not make thinking better.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting study
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Taking 5 grams of creatine daily for six weeks or more does not change working memory, attention, or executive function in healthy adults.
Mechanism
1 studyCreatine gets into the brain and helps recharge energy in brain cells. But in healthy adults, brain cells already have enough energy to do thinking tasks, so adding more creatine doesn't make thinking faster or sharper.
Creatine enters the brain and gets converted into a molecule that helps recharge energy in brain cells. When brain cells need energy for thinking tasks, this molecule quickly provides it. But in healthy adults, brain cells already have enough energy to handle these tasks, so adding more creatine does not make thinking better.
Creatine crosses the blood-brain barrier via specific transporter proteins
Creatine is phosphorylated to phosphocreatine in neurons by creatine kinase
Phosphocreatine donates a phosphate group to ADP to regenerate ATP during periods of high energy demand
Neuronal ATP levels remain sufficient for cognitive processes under normal conditions without supplemental creatine
Evidence from Studies
Supporting (1)
Community contributions welcome
Creatine and improvement in cognitive function: Evaluation of a health claim pursuant to article 13(5) of regulation (EC) No 1924/2006
Scientists looked at many studies where people took 5 grams of creatine daily for weeks or months and found no improvement in memory, focus, or decision-making. So, taking creatine like this doesn’t seem to help healthy adults think better.
Contradicting (0)
Community contributions welcome
Score Breakdown
No multi-axis breakdown available yet. The overall Pro / Against score above is the best signal.
- No clinical evidence is available; the score reflects mechanistic plausibility only.
What Would Prove This
Per GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this claim, ordered from strongest to weakest.
Systematic Review and Meta-Analysis of Creatine Supplementation on Cognitive Function in Healthy Adults
Population: Healthy adults aged 18-65; Intervention: 5 g/day creatine monohydrate; Comparator: Placebo; Outcomes: Standardized tests of working memory (e.g., n-back), attention (e.g., Stroop), and executive function (e.g., Trail Making Test); Duration: Minimum 6 weeks; Analysis: Pooling of effect sizes from all eligible RCTs with assessment of heterogeneity and publication bias.
Double-Blind, Placebo-Controlled Trial of 5 g/day Creatine for 8 Weeks on Cognitive Performance in Healthy Young Adults
Population: 100+ healthy adults aged 18-45; Intervention: 5 g/day creatine monohydrate; Comparator: Placebo (maltodextrin); Outcomes: Pre- and post-intervention scores on validated cognitive batteries including digit span, flanker task, and Wisconsin Card Sorting Test; Duration: 8 weeks; Design: Randomized, double-blind, parallel-group.
Prospective Cohort Study of Long-Term Creatine Supplement Use and Cognitive Performance in Healthy Adults
Population: 500+ healthy adults self-reporting creatine use; Intervention: Self-reported daily creatine intake ≥5 g/day for ≥6 weeks; Comparator: Non-users; Outcomes: Cognitive testing at baseline and 1-year follow-up; Duration: 1 year; Design: Prospective, observational, adjusting for confounders such as sleep, exercise, and diet.
Case-Control Study Comparing Cognitive Test Scores in Adults with Long-Term Creatine Use vs. Non-Users
Population: 100 cases with ≥6 weeks of daily creatine use (≥5 g/day) and 100 matched controls; Intervention: Historical exposure to creatine; Comparator: No creatine use; Outcomes: Cognitive test scores from standardized batteries; Duration: Retrospective assessment of exposure; Design: Matched on age, sex, education, and baseline cognitive status.
Cross-Sectional Survey of Creatine Use and Cognitive Performance in Healthy Adults
Population: 1000+ healthy adults surveyed at one time point; Intervention: Self-reported current or recent creatine use (≥5 g/day for ≥6 weeks); Comparator: Non-users; Outcomes: Single administration of cognitive tests; Duration: Single time point; Design: Population-based survey with cognitive assessment.