Creatine Isn't Just for Muscles
A supplement associated almost entirely with gym bags is now in Alzheimer's trials — and early results are surprising researchers.
Creatine helps regenerate ATP, the cell's core energy currency, in tissue that demands rapid energy — historically studied almost exclusively in muscle. Brain tissue also relies heavily on ATP, but creatine transport into the brain is much slower than into muscle, meaning brain-relevant effects likely require different dosing logic than the bodybuilding literature assumes.
Key Findings
- A pilot trial found 20g/day for 8 weeks improved cognition in Alzheimer's patients
- Brain phosphocreatine levels measurably increased alongside cognitive gains
- Separate trials tested lower, brain-targeted doses (750mg-1500mg/day) in other populations
- 20g/day is far above typical bodybuilding maintenance doses (3-5g/day)
The Alzheimer's pilot trial
A single-arm pilot trial testing 20g/day creatine monohydrate for 8 weeks in Alzheimer's patients found improved cognition on several standardized cognitive tests, alongside measurably increased brain phosphocreatine levels.1
Other populations, other doses
Separate 2025-2026 trials in perimenopausal and menopausal women tested lower brain-targeted doses (750mg-1500mg/day). A broader systematic review and meta-analysis found a more modest cognitive benefit across general adult populations.2
Why the dose gap matters
The dose that mattered in the Alzheimer's pilot, 20g/day, is far above typical bodybuilding maintenance doses of 3-5g/day. This is early-stage, population-specific research, not evidence that a standard gym-shelf creatine dose delivers a brain benefit.
The practical takeaway
- A standard 3-5g/day creatine dose is not the dose tested for cognitive benefit
- This research is early-stage and population-specific (Alzheimer's patients), not a general recommendation
- Talk to a doctor before using higher doses for a cognitive health goal
Sources
- "Creatine monohydrate pilot in Alzheimer's: Feasibility, brain creatine, and cognition." Alzheimer's & Dementia: Translational Research & Clinical Interventions, 2025. alz-journals.onlinelibrary.wiley.com
- "The effects of creatine supplementation on cognitive function in adults: a systematic review and meta-analysis." PubMed. pubmed.ncbi.nlm.nih.gov
