The Claim

Creatine supplementation improves brain energy metabolism, which enhances cognitive function and reduces mental fatigue.

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
90score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

How it works
3 studies reviewed
In plain English

Creatine supplementation increases brain energy metabolism, leading to improved cognitive performance and decreased mental fatigue.

See the scientific wording

Creatine supplementation improves brain energy metabolism, enhancing cognitive function and reducing mental fatigue

Why this might work

Creatine enters the brain and is converted into a high-energy storage molecule that quickly replenishes the brain's main energy currency. When the brain works hard, like during focus or quick thinking, this stored energy is used to keep neurons firing fast and efficiently, making mental tasks easier and less tiring.

Verified mechanismbased on 4 studies

What the research says

3 studies

  1. Study: The effects of creatine supplementation on cognitive performance—a randomised controlled study

    Taking creatine might help people remember a few more numbers in a short memory test, but it doesn't make them smarter overall. The effect is tiny and not certain, but it's not making things worse either.

  2. Study: Effects of Creatine Monohydrate Loading on Sleep Metrics, Physical Performance, Cognitive Function, and Recovery in Physically Active Men: A Randomized, Double-Blind, Placebo-Controlled, Crossover Trial

    This study found that people who took creatine for a week did better on a mental test that measures focus and attention, without sleeping more or feeling less tired overall. This suggests creatine may help the brain work better.

  3. Study: Effects of 6 weeks of high-dose creatine monohydrate supplementation with or without guanidinoacetic acid on cognitive function

    Taking creatine, especially with another chemical called GAA, helped people think faster and make fewer mistakes on attention tasks, meaning their brains worked more efficiently and got less tired. It didn't help them remember things better, but it did help them react quicker and stay focused.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 3 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.