🧠 Creatine isn't just for the gym

1,800 people tested. The brain benefits are bigger than the muscle gains.

March 29, 2026

I've marked some harder terms with an asterisk (*). If you're not familiar, I explain them at the bottom.

Creatine monohydrate is known as a muscle supplement. You've probably seen it in every gym. But there's a 2024 meta-analysis covering 1,800 people that changes the conversation entirely.

Working memory improved by 18%.
Processing speed got 12% faster.
Brain creatine levels increased 8-10%.

Your brain uses 20% of your body's energy despite being 2% of your body weight. When you're under cognitive stress, sleep-deprived, or mentally fatigued, your brain burns through *ATP faster than it can regenerate it. Creatine fixes that.

It works through the *phosphocreatine system. Creatine regenerates ATP 40x faster than normal *oxidative phosphorylation. That means your brain has more fuel available when you need it most.

A 2024 study in Scientific Reports tested a single 25g dose during sleep deprivation. Cognitive performance stayed sharp. Processing speed held. The control group crashed.

But here's where it gets interesting…

Vegetarians saw 24% working memory improvement compared to 12% in meat-eaters. Lower baseline stores mean bigger response. One 2003 Australian study found vegetarians improved from recalling 7 digits to 8.5 digits after six weeks of 5g daily.

The dosing:

5g daily is the standard. No loading phase needed for cognitive benefits. Effects show up in 4-6 weeks.

For acute situations like exams or intensive work sprints, 0.35g per kg body weight (about 25g for a 70kg person) works in 3 hours, peaks at 4 hours, lasts 9 hours.

I've been taking 5g of creatine for muscle growth and recovery for a while now. But when I found out about the cognitive research, I got genuinely excited. I'm upping my dose to 10g to see what happens.

I currently buy this one from amazon:
BulkSupplements.com Creatine Monohydrate Powder

If you want to go deeper on the brain side of this, watch this on youtube (17min long):
Creatine: Dose, Benefits & Safety | Dr. Rhonda Patrick & Dr. Andrew Huberman

Terms

* ATP (Adenosine Triphosphate):
Your brain's battery. Every time a neuron fires, every time you form a thought or hold something in working memory, it costs ATP. Your brain makes it constantly, but under stress it runs low faster than it can recharge.

* Phosphocreatine (PCr):
The backup battery. It sits in your brain tissue waiting. When ATP drops, phosphocreatine instantly donates a molecule to regenerate it. Creatine supplementation increases how much phosphocreatine you have stored.

* Oxidative phosphorylation:
The normal way your brain makes ATP. It uses oxygen and glucose and takes time. It's efficient but slow. When you're sleep-deprived or mentally fatigued and need ATP fast, this process can't keep up. That's why the phosphocreatine backup system matters.

Free resource:

I put together a simple doc with seven supplements I actually use, all backed by research with sources you can check yourself. Creatine’s in there too.

Disclaimer: This is educational content based on research and personal exploration. I’m not a doctor, and this isn’t medical advice. Always consult a qualified professional before making decisions about your health or supplements.

Thank you for reading! I hope you learned something useful. See you next week.

—Ernest P.
Founder, Enhancing Brain