Creatine
Creatine is the most-researched supplement in sports science, and the least controversial. Over 500 peer-reviewed studies confirm its safety and efficacy for physical performance. What makes it relevant to the Huberman framework is a second body of evidence — smaller but growing — suggesting that creatine serves the brain in the same way it serves muscle: as a phosphocreatine buffer that provides rapid energy during high-demand states.
Beyond Muscle: The Cognitive Case
Most people know creatine as a sports supplement. Huberman is interested in it for a different reason. The brain consumes approximately 20% of the body’s energy despite comprising only 2% of body mass. Creatine provides a ready reserve of high-energy phosphate bonds (phosphocreatine) that the brain can draw on during cognitively demanding tasks — exactly the kind of tasks that deplete mental energy and lead to brain fog.
The evidence for cognitive benefits is most robust in:
- Vegetarians and vegans: Dietary creatine comes almost exclusively from animal products. Those who do not eat meat show the largest cognitive improvements from supplementation, suggesting they are operating from a lower baseline.
- Sleep-deprived individuals: Creatine partially buffers the cognitive decline caused by sleep deprivation — not a replacement for sleep, but a measurable attenuator of the damage.
- Aging populations: Some evidence suggests creatine supplementation supports cognitive function in older adults, potentially through neuroprotective mechanisms.
The Compound
Creatine monohydrate is the only form worth taking. Despite marketing for creatine ethyl ester, creatine hydrochloride, buffered creatine, and other variants, creatine monohydrate has the largest evidence base, the lowest cost, and equivalent or superior bioavailability.
Protocol Summary
Compound: Creatine monohydrate Dosage: 3-5 grams per day (5g for individuals over 185 lbs / 84 kg) Timing: Any time of day — timing does not meaningfully affect outcomes Loading phase: Not necessary; daily dosing reaches saturation in 3-4 weeks Form: Powder mixed in water or any beverage Duration: Indefinite — chronic supplementation is well-supported by safety data Cost: Approximately $10-15/month for pharmaceutical-grade monohydrate Caution: May cause water retention (2-5 lbs) initially; does not cause kidney damage in healthy individuals at standard doses
Physical Performance Effects
| Benefit | Mechanism | Magnitude |
|---|---|---|
| Strength increase | Rapid ATP regeneration during sets | 5-10% improvement in high-intensity output |
| Muscle mass | Supports training volume, cell volumization | 2-4 lbs lean mass gain over first months |
| Power output | Phosphocreatine buffer for explosive movements | Measurable in sprint, jump, and throw tests |
| Recovery between sets | Faster phosphocreatine resynthesis | Shorter rest periods needed for same output |
What Creatine Does Not Do
Huberman and the evidence base are clear on what creatine does not do:
- It does not cause hair loss (the single study suggesting this has not been replicated)
- It does not cause kidney damage in healthy individuals
- It is not a steroid or anabolic agent
- It does not work as an acute performance enhancer (it requires weeks of loading)
Mechanisms Involved
- Neuroplasticity — Energy buffer supports sustained cognitive effort required for learning
- Dopamine — Some evidence for interaction with dopaminergic signaling, though not the primary mechanism
Related Protocols
- Exercise Optimization — Creatine supports resistance training performance
- Sleep Optimization — Creatine partially buffers cognitive effects of sleep deprivation
Source Episodes
| Episode | Key Contribution |
|---|---|
| Dr. Rhonda Patrick: Micronutrients | Cognitive benefits, dosage, safety profile |
Creatine monohydrate is one of the few supplements where the evidence matches the claims — for both body and brain.