Creatine for the Brain: Cognitive Performance and Neuroprotection

Creatine monohydrate is typically recognized as an effective supplement for improving strength and exercise performance. You can read our earlier blog on this topic. Furthermore, growing research suggests that creatine has a pivotal role in cognitive performance and neural protection. Although doses of 3 to 5 g per day are typically recommended for athletic performance, higher doses, often 15 to 20+ g daily, are necessary to move the needle in brain energy metabolism and cognitive function. It’s the biological equivalent of an uninterruptible power supply (UPS) for your skull.

Creatine and Brain Energy Metabolism

To understand how creatine may improve cognitive performance, we first need to recognize that the brain is an extremely energy-demanding organ. It consumes about 20% of the body's total energy supply, even though it comprises only about 2% of the body's mass. This is why we still need energy at rest, particularly when studying, to fuel the brain. Creatine increases ATP availability via the phosphocreatine system and rapidly regenerates ATP during periods of high metabolic demand. Supplementation with creatine increases phosphocreatine availability in brain tissue, allowing for more stable cellular energy levels during periods of stress such as sleep deprivation, intense cognitive effort (which places stress on the prefrontal cortex), or neurological injury, which, for most of us, is a reality. The improved energy buffering allows neurons to maintain function when energy demands exceed supply (McMorris et al., 2006).

Evidence for Cognitive Benefits

Clinical research supports creatine's cognitive benefits. A recent meta-analysis of 16 randomized controlled trials conducted by Xu et al. (2024) demonstrated that creatine supplementation had improved several domains of cognitive function. Participants demonstrated improvements in memory performance, attention, and retention time, and greater processing speed compared to the placebo.

The effects seem noticeable under metabolic stress, a state otherwise known as "Monday morning." Individuals who supplemented with creatine over a seven-day period experienced significantly less decline in cognitive performance following 24 hours of sleep deprivation, and participants maintained better retention time, coordination, and mood than the placebo group (McMorris et al., 2006).

Recent research has confirmed the findings using advanced brain imaging techniques. Gordji-Nejad et al. (2024) demonstrated that a single dose of creatine during sleep deprivation helped maintain normal brain ATP and phosphocreatine levels, resulting in improved walking memory and faster processing time. While we don't recommend replacing sleep with a bucket of creatine, it could be the difference between surviving Daylight Saving Time and accidentally putting your car keys in the refrigerator.

Neuroprotective Mechanisms

Now that we understand creatine as an ergogenic or cognitive performance-based supplement, we should also consider its neuroprotective effects. Hopefully, you've heard of mitochondria, often referred to as the powerhouse of the cell. Creatine supports mitochondrial function and reduces the production of reactive oxygen species (ROS), which are molecules that contribute to oxidative stress and cellular damage (Santos, Sinha, and Lindner, 2018). Since creatine helps maintain ATP availability, it reduces metabolic strain on antioxidant systems, which helps maintain glutathione levels, one of the body's primary cellular antioxidants.  

Moreover, creatine may stabilize mitochondrial membranes and delay the activation of apoptotic pathways (programmed cell death). Laboratory models of Parkinson's disease have demonstrated that creatine protects neurons from oxidative damage and preserves dopamine-producing cells (Xiao et al., 2014). Furthermore, a pilot study in patients with traumatic brain injury (TBI) showed that creatine supplementation improved recovery time and symptoms of headache, dizziness, and fatigue (Dean et al., 2017). It’s basically a security detail for your gray matter.

Why Higher Doses May Be Needed for Brain Effects

Oftentimes, studies demonstrate greater improvements in cognitive and neuroprotective mechanisms with higher doses around 20 g per day. The reason for this increased dose is likely that brain creatine levels increase more slowly than those in muscle stores. Likely because the blood-brain barrier limits the rate at which creatine enters brain tissue, therefore larger doses are needed to significantly elevate brain phosphocreatine levels.

For the reasons listed above, many cognitive studies have used protocols of 20 g per day for several days or based on weights around (around 0.3–0.35 g/kg) or (0.14–0.16 g/lb), so for myself, at 209 lbs, I would take 31 grams a day. That’s a lot of powder! But considering the alternative is "brain fog," it’s a fair trade.

Now that you have worked through this blog, go take some creatine to restore that brain ATP and read more of our great content :)

References
Dean, P. J. A., Arikan, G., Opitz, B., & Sterr, A. (2017). Potential for use of creatine supplementation following mild traumatic brain injury. Concussion, 2(2), CNC34. https://doi.org/10.2217/cnc-2016-0016

McMorris, T., Harris, R. C., Swain, J., Corbett, J., Collard, K., Dyson, R. J., Dye, L., Hodgson, C., & Draper, N. (2006a). Effect of creatine supplementation and sleep deprivation, with mild exercise, on cognitive and psychomotor performance, mood state, and plasma concentrations of catecholamines and cortisol. Psychopharmacology, 185(1), 93–103. https://doi.org/10.1007/s00213-005-0269-z

McMorris, T., Harris, R. C., Swain, J., Corbett, J., Collard, K., Dyson, R. J., Dye, L., Hodgson, C., & Draper, N. (2006b). Effect of creatine supplementation and sleep deprivation, with mild exercise, on cognitive and psychomotor performance, mood state, and plasma concentrations of catecholamines and cortisol. Psychopharmacology, 185(1), 93–103. https://doi.org/10.1007/s00213-005-0269-z

Santos, A. L., Sinha, S., & Lindner, A. B. (2018). The Good, the Bad, and the Ugly of ROS: New Insights on Aging and Aging‐Related Diseases from Eukaryotic and Prokaryotic Model Organisms. Oxidative Medicine and Cellular Longevity, 2018(1), 1941285. https://doi.org/10.1155/2018/1941285

Xiao, Y., Luo, M., Luo, H., & Wang, J. (2014). Creatine for Parkinson’s disease. Cochrane Database of Systematic Reviews, 2014(6), CD009646. https://doi.org/10.1002/14651858.cd009646.pub2

Xu, C., Bi, S., Zhang, W., & Luo, L. (2024). The effects of creatine supplementation on cognitive function in adults: a systematic review and meta-analysis. Frontiers in Nutrition, 11, 1424972. https://doi.org/10.3389/fnut.2024.1424972