What did Roschel et al. 2021 conclude about creatine and brain health?

Roschel et al. (2021) published a comprehensive review supporting creatine's multifaceted role in brain health, including cognitive function enhancement, neuroprotective effects, and potential mental health applications. They highlighted that creatine deficiency syndromes demonstrate the critical importance of creatine for normal brain function.

Can creatine protect the brain from injury?

Roschel et al. reviewed evidence suggesting that creatine supplementation may offer neuroprotective benefits, particularly following traumatic brain injury. Pre-loading with creatine before potential injury appears to be most effective, though more human trials are needed.

Does creatine help with depression and mental health?

The Roschel 2021 review discussed emerging evidence that creatine may have applications in mental health, particularly depression. Brain creatine levels appear to be altered in individuals with depressive disorders, and preliminary trials suggest creatine may augment antidepressant treatment.

What are creatine deficiency syndromes?

Creatine deficiency syndromes are rare genetic disorders that impair the body's ability to synthesize or transport creatine. They cause severe neurological symptoms including intellectual disability and seizures, demonstrating how essential creatine is for normal brain function.

Roschel et al. 2021: Comprehensive Review of Creatine Supplementation and Brain Health

TL;DR — Roschel et al. 2021

In 2021, Roschel, Gualano, Ostojic, and Rawson published a comprehensive review in Nutrients examining the relationship between creatine supplementation and brain health. The review synthesized evidence across three major domains: cognitive function, neuroprotection, and mental health (H et al., 2021) . Their conclusions were clear — creatine plays a critical role in brain energy metabolism, and supplementation has the potential to benefit cognitive function, protect against neurological damage, and support mental health. The review also highlighted creatine deficiency syndromes as definitive proof of creatine’s importance for the brain.

major domains of brain benefit reviewed: cognition, neuroprotection, and mental health

Roschel et al., Nutrients, 2021

Study Background and Rationale

While creatine research had long focused on skeletal muscle, a growing body of evidence pointed to its importance in the brain. The brain uses approximately 20% of the body’s total energy, and the phosphocreatine system plays a vital role in maintaining neuronal ATP levels during periods of high metabolic demand.

By 2021, systematic reviews like Avgerinos et al. (2018) had established cognitive benefits (KI et al., 2018) , and reviews like Dolan et al. (2019) had explored the neuroprotective angle (E et al., 2019) . However, no single publication had comprehensively integrated all the evidence across cognitive, neuroprotective, and mental health domains.

Roschel and his co-authors — all leading creatine researchers — aimed to provide this comprehensive synthesis, published in the open-access journal Nutrients.

Key Findings

1. Cognitive Function

The review confirmed that creatine supplementation can enhance cognitive performance, particularly:

Short-term memory: Multiple RCTs showed improvements in recall and working memory tasks
Reasoning and intelligence: Evidence for enhanced performance on complex cognitive tasks
Effect modifiers: Greater benefits in individuals who are sleep-deprived, elderly, vegetarian, or under acute stress

The authors noted that the brain’s creatine content is influenced by both endogenous synthesis and dietary intake, meaning supplementation can meaningfully increase brain creatine stores — particularly in populations with lower baseline levels.

~20%

of the body's total energy is consumed by the brain

Roschel et al., 2021

2. Neuroprotection

The review examined creatine’s potential to protect the brain from damage:

Traumatic brain injury (TBI): Animal studies showed that creatine pre-loading reduced cortical damage by up to 50% following experimental TBI (PG et al., 2000)
Mitochondrial protection: Creatine appears to stabilize mitochondrial function during metabolic stress, preventing the energy crisis that leads to neuronal death
Ischemic protection: Evidence suggests creatine may buffer against damage from reduced blood flow to the brain
Neurodegenerative diseases: Preliminary evidence in Parkinson’s and Huntington’s disease models, though clinical results have been mixed

3. Mental Health

An emerging area of creatine research reviewed by the authors:

Depression: Brain creatine levels are often altered in individuals with depressive disorders, and supplementation may augment antidepressant treatment
Bipolar disorder: Preliminary trials suggest creatine may help with depressive episodes in bipolar II disorder
PTSD and anxiety: Early-stage research indicates potential benefits, though more evidence is needed
Mechanism: The brain’s energy metabolism is increasingly recognized as a factor in mood disorders, and creatine’s role in energy buffering may explain its mental health effects

4. Creatine Deficiency Syndromes

The review devoted significant attention to creatine deficiency syndromes — rare genetic disorders that impair creatine synthesis (AGAT or GAMT deficiency) or transport (SLC6A8 deficiency):

These conditions cause severe neurological symptoms: intellectual disability, seizures, movement disorders, and speech delays
Creatine supplementation can dramatically improve outcomes in AGAT and GAMT deficiency when started early
SLC6A8 deficiency is harder to treat because creatine cannot cross the blood-brain barrier via the defective transporter
These syndromes provide compelling “proof of concept” that creatine is essential for normal brain function

Why This Review Matters

It unified the field. By bringing together cognitive, neuroprotective, and mental health evidence in one publication, Roschel et al. created a comprehensive reference for researchers and clinicians interested in creatine and the brain.

It shifted the narrative. Creatine has traditionally been viewed as a “gym supplement.” This review helped reposition creatine as a nutrient with broad implications for brain health — relevant to neurologists, psychiatrists, and geriatricians, not just sports scientists.

It highlighted the importance of brain creatine. The inclusion of creatine deficiency syndromes provided definitive evidence that creatine is not merely beneficial for the brain — it is essential.

It identified research gaps. The authors clearly articulated what is known and what remains unknown, guiding future research priorities. Key gaps include the need for larger cognitive trials, more human TBI studies, and clinical trials in mental health populations.

Malaysian Context

The Roschel 2021 review has several implications for Malaysians:

Brain health across the lifespan: Malaysia’s aging population makes cognitive health increasingly important. Creatine supplementation may be a simple, affordable strategy to support brain function in older Malaysians. Creatine is widely available from Malaysian retailers on Shopee and Lazada for under RM 100 per month.

Student performance: Malaysian students facing intense academic pressure may benefit from creatine’s cognitive effects, particularly during exam periods when sleep deprivation is common.

Contact sports: Athletes in popular Malaysian sports like silat, rugby, and football face concussion risks. The neuroprotective evidence, while primarily from animal studies, suggests potential for creatine pre-loading as a protective strategy.

Mental health awareness: Malaysia has increasing awareness of mental health issues. The preliminary evidence for creatine in depression and mood disorders may be of interest to Malaysian healthcare providers exploring complementary approaches.

Limitations

Narrative review format: Unlike a systematic review with predefined search criteria, this was a narrative review, which is more susceptible to selection bias in study inclusion
Cognitive evidence still developing: While promising, the total number of cognitive RCTs remains relatively small
Neuroprotection evidence primarily from animal models: Human TBI trials are limited in both number and quality
Mental health evidence is preliminary: The depression and PTSD findings come from small trials that need replication
Brain creatine measurement challenges: Measuring brain creatine levels in vivo requires MRS (magnetic resonance spectroscopy), limiting the scope of available data

Practical Implications

Think beyond the gym: Creatine has scientifically supported benefits for brain health across multiple domains
Consider creatine for cognitive support: Particularly if you are aging, vegetarian, or frequently sleep-deprived
Standard dosing applies: 3-5 g/day of creatine monohydrate is sufficient for brain benefits based on available evidence
Pre-loading may matter for neuroprotection: The TBI evidence suggests that having elevated creatine levels before injury provides the greatest protection
Watch this space: Brain-focused creatine research is expanding rapidly — expect more definitive evidence in the coming years

Full Citation

Roschel H, Gualano B, Ostojic SM, Rawson ES. Creatine supplementation and brain health. Nutrients. 2021;13(2):586. doi:10.3390/nu13020586

Sources & References

This article is based on the comprehensive review published in Nutrients (2021) and contextualized with findings from Avgerinos et al. (2018), Dolan et al. (2019), Sullivan et al. (2000), and Kreider et al. (2017). All citations link to PubMed-indexed publications.