Rodent review links creatine to better memory

Key Takeaways

• This was a systematic review of 19 rodent studies, not a human clinical trial.
• Across the included animal studies, creatine improved learning and memory in the majority of experiments.
• Intranasal creatine appeared to produce stronger brain uptake and cognitive effects than oral creatine in these preclinical models.
• The review links any cognitive benefit to energy, synaptic, anti-inflammatory, and antioxidant pathways in the brain.
• For people using creatine now, the practical takeaway is still that creatine monohydrate remains the best-studied form, while brain-health claims in humans are not yet settled.
• The paper strengthens the rationale for human trials, especially those that measure sex differences and brain-targeted delivery.

What the review found

A systematic review published in Behavioural Brain Research concludes that creatine supplementation improved learning and memory in the majority of rodent studies it examined. The review covered experimental animal research published from 2015 to 2026 and included 19 studies across healthy rodents and disease or stress models, including neurodegeneration, metabolic insult, perinatal stress, and creatine biosynthesis deficiency.

The headline result is straightforward: in these preclinical models, creatine generally helped cognition. But the paper adds important nuance. The apparent size of the benefit was moderated by route of administration, treatment duration, and sex. In particular, intranasal delivery appeared to produce better brain uptake and stronger cognitive effects than oral supplementation.

That is scientifically interesting because it points to a possible bottleneck: getting enough creatine into the brain may matter as much as total intake. Still, readers should be careful not to leap from “works in rodents” to “works in people.” This review does not prove that standard oral creatine supplementation improves memory, focus, or other cognitive outcomes in humans.

What it does do is strengthen the case that creatine deserves serious study beyond sport performance. For people already familiar with creatine for strength and training adaptation, this paper adds to a growing idea in the field: creatine may have neurological effects under some conditions, but the human evidence still needs to catch up.

How the review was done and where the evidence is stronger or weaker

This was a systematic review, not a single experiment. The authors followed PRISMA 2020 guidelines and searched Scopus, PubMed, and Web of Science for animal studies that tested creatine supplementation and measured behavioural and/or neurobiological outcomes related to cognition. They also assessed risk of bias using SYRCLE's tool, which is specifically designed for animal studies.

That design matters. Systematic reviews are useful because they try to gather all the relevant evidence instead of highlighting one favourable paper. At the same time, the strength of any review depends on the quality and consistency of the underlying studies.

In this case, the underlying literature is still quite heterogeneous. The included rodent studies differed in:

• animal models used
• health status versus disease or stress models
• route of creatine administration
• treatment duration
• behavioural tests used to assess learning and memory
• whether neurobiological mechanisms were directly measured

Those differences make it harder to pin down one clean estimate of effect size or one ideal protocol. And because these are animal data, translation is a major limitation. Rodent brains are informative for mechanism, but they are not human brains, and behavioural tests in animals are only approximations of human cognition.

So the review is best read as promising mechanistic evidence, not as a practical proof that people should take creatine for memory. If you want to understand what is already well established in humans, our creatine guides and creatine dosage calculator are better starting points than preclinical cognition headlines alone.

Why creatine might affect the brain

The review argues that creatine's cognitive effects in rodents are not explained by a single pathway. Instead, several mechanisms appear to converge.

First is brain energy metabolism. Creatine helps buffer cellular energy through the phosphocreatine system, and the review links supplementation to enhanced mitochondrial respiratory capacity. In plain language, creatine may help neurons meet high energy demands more reliably.

Second is synaptic plasticity, the brain's ability to strengthen connections involved in learning and memory. The authors report associations with increased expression of proteins such as CaMKII, PSD-95, and BDNF, with signalling through CaMKII/CREB and PI3K/AKT/mTOR pathways.

Third is lower neuroinflammation. The review describes attenuation of inflammatory signalling through NF-κB suppression and STAT1 inhibition. Fourth is reduced oxidative stress, including restoration of CK-BB, a brain-type creatine kinase linked to cellular energy handling.

Taken together, that gives a biologically plausible story: creatine may support cognition when the brain is under energetic stress, inflammatory pressure, developmental challenge, or disease burden. That is different from saying every healthy adult who uses standard oral creatine will notice sharper memory.

This distinction matters because mechanistic plausibility is not the same thing as clinical proof. Still, it helps explain why creatine remains scientifically interesting well beyond muscle. It is one reason major overviews of creatine science, such as the ISSN position stand, continue to describe creatine monohydrate as one of the most studied supplements in nutrition.

What this means in practice for people taking creatine now

For most readers, the practical message is cautious rather than revolutionary. This review does not change standard evidence-based creatine use for sport, training, or general supplementation.

If you already take creatine, the best-supported approach remains ordinary creatine monohydrate. In mainstream sports-nutrition practice, that usually means either:

• 3 to 5 g per day as a simple maintenance dose, or
• about 20 g per day split into 4 doses for 5 to 7 days, followed by a maintenance dose.

Those dosing patterns are based on muscle creatine saturation research, not on proven cognitive optimisation. This new review does not establish a specific dose, timing strategy, or product format for human brain benefits.

The most provocative finding here is that intranasal delivery outperformed oral delivery in rodent models. But that is not a cue for consumers to chase unproven products or improvised delivery methods. Intranasal creatine is not an established, standard consumer practice, and this paper itself frames brain-targeted delivery as a future research need, not a current recommendation.

For shoppers, the sensible move is still to prioritise product quality, transparency, and plain monohydrate. Our best creatine rankings, creatine brand reviews, and creatine product catalog can help you compare options without getting sidetracked by speculative brain-boosting claims.

In short: keep your expectations realistic. Use creatine for benefits that are already well supported, and treat cognition claims as promising but not yet settled.

How this fits with the broader creatine evidence

This review fits a familiar pattern in supplement science: preclinical evidence often moves faster than human trials. Animal and mechanistic studies can show that something is biologically plausible long before researchers know whether the effect is large, reliable, or noticeable in people.

Creatine is a good example. The human evidence is strongest for high-intensity exercise performance, training support, and lean mass gains, especially with creatine monohydrate. Reviews such as Antonio et al. (2021) also address common misconceptions and reinforce that monohydrate remains the reference form.

Cognition is more complicated. There is interest in whether creatine might help under conditions of sleep deprivation, aging, neurological disease, vegetarian diets, or other states where brain energy availability could matter more. But the human literature remains mixed, and effects likely depend on population, protocol, baseline status, and the outcome measured.

This new rodent review strengthens the rationale for more targeted human work. It suggests at least three priorities:

1. test delivery methods that meaningfully affect brain creatine availability
2. analyse sex differences instead of treating them as an afterthought
3. pair cognitive testing with mechanistic measures rather than relying on symptoms alone

That is useful progress. It tells researchers where the signal may be strongest. For consumers, though, it should not be mistaken for confirmation that routine oral creatine reliably improves day-to-day mental performance.

Bottom line

The new review's central finding is that creatine improved learning and memory in most rodent studies included, with effects linked to brain energy support, synaptic plasticity, lower inflammation, and less oxidative stress. That is meaningful preclinical evidence.

But the leap to humans is still the key unanswered question. The review itself acknowledges that clinical translation will require better brain-targeted delivery strategies, more rigorous mechanistic study designs, and explicit consideration of sex as a biological variable.

So what should readers do with this news?

• If you use creatine for training, there is no reason to abandon the standard monohydrate playbook.
• If you are interested in creatine for memory or brain health, treat this as encouraging early-stage evidence, not a proven consumer benefit.
• If a product starts making aggressive nootropic claims based on this paper alone, be sceptical.

The fairest summary is this: creatine's role in the brain looks increasingly plausible and biologically rich, but the clearest real-world benefits are still better documented in muscle than in mind. That may change with future human trials. For now, this review is best seen as a strong argument for better research, not as the final word.

Creatine and cognition: what this review actually showed

• 19 rodent studies included — Systematic review of experimental animal studies published from 2015 to 2026.
• 2015-2026 publication window searched — Databases searched included Scopus, PubMed, and Web of Science.
• 3-5 g/day typical human maintenance dose — Mainstream creatine monohydrate guidance for muscle saturation, not a proven cognitive dose.
• ~20 g/day common loading protocol — Usually split into 4 doses for 5-7 days before maintenance.

Frequently Asked Questions

Sources & Further Reading

• Kreider et al. (2017), ISSN Position Stand: Safety and Efficacy of Creatine — JISSN
• Antonio et al. (2021), Common questions and misconceptions about creatine supplementation — JISSN