Creatine for Vegans and Vegetarians: What the Science Says

Why Creatine Is Suddenly Everywhere

For most of its commercial life, creatine belonged to one small corner of the supplement world. Athletes and bodybuilders discovered its benefits in the early 1990s, and supplement companies built products around muscle development for that narrow audience. Speaking at an industry conference on creatine, Dr. Batzler of the German producer AlzChem Group noted that for roughly 25 years, marketing rarely looked beyond that demographic. That era is ending. Creatine is now studied in the context of healthy aging, cognition, fatigue, and, most relevantly for this article, plant based nutrition.

The reason vegans and vegetarians sit at the center of this shift is simple: creatine is found naturally only in animal derived foods, chiefly meat and fish. As Batzler explains, people who eat a plant based diet consume essentially no creatine at all, and a substantial body of research shows their body stores run measurably lower than those of omnivores. That raises a practical question worth answering carefully rather than promotionally: do vegans and vegetarians actually need creatine, what does supplementation change, and where does the evidence stop?

What Creatine Is and What It Does

Creatine is a compound the human body makes on its own, primarily in the liver and kidneys, from the amino acids glycine, arginine, and methionine. Around 90 to 95 percent of it is stored in skeletal muscle, with the rest distributed across other energy hungry tissues, including the brain.

Its job is energy logistics. In its high energy form, phosphocreatine, it acts as a rapid buffer for adenosine triphosphate, or ATP, the molecule that powers muscle contraction and cellular work. When a cell burns through ATP during an intense effort, phosphocreatine donates its phosphate to regenerate ATP almost instantly, far faster than the slower aerobic and glycolytic pathways can manage. Batzler describes phosphocreatine as a spatial energy buffer that matters not only in muscle but in brain cells and other tissues with sudden energy demands. He also cites specific figures, stating that ATP regeneration via phosphocreatine runs about 40 percent faster than through the respiratory chain and about 10 percent faster than through glycolysis. The general principle is textbook physiology, but I could not verify those exact percentages in independent literature, so treat the numbers as the speaker’s own framing rather than an established constant.

Omnivores typically take in about 1 to 2 g of creatine daily from meat and fish, on top of roughly 1 g of internal production. Someone on a fully plant based diet gets close to zero from food. Their body still synthesizes creatine, but total availability sits lower, and that difference shows up in tissue measurements.

The Creatine Gap in Plant Based Eaters

The claim that vegetarians and vegans carry lower creatine stores is one of the best supported points in this entire topic. Direct muscle biopsy evidence comes from a trial by Burke and colleagues published in Medicine and Science in Sports and Exercise, which measured total muscle creatine of about 117 mmol per kilogram in vegetarians versus about 130 in nonvegetarians, a statistically significant gap. A 2020 systematic review by Kaviani, Shaw, and Chilibeck, covering nine studies, confirmed that vegetarians show lower creatine concentrations in muscle, plasma, and red blood cells.

Perhaps the most elegant evidence is a randomized trial by Blancquaert and colleagues in the British Journal of Nutrition. Omnivorous women were switched to a vegetarian diet, and within three months their muscle total creatine had fallen by about 14.6 percent unless they received a small creatine supplement. The authors calculated that roughly 1 g of creatine monohydrate per day was enough to prevent the decline. In other words, the drop is not a quirk of who chooses vegetarianism; removing dietary creatine directly lowers the body pool.

One important nuance complicates the simple story, and an honest article has to include it. Batzler presents lower creatine levels in vegetarians as a general fact, and for muscle and blood that is accurate. The brain appears to be different. Solis and colleagues used magnetic resonance spectroscopy to compare brain creatine in vegetarians and omnivores and found essentially identical levels, despite dietary intakes of 0.03 versus 1.34 g per day. The brain seems to rely largely on its own local synthesis and guards its creatine content tightly. Later work by the same group found that a week of supplementation raised muscle creatine in vegetarians but did not change brain creatine at the dose tested. So the “creatine gap” is real, but it is primarily a muscle and blood phenomenon, not a demonstrated brain deficit.

Two caveats deserve to be stated plainly. The 2017 study was single blind and its vegetarian group was small; through correspondence with the lead author, the nonprofit site Vegan Health reported that technical problems left only two vegans and ten vegetarians in the brain measurements. And other work, using higher doses for longer, has found that brain creatine can rise. An older study cited in the 2023 BMC Medicine trial gave 20 g a day for four weeks to six volunteers and measured an average 8.7 percent increase in total brain creatine, with wide variation between people.

What Supplementation Actually Changes

For muscle, the evidence is strong and consistent. According to Batzler, supplementation increases total creatine concentrations in muscle, plasma, and red blood cells, and the independent research agrees. The 2020 systematic review found that supplementing vegetarians raised their creatine and phosphocreatine levels, often to concentrations matching or exceeding those of omnivores.

More interesting is that people starting from lower baselines tend to gain more. In Burke’s trial, vegetarians who supplemented while resistance training saw greater increases in phosphocreatine, total creatine, type II muscle fiber area, lean tissue mass, and total work performed than omnivores following the identical protocol. The review echoed this, reporting improvements in strength, muscular endurance, and Wingate mean power output among vegetarian participants. The pattern makes intuitive sense: a fuller tank helps most when the tank started emptiest.

The 2020 review by Kaviani and colleagues described vegetarians reaching creatine levels greater than omnivores after supplementing, which fits with a 2025 trial in Physiological Reports that gave 15 vegans and vegetarians 0.3 g per kg a day for seven days and saw the expected rise in muscle creatine, though the authors were candid that any effect on sprint performance remained uncertain. A 2026 triple blind trial in 20 physically active vegans, using 0.1 g per kg a day for four weeks, reported small increases in skeletal muscle mass and total body water in the creatine group.

The International Society of Sports Nutrition, in its position stand authored by Kreider and colleagues, concludes that creatine monohydrate is the most effective nutritional supplement available for increasing high intensity exercise capacity and lean body mass during training. Regulators have been more conservative but still supportive. The European Food Safety Authority assessed the evidence in 2011 and authorized the claim that creatine increases physical performance in successive bursts of short duration, high intensity exercise, at a daily intake of 3 g. Batzler mentions this claim in his talk. He does not mention that a second EU claim was later approved, covering creatine combined with resistance training for muscle strength in adults over 55, while eleven other proposed claims, including improved mental attentiveness, were rejected for insufficient evidence. That regulatory scorecard is a useful reality check: the exercise performance effect is established; many of the broader claims are not, at least not yet to a regulator’s standard.

How Much to Take, and Whether Loading Matters

Batzler recommends 3 to 5 g per day and states that no loading dose is required, which matches the mainstream scientific position. Older protocols used a loading week of around 20 g per day to saturate muscle quickly, and that works, but the ISSN notes that a steady 3 to 5 g daily reaches the same saturation point over roughly four weeks. For anyone not facing a competition deadline, the simple daily dose is enough. People with lower starting stores, including vegans and vegetarians, may simply notice the benefits somewhat sooner or more strongly.

He also states that creatine does not accumulate in the body because it is excreted through urine. That is broadly right but worth phrasing precisely: muscle stores do rise with supplementation and then plateau at a saturation ceiling, and surplus creatine is converted to creatinine and passed out in urine. On safety, the evidence base is unusually deep for a supplement. The ISSN position stand reports that studies using up to 30 g per day for as long as five years found supplementation safe and well tolerated in healthy people and in a range of patient populations. Creatine monohydrate is synthesized rather than animal derived, so standard creatine monohydrate powder is itself suitable for vegans, though anyone buying capsules should check that the shell is not gelatin.

The consistently reported side effect is weight gain from water held inside muscle. Vegans with a lower starting point may notice this more: the 2026 vegan trial recorded a 1.4 kg rise in total body water over four weeks.

Creatine and the Brain: Promising, Not Proven

The most commercially exciting territory for creatine right now is cognition, and it is also where honesty matters most. Batzler lists improved cognition, protection of the central nervous system, reduced fatigue, and even a reduced need for sleep among creatine’s benefits. The research supports some of this, partially, and not all of it.

On memory and reasoning, a 2018 systematic review of randomized controlled trials by Avgerinos and colleagues concluded that creatine may improve short term memory and intelligence or reasoning in healthy people, while effects on other cognitive domains remain unclear. Notably for this article, the review found vegetarians responded better than meat eaters on memory tasks. A 2024 meta analysis in Frontiers in Nutrition pooled the trials and found a statistically significant improvement in memory, though the effect size was modest. Individual studies fill in the picture: Benton and Donohoe gave 128 young women creatine or placebo and found memory improvements in the vegetarians but no effect on verbal fluency or vigilance, and the well known trial by Rae and colleagues found working memory and abstract reasoning gains in young vegetarian adults.

Here’s what the trial can’t tell you, though. There was no omnivore group. The design never compared vegetarians with anyone else. The claim that vegetarians benefit more than meat eaters was added by readers, and later by marketers, not by the data.

The 2011 trial by Benton and Donohoe did include both groups. Two details usually go missing. First, 20 g a day for five days is a loading dose, about four times what people take long term, and the trial says nothing about months of 3 or 5 g. Second, when the dietitian Jack Norris went through the numbers, he noted that word recall actually fell in the placebo groups and in the omnivores on creatine, while the vegetarians on creatine held roughly steady against their baseline. A difference produced partly by other groups getting worse is a weaker finding than a difference produced by one group getting better, and the authors themselves acknowledged possible explanations like harder word lists or waning interest, even if they judged them unlikely.

If you read one paper on this topic, make it the 2023 randomized trial in BMC Medicine by Sandkühler and colleagues. It was preregistered, meaning the analysis plan was published before any data came in, which closes the door on picking the most flattering result afterward. It used the same two tests as Rae, the same 5 g a day for six weeks, the same crossover structure, and 123 participants, roughly half vegetarian and half omnivore. It added eight exploratory cognitive tests covering attention, verbal fluency, task switching and memory.

The results were modest. On the backward digit span, creatine bordered on significance with a p value of 0.064 and a partial eta squared of 0.029, which is a small effect size. On the Raven’s matrices the p value was 0.327 with an even smaller effect. None of the eight exploratory tests showed any benefit. And the finding that matters most for this article: vegetarians did not benefit more than omnivores, so the authors merged the two groups for the main analysis. The Bayesian analysis they ran alongside the conventional one supported a small positive effect overall, and their conclusion was that creatine might have a small beneficial effect and larger studies are needed to confirm or rule it out.

One more inconvenient number. Side effects were reported more than four times as often on creatine as on placebo, a relative risk of 4.25, mostly mild digestive complaints.

My reading is that the true effect of daily creatine on working memory in young, healthy people is probably small, possibly zero, and the 2003 result was most likely an overestimate of the kind you often see in the first small trial of anything. The diet interaction that the whole vegan creatine story rests on simply didn’t show up when someone looked for it properly.

Pooling studies can rescue a small effect from noise, so it’s worth asking what the reviews found. A 2023 meta analysis of eight randomized trials in Nutrition Reviews reported that creatine improved measures of memory in healthy people, but the effect was driven almost entirely by older adults aged 66 to 76, with a standardized mean difference of 0.88, while participants aged 11 to 31 showed essentially nothing, a standardized mean difference of 0.03. Dose, which ranged from about 2.2 to 20 g a day, duration from five days to 24 weeks, and sex made no difference. The vegetarian finding it mentions comes from the Benton and Donohoe study alone, not from any pooled analysis.

A 2024 meta analysis in Frontiers in Nutrition by Xu and colleagues pooled 16 randomized trials with 492 participants aged roughly 21 to 76, mixing healthy people with clinical groups. It reported a small effect on memory, a standardized mean difference of 0.31, along with improvements in attention time and processing speed, but no effect on overall cognitive function or executive function. The subgroups that benefited most were people with medical conditions, adults aged 18 to 60, and women. There was no vegetarian subgroup. The paper carried a corrigendum in February 2025, and the authors rated the certainty of the evidence low to moderate, a candid admission that the underlying trials are small and uneven.

At the same time, a 2024 systematic review in Behavioural Brain Research concluded that the overall cognitive evidence is equivocal, noting that brain creatine rises only modestly with supplementation and that many trials are small. So the fair summary is this: creatine for cognition is promising, with the clearest signals in memory, in older adults, in people under physiological stress, and possibly in vegetarians, but it is not an established effect the way the muscle performance benefit is. Remember too that vegetarians do not appear to have depleted brain creatine in the first place, which may explain why cognitive findings are less consistent than muscle findings.

The sleep and fatigue claims deserve their own scrutiny. A striking 2024 study by Gordji-Nejad and colleagues in Scientific Reports gave participants a single large dose of creatine, 0.35 g per kilogram of body weight, during 21 hours of sleep deprivation. Brain scans showed better preserved high energy phosphate levels, and participants performed better on processing speed and memory tasks than those on placebo. A 2025 follow up found similar cognitive protection at a lower dose of 0.2 g per kilogram. This is genuinely interesting evidence that creatine can buffer some of the cognitive cost of a sleepless night. It is not evidence that creatine reduces the need for sleep, as the phrasing in Batzler’s talk suggests, and no study supports using it as a sleep replacement. On mood, the evidence remains preliminary.

The Regulator That Said No

In November 2024 the European Food Safety Authority published its scientific opinion on a creatine and cognitive function health claim. The application came from Alzchem, a leading creatine manufacturer, and proposed that 3 g a day contributes to cognitive function. The panel examined 21 human intervention studies plus two more found later. It noted that acute effects on working memory appeared at 20 g a day but not at lower doses and not with 5 g a day for six weeks, that only one of ten studies in healthy people showed any effect on a single domain, and that trials in clinical populations didn’t help either. Its conclusion was that a cause and effect relationship had not been established, and the European Commission has since proposed a regulation formally refusing the claim.

Two things about that ruling matter for a US reader. First, it doesn’t bind American products. In the United States, supplements are regulated under the Dietary Supplement Health and Education Act of 1994, which lets a company make a structure or function claim such as “supports cognitive function” without any agency review, provided it holds substantiation that the statement is truthful and prints the familiar disclaimer that the FDA hasn’t evaluated it. So you will keep seeing brain claims on creatine labels in the US regardless of what EFSA decided. Second, the ruling is still the most thorough independent read of this literature that exists.

A 2025 perspective piece in the Journal of Nutrition by Eckert made the same argument from the academic side: public and commercial enthusiasm for creatine as a cognitive enhancer has raced ahead of an evidence base that remains limited, and the amplification of small, early findings is distorting how consumers judge the product.

Creatine and Healthy Aging

Batzler argues that creatine can help people live better as they age, framing the goal as bending the aging curve to extend healthy lifespan. Strip away the marketing language and there is solid science underneath, with one crucial condition attached: the strongest aging evidence involves creatine combined with resistance training, not creatine alone.

Muscle mass and strength decline with age, a process that can progress to sarcopenia, with real consequences for independence and fall risk. A meta analysis by Chilibeck and colleagues covering 22 randomized trials and 721 older participants found that adding creatine to a resistance training program produced about 1.37 kg more lean tissue mass and greater upper and lower body strength than training with placebo. A 2021 meta analysis in Nutrients and subsequent reviews broadly confirm the effect, while noting the gains are small to moderate and that dosing strategy may matter. This body of evidence is what persuaded EFSA to approve the over 55 claim, which specifies at least 3 g daily alongside resistance training performed at least three times a week at moderate intensity.

For older vegetarians and vegans, the logic compounds: they enter later life with lower muscle creatine stores and stand to gain the most from restoring them, but the training component is not optional if the goal is stronger muscles. Beyond muscle, Batzler mentions emerging areas including glucose management, heart metabolism, immune cell activity, and skin health. These are best described as early stage research. Creatine’s role in immune cell energy metabolism is mechanistically plausible and under active study, but human outcome trials are lacking. For skin, small studies of topical creatine formulations have reported increased collagen synthesis and reduced wrinkle measures, and a 2025 review in the Journal of Clinical and Aesthetic Dermatology found the clinical evidence limited, often industry linked, and in need of independent replication. None of these areas justifies health claims today, and Batzler himself notes that several such claims remain only in the regulatory pipeline.

Creatine in Food: The Functional Food Frontier

The most distinctive part of Batzler’s presentation concerns where creatine will live on the shelf. His prediction is that creatine will move beyond tubs of powder into everyday foods, especially foods aimed at vegetarians and vegans, and that shoppers will see creatine enriched products in grocery stores in the near future. He describes adding creatine to yogurt, cereals, muesli, bars, confectionery, baked goods, and, most pointedly, plant based burger patties, where a vegetable protein matrix is built with texturizers, spices, and flavor and then enriched with creatine to bring its nutritional profile closer to meat.

He supports this with stability data from his company’s laboratories: in yogurt, creatine content held up through fermentation, heating, and days of storage with only around a ten percent loss, and in burger patties, high creatine content survived a two step cooking process of pre frying followed by steam oven cooking. These findings are plausible, but they are internal company studies presented at a conference, and I found no independent peer reviewed replication, so they should be read as a manufacturer’s data rather than settled food science.

The sustainability argument he attaches to this trend does check out at the headline level. Batzler states that the food system is responsible for up to 35 percent of global emissions, with animal products contributing up to 15 percent. The landmark analysis by Crippa and colleagues in Nature Food estimated that food systems generated 34 percent of global anthropogenic greenhouse gas emissions in 2015, with a plausible range of 25 to 42 percent, which matches his figure. The connective logic is straightforward: if more people shift toward plant based eating for climate reasons, more people will have near zero dietary creatine intake, and fortified foods or supplements become the practical way to close the gap. It is worth being transparent that this is also a commercial thesis. Batzler represents AlzChem, which trade press confirms is the only creatine monohydrate producer outside China, manufacturing its Creapure brand in Trostberg, Germany, and which announced an expansion of its creatine capacity scheduled to come online in 2022 precisely because of this anticipated demand. The market interest does not make the underlying science wrong, but readers should know the vantage point.

Who The Findings Apply To, And Who They Don’t

Vegan athletes and anyone training hard. The evidence for muscle creatine, strength and lean mass in vegetarians and vegans is as good as it is for anyone, and the lower starting point means the response is often larger.

Vegans hoping to think more clearly. The one daily dose trial in vegetarians alone is Rae 2003, and its diet interaction wasn’t replicated in the larger 2023 trial. Trying it is reasonable and cheap, but the data support expecting a small effect on working memory at most, not a noticeably sharper mind.

Older vegans. The clearest memory signal in the pooled data is in people aged 66 to 76, and that isn’t a vegan specific finding. If you’re in that age range and vegan, both lines of evidence point mildly in the same direction, though no trial has recruited older vegans specifically.

Anyone who’s badly sleep deprived. A 2023 review of creatine and brain function by Candow and colleagues describes the most consistent cognitive effects appearing during metabolic stress such as sleep deprivation, but those studies mostly used single very large doses or short loading protocols. They tell you nothing about 3 g a day in a well rested person, vegan or otherwise.

Women. The 2024 meta analysis found more benefit in women, and the Benton study was entirely women. Whether that’s biology or the makeup of the trials is unknown.

What Remains Unknown

The honest gaps are large. No cognition trial has recruited vegans specifically. Every “vegetarian” cognition study mixes lacto ovo vegetarians, who still eat eggs and dairy, with a handful of vegans, and the biopsy and scanning studies had two or three vegans each. Whether a strict vegan diet held for years produces something different in the brain from a vegetarian diet is simply unmeasured.

No trial has measured brain creatine and cognition in the same vegan participants at the same time, which is the experiment that would actually test the story. The dose and duration needed to raise brain creatine reliably are also unsettled: a week of loading did nothing in the 2017 São Paulo study, four weeks of 20 g a day did something in a study of six people, and nobody has mapped what happens in between at the 3 to 5 g doses people take.

And there is no trial of daily creatine in vegetarians for cognition lasting longer than six weeks. If a benefit takes months to appear, none of the existing studies would have caught it.

The Bottom Line for Plant Based Eaters

Pulling the verified evidence together: vegans and vegetarians reliably carry lower creatine stores in muscle and blood than omnivores, because food creatine comes only from animal products and internal synthesis does not fully compensate. Supplementing 3 to 5 g of creatine monohydrate daily restores those stores, is exceptionally well studied for safety, and produces meaningful gains in high intensity exercise performance, strength, and lean mass, with vegetarians often responding more strongly than meat eaters. For older adults, creatine amplifies the benefits of resistance training on muscle and strength, an effect solid enough to earn EU regulatory approval.

The brain story is more tentative. Vegetarians do not appear to have depleted brain creatine, and while trials suggest possible memory and reasoning benefits, especially under stress or sleep deprivation, the cognitive evidence remains mixed and the effects modest. Claims about immunity, skin, glucose, heart health, or reduced sleep need run well ahead of the data. Creatine is not a requirement for health on a plant based diet; the body’s own production prevents outright deficiency. It is better understood as a low cost, low risk way for plant based eaters to reclaim a performance and possibly cognitive resource that their diet, for good ethical and environmental reasons, leaves off the plate.