Creatine
Does Creatine Help You Live Longer?
Creatine has not been shown to extend human lifespan. Trials show a small added strength gain in older adults who also do resistance training.
Creatine spent decades as the powder in the back of the gym locker. Now it shows up in conversations about aging well, which is quite a career change for a supplement. That brings Humanic Blue to the obvious question: does creatine help you live longer? Nobody has run the human trial that could answer that, and no study shows it does.
What researchers have tested is muscle. When older adults add creatine to strength training, reviews of the trials find a small extra gain in strength; the evidence for extra muscle is weaker. That matters for living longer and better, because strength helps people lift, climb, carry and stay independent. It’s still a healthspan result, not a lifespan one. Most studies use plain creatine monohydrate. The NIH Office of Dietary Supplements describes general tolerability in healthy adults, while the National Center for Complementary and Integrative Health advises people at risk of kidney problems to check with a clinician first.
Key Takeaways
- No randomized human trial has established that creatine extends lifespan.
- Reviews of randomized trials find that creatine plus resistance training produces a small additional strength gain in older adults. Gains in lean mass—body tissue other than fat, including muscle and water—rest on lower-quality evidence.
- Creatine monohydrate is the form most trials have used; water-weight gain and a small rise in blood creatinine can complicate interpretation.
- In the studies reviewed so far, creatine raised a common kidney blood marker without a measurable drop in kidney filtration, but long-term data are thin. This describes short- to medium-term evidence.
What does creatine do during a hard effort?
Creatine is stored mainly in the muscles used for movement, both on its own and as phosphocreatine, a form that helps replenish energy quickly. During a hard effort, such as a set of squats, a sprint or hauling a suitcase up the stairs, phosphocreatine helps regenerate ATP, the molecule cells use for immediate energy.
The US National Institutes of Health Office of Dietary Supplements (ODS) says in its exercise-supplement fact sheet that supplementation can raise muscle creatine stores and improve strength, power and work during repeated all-out efforts. The same review finds little value for endurance activities such as distance running or swimming.
That’s why creatine and resistance training are usually studied together. Creatine isn’t a replacement for the training. It may let someone do slightly more high-quality work between rests, while the training gives muscle a reason to adapt.
Most of the aging evidence is muscle evidence
Four reviews from the past five years carry most of the weight here. Each pooled randomized trials, and each found something smaller and more specific than “longevity.”
Older adults and people with chronic disease. Researchers at Queen Mary University of London’s William Harvey Research Institute pooled 33 randomized trials with about 1,100 participants in a 2024 review in the Journal of Parenteral and Enteral Nutrition. Compared with placebo, creatine produced small improvements in upper-body and grip strength and added about 1 kilogram of lean tissue. The authors rated the quality of evidence for every outcome as low or very low, because the trials carried a high risk of bias. The participants, conditions and protocols varied, so the average isn’t a prediction for any one person.
Adults over 50 who lift. A 2021 meta-analysis in Nutrients, led by Scott Forbes of Brandon University in Manitoba with University of Regina kinesiology researcher Darren Candow, pooled about 20 small trials in people averaging over 50. Creatine taken during a resistance-training program increased lean tissue and strength more than placebo. The authors’ sub-analyses pointed to a loading week—an initial period of higher creatine intake in the studies—as important for strength gains, but the trials averaged only 34 people each, and the authors wrote that they were “likely unpowered to detect small differences.” Candow serves on the scientific advisory board of AlzChem, a creatine manufacturer, and has conducted industry-sponsored creatine research, according to the paper’s competing-interests statement; Forbes and a third co-author also reported creatine-industry ties.
Adults 60 and older, training with or without creatine. A 2026 review in Frontiers in Nutrition by researchers at Guangzhou Maritime University and two other Chinese universities pooled 11 randomized trials (PubMed). Adding creatine to resistance training gave a small extra strength benefit, with moderate certainty. Its effects on muscle mass and physical function were not statistically significant, with low and very low certainty. The authors declared no conflicts, and they cautioned against applying the results to older adults who are frail or have sarcopenia (loss of muscle strength and mass), who were mostly not studied.
A detectable gain on a gym test isn’t the same as fewer falls, less disability or fewer deaths. None of these reviews measured those. See the review numbers
Postmenopausal women. A 2026 review in the Journal of the International Society of Sports Nutrition, led by Siavash Naddafha of Edith Cowan University in Australia, pooled seven placebo-controlled trials with about 600 women. It reported small gains in lean mass and strength, particularly with at least 5 grams a day plus resistance training, without evidence of harm in the included studies. Bone density was unchanged overall. Only one included trial tracked fractures, and it wasn’t designed to detect a difference; none measured survival. One author chairs a creatine scientific advisory board supported by Alzchem, a creatine manufacturer, which also helped pay the publication fee, according to the paper’s disclosures.
Does greater strength mean a longer life?
Strength, mobility and independence are meaningful parts of living longer and better. That doesn’t make every intervention that improves a strength test a longevity treatment.
The creatine trials were built to measure muscle mass, lifting strength or physical performance over weeks or months. They weren’t large, multi-year mortality trials. A chain of reasoning (creatine may improve training, training may preserve strength, strength may support function) explains why the supplement comes up in healthy-aging conversations. It can’t show how many years creatine adds to life, or whether it adds any.
Observational findings about dietary creatine or muscle strength can’t settle the supplement question either. People who eat more creatine-rich foods, train regularly or stay strong differ in many other ways. A randomized longevity trial would need to isolate supplementation and follow enough people for long enough to measure disability, heart events or death. That trial doesn’t exist.
What would connect creatine-related strength gains to a demonstrated lifespan benefit?
Dose and form: one plain powder, many labels
The supplement aisle sells creatine in more flavors and formats than seems strictly necessary. The research is mostly about one of them: creatine monohydrate.
The NIH Office of Dietary Supplements (ODS) summarizes two approaches studied in adults. One is a loading week of about 20 grams a day, split into four doses, followed by 3 to 5 grams a day. The other study protocol skips loading and uses about 3 to 6 grams a day from the start, filling muscle stores more gradually over three to four weeks. These are research protocols, not a dose shown to extend life. The International Society of Sports Nutrition notes that early loading studies found short-term water retention that roughly matched the quick gain on the scale. See the dosing details
ODS reports no evidence that more expensive forms outperform creatine monohydrate. On timing, the 2021 meta-analysis didn’t compare before-workout with after-workout doses; it found that taking creatine only on training days still beat placebo.
Creatine can increase body weight, often by 1 to 2 kilograms in the first month, according to ODS. Early gain is largely water held with creatine in muscle; longer trials that include resistance training may also show lean-tissue gain. A bathroom scale can’t tell those apart.
What happens to kidney tests when you take creatine?
Creatine is partly broken down into creatinine, the blood marker most labs use to estimate kidney filtration. A 2025 review from Isfahan University of Medical Sciences’ kidney disease research center in Iran, published in BMC Nephrology, covered 21 studies. It found a “modest, transient increase” in blood creatinine with supplementation, and no significant change in kidney filtration in the five studies that measured or estimated it.
The authors wrote that relying on creatinine alone “may be misleading” in people taking creatine. In practice, a creatinine-based kidney estimate can look worse after supplementation even when filtration hasn’t changed. They also noted that long-term safety data beyond one year remain sparse. See the kidney details
That doesn’t mean kidney concerns should be dismissed. The National Center for Complementary and Integrative Health (NCCIH) notes reports that creatine may impair liver and kidney function, and a link to compartment syndrome, a condition in which pressure builds inside a muscle and cuts off blood flow. It says people at risk of kidney problems should check with their health care providers and be carefully monitored, and that there are no data documenting creatine’s safety in children or adolescents. A clinician may factor creatine use into how they read creatinine, or whether another filtration marker is useful.
Common tolerability issues include water-weight gain, and ODS lists anecdotal reports of nausea, diarrhea and other stomach upset. Product quality is a separate risk. The FDA says it does not have the authority to approve dietary supplements for safety and effectiveness before they’re sold. It advises talking with a health care professional before taking a supplement, notes that some supplements can interfere with lab tests, and asks consumers to report serious reactions.
What information would help distinguish a change in creatinine from a change in kidney filtration?
What’s Interesting
Creatine’s longevity story is unusually ordinary. The molecule isn’t acting as a mystical age switch; its most-studied job is helping the short-burst energy system do its work. If that creates a small edge in training, any value builds up workout by workout, not from a scoop acting alone. As origin stories go, “helped you squeeze out one more rep” won’t sell many movie tickets. It is, however, the one the trials actually tested.
The open questions now sit downstream: whether stronger training adaptations turn into fewer falls, longer independence or better recovery during illness. Those are the outcomes that would move creatine from a performance aid with healthspan relevance toward a genuine longevity intervention.
What This Means in Practice
The useful first questions are about the person, not the tub. Is the goal to support resistance training? Which form and dose did a relevant study test? Are kidney disease, pregnancy, medications or an upcoming kidney test part of the picture?
It also helps to notice who the averages came from. The 2024 review pooled older adults and adults with chronic disease, and the 2026 review in postmenopausal women saw its gains mainly at 5 grams a day or more alongside resistance training. Someone who isn’t training, or whose kidney results already need watching, starts from a different place than the typical participant.
In its exercise-supplement fact sheet, ODS describes 3 to 5 grams per day as a maintenance phase used in adult creatine studies and separately describes a no-loading study protocol. Neither establishes a longevity dose or determines what is appropriate for a particular person. A registered dietitian, sports-medicine clinician or primary-care professional can discuss supplement use when health conditions, medications or kidney testing are involved.
An independent mark such as NSF Certified for Sport adds a quality check. NSF says its program confirms that a product’s contents match its label and screens for banned substances and unsafe contaminants. That’s a manufacturing check, not proof that the supplement will produce a health outcome.
The age-specific evidence, dosing ranges and kidney cautions are developed in Creatine After 50, with the menopause-specific trials in Creatine for Women During and After Menopause.
Bottom Line
Creatine hasn’t been shown to help humans live longer. The supported case is narrower: creatine monohydrate can improve high-intensity exercise capacity, and in older adults who do resistance training it adds a small strength gain, with weaker evidence for extra muscle. For anyone focused on living longer and better, that relevance runs through strength and function, and the link to lifespan remains indirect and untested. If kidney health, medications or pregnancy are in the picture, a clinician is the right next conversation.
A NOTE FROM LONGEVITY365
We read research, consult expert perspectives and work to make complicated health information easier to understand. What you’re reading here reflects how we’ve interpreted and organized that information. It is educational content—not personal medical advice, diagnosis or treatment guidance.
We’re not perfect, and neither is the available research. Evidence changes, new studies emerge and what’s appropriate for one person may not be appropriate for another.
Use this article as a starting point for your own research and conversations with qualified professionals. Always talk with your doctor or another trusted healthcare professional before making decisions that could affect your health, particularly if you take medications, are receiving treatment, have existing health conditions, are pregnant or have other circumstances that could affect what’s appropriate for you.
Reader Questions
A few questions to carry into the comments or your next conversation. Please leave out identifying or personal medical details.
- 01What would you want to know before putting "Does Creatine Help You Live Longer" into the same conversation as sleep, food, movement, and medical care?
- 02Which evidence boundary stood out most: lifespan, function, symptoms, biomarkers, dose, safety, or who was actually studied?
- 03What question would help keep a supplement conversation grounded instead of turning it into a shopping list?
Extra Insights & Sources
For readers who want the details behind each claim above.
What We Know
- Creatine monohydrate improves performance in repeated short, intense efforts and can enhance resistance-training adaptations. Established/Supported. (NIH ODS)
- In pooled trials involving older adults, the average added strength gain is small. Supported. (2026 meta-analysis, moderate certainty) Lean-mass gains appear in some pooled analyses but rest on low-quality evidence. Preliminary. (2024 meta-analysis)
- Creatine may raise serum creatinine without a significant change in filtration, which can complicate a creatinine-based kidney estimate. Supported. (2025 kidney meta-analysis)
- Creatine monohydrate has been studied far more than other forms, and no other form has been shown to work better. Supported.
What We Don’t Know
- Whether creatine supplementation reduces falls, disability, dementia, cardiovascular events or all-cause mortality in generally healthy adults. Unknown. Existing trials are not designed to answer all of those outcomes.
- Whether taking creatine for decades is safe and beneficial across every older population, disease and medication combination. Unknown. Most randomized trials are much shorter, and the 2025 kidney review found long-term data beyond one year sparse.
- Whether the strength findings apply to frail or sarcopenic older adults. Unknown. The 2026 Frontiers in Nutrition authors cautioned against extending their results to those groups.
- Whether proposed cognitive effects are clinically meaningful for healthy, well-rested adults. Contested/Preliminary. Cognitive studies use different populations, doses and tests and do not establish dementia prevention.
The muscle reviews in detail
SMD and g express differences between groups on a standardized scale so studies using different tests can be combined. CI means confidence interval, the range expressing statistical uncertainty. I² describes variation between study results; GFR in the kidney section means the rate at which kidneys filter blood. These statistical measures are not estimates of years of life gained.
Davies et al., 2024 (Queen Mary University of London). The review searched MEDLINE, EMBASE, the Cochrane Library and CINAHL through November 2022 and included 33 randomized placebo-controlled trials with 1,076 participants, all older adults or adults with chronic disease. First author Thomas Davies and senior author Zudin Puthucheary are at the William Harvey Research Institute, Queen Mary University of London. The primary outcome, sit-to-stand performance, was reported in six trials: SMD 0.51 (95% CI 0.01–1.00; I² = 62%; P = 0.04), with a Bayesian posterior probability of benefit of 66.7%. That figure is the statistical model’s estimate of the probability of an average benefit on sit-to-stand performance after combining the data with its assumptions. It does not mean 66.7% of participants improved or give an individual’s chance of benefit. Upper-body strength: SMD 0.25 (95% CI 0.06–0.44). Handgrip strength: SMD 0.23 (95% CI 0.01–0.45). Lean tissue mass: mean difference 1.08 kg (95% CI 0.77–1.38). The authors rated the quality of evidence for all outcomes as low or very low because of a high risk of bias, and called high-quality prospective randomized trials crucial to confirm their hypotheses. (Note 1)
Forbes, Candow et al., 2021 (Nutrients). Included trials had to enroll healthy or chronically ill participants with a mean age above 50 and randomize them to creatine monohydrate or placebo during resistance training. Of the 20 studies tabulated, 6 used a lower dose (≤5 g/day for 12–26 weeks), 6 used a loading phase (≥20 g/day for 5–7 days) then ≤5 g/day, 2 used loading then >5 g/day, 6 used >5 g/day for 8–52 weeks, and 4 gave creatine only on training days. The authors concluded that “a creatine-loading phase is important for older adults wanting to improve muscle strength,” that after loading “a lower daily dosage of creatine (≤5 g) appears sufficient to improve upper-body strength,” and that “a higher daily dosage of creatine (>5 g) after the loading phase is needed to increase lower-body strength.” When loading studies were excluded, creatine had no greater effect than placebo on chest-press or leg-press strength. The average trial had 34 participants, and the authors wrote that the studies were “likely unpowered to detect small differences in lean tissue mass and strength.” The paper received no external funding. Its conflict-of-interest statement says Forbes “has previously served as a scientific advisor for a company that sold creatine”; Candow “has conducted industry-sponsored research involving creatine supplementation, received creatine donations for scientific studies and travel support,” “serves on the Scientific Advisory Board for AlzChem (a company which manufactures creatine) and has previously served as the Chief Scientific Officer for a company that sells creatine products”; and co-author Sergej Ostojic serves on an AlzChem creatine advisory board, holds creatine-related patents and has received creatine research funding from AlzChem and other companies.
Yao, Yang and Gao, 2026 (Frontiers in Nutrition). Authors Lingzi Yao (Guangzhou Maritime University), Doudou Yang (Guangdong University of Science and Technology) and Jiajia Gao (Tianjin University of Sport) searched four databases through May 20, 2026, and included 11 randomized trials in adults 60 and older comparing creatine plus resistance training with resistance training alone or with placebo. Three-level meta-analysis results: muscle strength g = 0.31 (95% CI 0.18–0.45; moderate certainty); muscle mass g = 0.35 (95% CI −0.09 to 0.78; low certainty); physical function g = 0.47 (95% CI −0.08 to 1.03; p = 0.086; very low certainty). Dose, loading, duration, training frequency and intensity, sex and testing site did not explain the variation. The authors concluded that creatine “may serve as an adjunct to resistance training for modest improvements in muscle strength” in generally healthy older adults, and that the findings “should not be directly extrapolated to frail, sarcopenic or functionally limited older adults.” They declared no commercial or financial conflicts.
Naddafha, Antonio, Kreider and Stout, 2026 (Journal of the International Society of Sports Nutrition). Seven randomized placebo-controlled trials (608 women randomized; 12–104 weeks, median 38; mean age about 62). Lean mass (five trials, 338 women): +0.37 kg (95% CI 0.05–0.69), rated moderate certainty. Leg-press one-repetition maximum (three trials, 111 women): +7.5 kg (95% CI 2.2–12.8). Benefits appeared when at least 5 g/day was combined with resistance training; trials using 3 g/day or less without training showed no measurable effect. Adverse events were mild and similar to placebo, and kidney measures were unchanged. The authors rated the evidence as moderate-to-high certainty that creatine does not meaningfully improve bone density. Only one trial (Chilibeck et al., 2023) reported fractures over one year; rates did not differ, and that trial was not powered for fractures. The review was not prospectively registered. The authors concluded that creatine “yields small but meaningful gains in lean mass and strength without evidence of harm.” Disclosures: the paper states that none of the authors has a conflict “related to this work,” and then discloses that Richard Kreider “serves as Chair of the Creatine for Health Scientific Advisory Board that is supported by Alzchem”; that Jose Antonio is CEO of the International Society of Sports Nutrition, which “receives funding on occasion from companies that manufacture, market, or sell creatine”; and that Alzchem supported the remaining article processing charge after the publisher’s waiver.
Dose, form and timing in detail
The NIH ODS fact sheet (updated April 1, 2024) summarizes two commonly studied approaches:
| Approach | Studied pattern | Practical tradeoff |
|---|---|---|
| Loading, then maintenance | About 20 g/day, divided into four doses, for 5–7 days; then 3–5 g/day | Saturates muscle sooner; early loading studies found short-term water retention alongside the quick weight gain (ISSN 2017) |
| No loading | About 3–6 g/day for 3–4 weeks | Reaches saturation more gradually; simpler for many people |
The International Society of Sports Nutrition’s 2017 position stand gives the same pattern: about 5 g of creatine monohydrate four times a day (roughly 0.3 g/kg) for 5–7 days, then 3–5 g/day, or 3–5 g/day alone, which raises muscle stores over three to four weeks. It says clinical evidence has not shown that citrate, ethyl ester, buffered, nitrate or serum forms promote greater creatine retention than monohydrate. Its lead author, Richard Kreider, disclosed industry-funded creatine research and consulting.
On timing, the 2021 Nutrients meta-analysis found that “creatine supplementation only on resistance training days significantly increased measures of lean tissue mass and strength compared to placebo”; it did not pool trials comparing doses taken before versus after exercise.
Kidney and safety details
Naeini et al., 2025 (BMC Nephrology). Researchers at Isfahan University of Medical Sciences searched PubMed, Scopus, Web of Science and Google Scholar for studies from January 2000 to March 2025. Twenty-one studies were included; 12 (177 people taking creatine, 263 controls) were pooled for serum creatinine. Creatinine rose by a small, statistically significant amount (p = 0.03). The rise was significant in studies of one week or less, not significant at 1 to 12 weeks, and significant again beyond 12 weeks. Pooled filtration data from five studies found no significant change in “either estimated or directly measured GFR.” The authors concluded: “Creatine supplementation is associated with a modest, transient increase in serum creatinine levels, likely due to metabolic turnover rather than renal impairment.” They noted that most included studies were short to moderate in length, that “long-term safety data beyond one year remain sparse,” and that most trials didn’t report how creatinine was measured. They declared no competing interests.
NCCIH (page last updated January 2021): “There have been reports that creatine may impair liver and kidney function. Creatine has also been linked to an increased risk of compartment syndrome.” “People at risk of kidney problems should check with their health care providers before using creatine and be carefully monitored while using it. There are no data documenting the safety of creatine in children or adolescents.” NCCIH adds that the American Academy of Pediatrics and the American College of Sports Medicine warn that teens should not use performance-enhancing supplements, including creatine.
FDA (content current as of June 2, 2022): “The FDA does NOT have the authority to approve dietary supplements for safety and effectiveness, or to approve their labeling, before the supplements are sold to the public.” The page advises talking with a health care professional before taking a supplement, notes that some supplements can “interfere with lab tests,” and encourages reporting adverse events to the FDA.
NSF Certified for Sport says certified products do not contain any of 290 substances banned by major athletic organizations, match their label contents, contain no unsafe levels of contaminants and are made in a GMP-certified facility audited by NSF.
Sources
- NIH Office of Dietary Supplements: Dietary Supplements for Exercise and Athletic Performance (Health Professional)
- Davies TW, et al. Creatine and physical function, JPEN Journal of Parenteral and Enteral Nutrition, 2024: PubMed 38417175
- Forbes SC, et al. Creatine ingestion strategies in older adults, Nutrients, 2021: PubMed 34199420
- Yao L, et al. Resistance training plus creatine in older adults, Frontiers in Nutrition, 2026: PubMed 42712402
- Naddafha S, et al. Creatine in postmenopausal women, Journal of the International Society of Sports Nutrition, 2026: PubMed 42141930
- Naeini EK, et al. Creatine and kidney function, BMC Nephrology, 2025: PubMed 41199218
- Kreider RB, et al. ISSN position stand on creatine, Journal of the International Society of Sports Nutrition, 2017: PubMed 28615996
- National Center for Complementary and Integrative Health: Bodybuilding and Performance Enhancement Supplements
- US Food and Drug Administration: FDA 101: Dietary Supplements
- NSF: Certified for Sport
Notes
Note 1: Funded by UK National Institute for Health Research fellowship grants, according to the review’s Europe PMC record.
Related product and service comparisons
The companion comparison describes named creatine powders, their labeled servings and specific quality-testing claims.
Photo credits
Images from Pexels.
- featured: Photo by Pavel Danilyuk — original Pexels photo.
- inline-1: Photo by Cedric Fauntleroy — original Pexels photo.
- inline-2: Photo by Art Guzman — original Pexels photo.
Leave a Reply