Creatine
Everything you need to know about creatine: dosing, cognitive benefits, safety, and the latest research. Episodes from Layne Norton, Huberman, and FoundMyFitness.
The most researched supplement in sports science, proven to increase strength, muscle mass, and cognitive function
Creatine monohydrate has more evidence behind it than any other sports supplement. Over 500 peer-reviewed studies. Multiple meta-analyses. An ISSN position stand explicitly endorsing it. The strength and muscle mass effects are dose-dependent, reproducible, and large enough to matter for real-world training.
Where the evidence is overwhelming: strength gains (+8-14%), lean mass gains (+1-2 kg per training cycle), power output (+5-15%), recovery between sets. Wang 2024 meta-analyzed 23 studies and found significant increases in both upper-body (+4.4 kg) and lower-body (+14.5 kg) strength.
Where the evidence is strong and growing: cognitive function. Xu 2024 meta-analyzed 16 RCTs and found creatine improved memory (SMD 0.31), attention, and intelligence measures. Forbes 2022 found stronger effects in older adults and vegetarians. This is the most exciting frontier in creatine research.
Where the evidence is moderate: older adult functional performance. Davies 2024 showed improved sit-to-stand, grip strength, and walking speed. Promising but the effect sizes are smaller than in younger athletes.
Where the evidence is clear on safety: Kreider 2017 ISSN position stand reviewed decades of data and found no adverse effects on kidney function, liver function, or any health marker in healthy individuals. The kidney damage myth comes from creatine raising creatinine (a metabolic byproduct used as a kidney marker), not from actual kidney damage.
The non-responder question: ~20-30% of people see minimal ergogenic effects. These tend to be people who already have high baseline creatine stores (typically heavy meat eaters with high muscle mass). Vegetarians and vegans are the best responders because their baseline stores are lowest.
If you lift weights, play a sport, or want a cognitive edge, creatine monohydrate should be in your daily stack. There is no legitimate reason to skip it.
Science & Mechanisms
The Numbers That Matter
| Metric | Value | Source |
|---|---|---|
| Strength gain vs placebo | +8% (upper), +14% (lower body) | Rawson 2004 |
| Upper-body strength gain | +4.4 kg 1RM | Wang 2024 |
| Lower-body strength gain | +14.5 kg 1RM | Wang 2024 |
| Lean mass gain | +1.14 kg per training cycle | Desai 2025 |
| Body fat reduction | -0.55% body fat percentage | Desai 2025 |
| Memory improvement | SMD 0.31 (small-moderate) | Xu 2024 |
| Older adult sit-to-stand | SMD 0.51 (moderate) | Davies 2024 |
| ISSN safety verdict | No adverse effects in healthy individuals | Kreider 2017 |
Mechanisms
1. Phosphocreatine replenishment. The primary mechanism. Muscles use phosphocreatine (PCr) to regenerate ATP during the first 10-15 seconds of maximal effort. Supplementing creatine increases PCr stores by 20-40%, meaning you can sustain high-intensity output for a few more reps or seconds before fatiguing. This is why creatine helps most on the last few reps of a set — exactly where hypertrophy stimulus is strongest.
2. Cell volumization. Creatine is osmotically active — it pulls water into muscle cells. This cell swelling acts as an anabolic signal, increasing protein synthesis and reducing protein breakdown. The 1-2 kg weight gain from creatine is mostly intracellular water, which makes muscles look fuller and contributes to the growth stimulus.
3. Satellite cell activation. Creatine increases the number of myonuclei in muscle fibers through satellite cell recruitment. More myonuclei means greater capacity for muscle growth over time. This is one reason creatine's benefits compound with consistent use.
4. Brain ATP support. Creatine crosses the blood-brain barrier. The brain consumes ~20% of the body's ATP despite being ~2% of body weight. Under conditions of stress, sleep deprivation, or cognitive demand, brain creatine stores matter. Xu 2024 found supplementation improved memory, attention, and intelligence measures across 16 RCTs.
5. Anti-catabolic effects. During caloric restriction or intense training, creatine helps preserve lean mass by maintaining cell hydration and reducing protein breakdown markers. Desai 2025 found creatine during resistance training reduced body fat percentage by 0.55% even without specific calorie restriction.
What the Evidence Actually Says
Strength and muscle: Unambiguous. Branch 2003 established the lean mass benefit. Rawson 2004 quantified the strength gains. Burke 2023 confirmed consistent hypertrophy effects. Chilibeck 2017 meta-analyzed 64 studies and found +1.4 kg lean mass. Wang 2024 showed +4.4 kg upper and +14.5 kg lower body 1RM. No serious study disputes these effects.
Cognition: The newer frontier, and it's getting stronger with each meta-analysis. Avgerinos 2018 found benefits under stress and sleep deprivation. Prokopidis 2023 showed improved memory (SMD 0.29). Xu 2024 broadened to memory, attention, and intelligence. Forbes 2022 found the strongest effects in older adults and vegetarians. Roschel 2021 reviewed the neuroprotective angle including TBI and neurodegenerative potential.
Older adults: Davies 2024 is the key paper. Creatine improved functional measures (sit-to-stand, grip strength, walking speed) in people at risk of disability. Combined with resistance training, it's a strong intervention against sarcopenia.
Safety: Kreider 2017 ISSN position stand: "There is no scientific evidence that the short- or long-term use of creatine monohydrate has any detrimental effects on otherwise healthy individuals." Decades of data on thousands of subjects. The kidney myth persists because of a misunderstanding of creatinine blood markers.
Non-responders: Real. ~20-30% of people see minimal ergogenic benefit. These tend to have high baseline creatine stores (heavy meat eaters, high existing muscle mass). They still get the cognitive benefits because brain creatine stores are independent of muscle stores.
Episodes
Dr. Layne Norton does a deep dive into creatine safety research. Examines the evidence showing creatine is safe and effective, addressing common concerns and misconceptions.
Chris Masterjohn makes the case that most people are creatine deficient and explains the wide-ranging benefits beyond muscle building. He covers creatine's role in brain health,...
Chris Masterjohn discusses common side effects of creatine supplementation and how to manage them effectively. He covers the mechanisms behind issues like water retention, diges...
Dr. Layne Norton answers listener questions on protein intake, creatine, weight loss, and more. Provides evidence-based answers to common nutrition and training questions.
Loading phase (20g/day for 2-7 days) saturates muscle fast; without loading, 3g daily takes about 21 days. For bone health, you need at least 8g daily; 3-5g won't cut it. Higher...
In this premium AMA episode, Andrew Huberman answers listener questions about protein supplementation, comparing whey protein and collagen/bone broth across different health goa...
Three supplements with solid evidence for brain health: EPA omega-3s (1.5-3g daily) for neuronal membranes, creatine (5g daily) as brain fuel for mood and cognition, and choline...
Dr. Stacy Sims, an exercise physiologist and nutrition scientist specializing in female-specific training, joins Huberman to discuss how women's physiology demands different app...
Andrew Huberman explains the neuroscience and physiology of muscle growth, strength development, and recovery. He covers the three-tier motor control system (upper motor neurons...
Muscle mass is one of the strongest predictors of how long you'll live. The current protein RDA is too low—optimal intake is 1.2-1.6g/kg, and older adults need even more per mea...
Dr. Chris Palmer, a Harvard psychiatrist and pioneer of metabolic psychiatry, explains how mitochondrial health is the unifying framework connecting mental and physical health. ...
Progressive overload drives muscle growth; creatine (3-5g daily, no loading needed) is the only supplement with robust evidence. Total daily protein matters more than timing. Sl...
Leanne Vogel, holistic nutritionist and functional medicine practitioner, presents a solo deep-dive into nicotine as a standalone compound separate from smoking. Motivated by li...
Andrew Huberman speaks with Dr. Gabrielle Lyon, a board-certified physician trained in geriatrics and nutrition, about how skeletal muscle is the organ of longevity and why main...
Comprehensive guide to losing fat and gaining muscle through nutrition strategies. Andrew Huberman covers the science of body composition, meal timing, macronutrients, and pract...
Nail your supplement stack with evidence-based dosing: 3-5g creatine daily, protein at 1.6-2.2g/kg for athletes, and strategic caffeine timing for performance. Most supplements ...
Most people underestimate calories by 600/day and overestimate activity by 50%. Training to near-failure produces the same muscle growth as training to absolute failure with les...
Paul Saladino and pharmacist/author James DiNicolantonio cover creatine and carbs for post-exercise recovery, their views on fasting and keto, insulin resistance, magnesium supp...
Andrew Huberman breaks down the science of endurance into four distinct categories: muscular endurance, long-duration endurance, high-intensity anaerobic conditioning, and high-...
Dr. Andy Galpin, human performance scientist and co-director of the Center for Sport Performance at CSU Fullerton, works with Tim to reboot his sleep, nutrition, and supplement ...
Two years of consistent exercise can reverse roughly 20 years of cardiovascular aging in sedentary middle-aged adults. Muscle mass drops 8% per decade without resistance trainin...
Andrew Huberman has a wide-ranging conversation with Dr. Layne Norton, one of the world's foremost experts in nutrition and training, covering evidence evaluation, fat loss, mus...
Dr. Andy Galpin interviews Dr. Michael Ormsbee, a professor of exercise science and nutrition, about the intersection of food timing, macronutrient strategy, and supplementation...
Andrew Huberman interviews Dr. Sean Mackey, Chief of the Division of Pain Medicine at Stanford, for a comprehensive exploration of pain science and management. Mackey explains t...
Layne Norton kicks off his supplement series with his "Mount Rushmore" of ergogenic supplements: creatine monohydrate, whey protein, and caffeine. He walks through why these thr...
The Mind Pump hosts coach live callers on getting leaner, covering why body fat percentage matters more than scale weight and the lifestyle habits that actually move the needle....