Creatine Science
What the research actually says about creatine.
Creatine Science reads the published research on creatine and summarizes what individual studies report, with links to primary sources.
Evidence first
We summarize published human research on creatine and derive references from verified evidence records.
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Where to begin
Creatine Guide
A single-path guide to creatine benefits, dosing, forms, safety, and product selection.
Follow the structured guide →Best Creatine Supplements
An evidence-informed comparison of leading creatine supplements. Every retained product is a creatine monohydrate powder evaluated on labeled dose, transparency, and independent testing.
Compare products →What is creatine?
Learn what creatine is, where it comes from, common supplement forms, and how Creatine Science reviews published studies, their findings, and limitations.
Read the foundational guide →Frequently asked questions
Creatine FAQs, answered from verified evidence
Start with a direct answer, then review the evidence context, limitations, and claim-derived references.
Does creatine cause hair loss?
The current human evidence does not show that creatine causes hair loss, but it is too limited to rule out an effect with confidence. One small 2009 trial found a rise in DHT but did not measure hair, while a 2025 randomized trial that directly measured hair found no difference from placebo over 12 weeks.
Read the sourced answer →Does creatine cause water retention?
Creatine combined with resistance training can increase lean body mass, but the available evidence does not cleanly quantify how much of that change is intracellular versus extracellular water. A meta-analysis reported about 1.1 kg more lean body mass on average, not fat gain.
Read the sourced answer →Does creatine help brain health and cognition?
Creatine may provide a small benefit for memory, particularly in some older adults, but broader cognitive benefits are unconfirmed. Meta-analyses of randomized trials found small pooled improvements in memory, while overall cognitive function and executive function did not improve significantly.
Read the sourced answer →Does creatine help build muscle and strength?
Creatine can add a modest increase in lean body mass when combined with resistance training. It is also associated with improvements in muscle strength, power, and other short-duration high-intensity performance. Meta-analyses report roughly 1.1 kg of additional lean mass on average versus training alone, while creatine without exercise did not significantly increase lean body mass.
Read the sourced answer →Does creatine help older adults?
Creatine can modestly improve lean tissue and some strength outcomes in older adults when it is added to resistance training. Meta-analyses report advantages for lean mass, chest press, leg press, and in one analysis chair-stand performance, but the trial base is limited and results vary by protocol.
Read the sourced answer →Does creatine help women?
Creatine may support lean mass, strength, and muscle function in women, especially when combined with resistance training. Female-specific evidence is smaller than the broader creatine literature, and the most direct randomized benefit data come from a 24-week trial in 60 older women.
Read the sourced answer →How do creatine forms compare?
Creatine monohydrate is the most extensively studied form. Reviews find little to no evidence that creatine HCl, buffered creatine, ethyl ester, salts, or other newer forms are more effective or safer than monohydrate.
Read the sourced answer →Is creatine safe for the kidneys?
In generally healthy adults, pooled human studies have not demonstrated kidney damage at the amounts and durations studied. Creatine can raise serum creatinine because creatinine is a normal breakdown product of creatine, so a laboratory change is not automatically evidence of reduced filtration.
Read the sourced answer →Featured research
Start with the evidence
Creatine and Muscle Growth
Meta-analyses of randomized trials report that creatine supplementation combined with resistance training produces a modest additional increase in lean body mass (around 1 kg on average) versus training alone, at doses near 7 g/day or 0.3 g/kg/day; creatine without exercise showed no significant lean-mass effect.
Published June 22, 2026Read the research →Creatine and Kidney Function
Evidence review of creatine and kidney function: pooled human studies in healthy adults show no demonstrated harm to renal markers such as serum creatinine and urea, with important limits for people who have pre-existing kidney disease.
Published June 22, 2026Read the research →Do You Need to Load Creatine?
Evidence-based overview of whether a creatine loading phase is necessary. A controlled study found both about 20 g/day for 6 days and a steady 3 g/day raised muscle creatine roughly 20%, with loading reaching saturation faster.
Published June 22, 2026Read the research →More research
Latest Research
Creatine and Cognition
Research overview of creatine and cognition. Meta-analyses of randomized trials report small improvements in memory, strongest in older adults, but evidence for broader cognitive function remains limited and mixed.
Published June 22, 2026Read the research →Creatine and Hair Loss
The claim that creatine causes hair loss traces to one small trial reporting a rise in DHT, but it never measured hair; the only RCT to assess hair follicle health directly found no effect. The evidence is limited and not conclusive.
Published June 22, 2026Read the research →Creatine and Water Retention
Evidence-based overview of creatine and water retention, drawing on an expert review of the creatine literature and a meta-analysis of randomized trials reporting modest gains in lean body mass with creatine plus resistance training.
Published June 22, 2026Read the research →How we evaluate
Transparent methodology
Every ranking comes from a published scoring rubric — ingredient form, labeled dose, label transparency, third-party testing, additives, and convenience. We do not score value, and we never present Amazon popularity as evidence of effectiveness.
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