Study analysis · Frontiers in Nutrition · 2026
Creatine won't fix your cholesterol – here's what the science actually says
Taking creatine supplements doesn't significantly change your cholesterol or triglyceride levels, according to a new analysis of the best available studies.
Overview
What the study found
The study in plain English — the bottom line, every takeaway we extracted, and what to do with them.
In simple terms
This study is like a report card that combines the results from 8 different experiments where people took creatine or a fake pill, and then checked their cholesterol. Because the experiments were well done (randomized and placebo-controlled), we can get a pretty good idea of whether creatine changes cholesterol. But the results say creatine doesn't seem to make a difference—your cholesterol stays about the same whether you take it or not. However, because not all the experiments were perfect, we can't be 100% sure.
What’s the bottom line?
Creatine is a popular supplement for muscles. This study looked at whether creatine pills change the levels of fats (cholesterol and triglycerides) in your blood. Researchers combined results from 8 studies where some people took creatine and others took fake pills (placebo).
How strong is this study?
This study is like a super-organized librarian who found all the best experiments on creatine and cholesterol, put them together, and checked how trustworthy each one was. But some of those experiments had small problems, like not reporting everything clearly, which makes the overall answer a bit fuzzy. So while the study was done carefully, the quality of the evidence it used wasn't top-notch, meaning we should take the results with a grain of salt.
40 / 100
- COI disclosure+40/40
- Data availabilitydata not shared
- Code availabilitycode not shared
0 / 100
- Randomizationnot randomized
- Blindingnot blinded
- Control groupno control group
- Sample sizeno sample size reported
- Follow-upno follow-up reported
100 / 100
100 / 100
- P-values+15/15
- Effect size+20/20
- Confidence intervals+15/15
- Pre-registration+15/15
Each component is scored out of 100 and then capped by the study design — a case series cannot reach the ceiling a randomised trial can, however well it is reported.
Where it sits
RCT reviewsReviews of RCTs (Meta-analyses)
Max 100Randomized TrialsRandomized Trials
Max 90Reviews of Cohort StudiesReviews of Cohort Studies
Max 85Cohort StudiesCohort Studies
Max 72Reviews of Case-Control StudiesReviews of Case-Control Studies
Max 63Case-Control StudiesCase-Control Studies
Max 58Cross-Sectional & Case SeriesCross-Sectional & Case Series
Max 50Expert OpinionExpert Opinion
Max 553 / 100
Probability of being correct
The highest quality evidence. Systematic reviews and meta-analyses that pool randomized controlled trials, giving the most reliable summary of experimental evidence.
This design can establish causation. Although this is a systematic review of RCTs, the included trials had methodological limitations, high heterogeneity, and the overall certainty of evidence was low to very low, limiting confidence in causal conclusions.
COI Unknown
Could not determine conflict of interest status
No conflict of interest or funding information provided in the text.
Independent Analysis Safeguards
- Two independent reviewers conducted screening and data extraction, with a third reviewer for disagreements.
- Risk of bias assessed using Cochrane RoB 2 tool by two independent reviewers.
- GRADE approach used to assess certainty of evidence.
The study does not include a conflict of interest or funding disclosure section. The authors appear to be academic researchers without declared industry ties. The systematic review methodology follows PRISMA and includes independent assessment steps, but without explicit disclosures, the presence of conflicts cannot be ruled out.
Key takeaways
- 01
No big differences were found between creatine and placebo groups.
- 02
For example, total cholesterol changed by only about 3 mg/dL, which is very small and could be due to chance.
- 03
For a person, these tiny changes are not enough to affect heart health or to recommend creatine as a way to improve cholesterol.
Surprising findings
- Animal studies show creatine reduces fat and improves metabolism, but human trials don't replicate this.Contradicts mechanistic hype from preclinical research.
- Substantial heterogeneity for triglycerides (I²=55%) despite overall null result.Some studies showed improvement, others worsening – but average is zero.
Practical takeaways
Don't take creatine expecting cholesterol improvements.
Study limitations: small samples, short duration (≤12 weeks), and low certainty of evidence.
medium confidenceIf you take creatine for muscle, continue safely – it won't hurt your heart.
Monitor overall health; not a substitute for diet/exercise.
high confidenceWhy this study matters
No Effect on Cholesterol
Meta-analysis of 8 RCTs (111 creatine, 106 placebo) found no significant change in total cholesterol (MD 2.9 mg/dL, 95% CI: -7.44 to 13.24), LDL (MD 4.08 mg/dL, 95% CI: -2.55 to 10.70), HDL (MD -0.68 mg/dL, 95% CI: -3.94 to 2.59), or triglycerides (MD 7.95 mg/dL, 95% CI: -13.73 to 29.63). All p-values >0.05.
Many people take creatine for health, but it doesn't improve lipid profile.
Low Certainty of Evidence
GRADE assessment rated evidence very low for total cholesterol and triglycerides, low for LDL and HDL due to serious imprecision, indirectness, and heterogeneity (I²=55% for triglycerides).
Means we can't fully rule out an effect – more research needed.
Creatine Is Still Safe
Safety data from over 12,800 participants showed no increased risk of renal, hepatic, or cardiovascular adverse events vs placebo. Only 4.60% of creatine users reported any side effect vs 4.21% in placebo.
Even if it doesn't help cholesterol, it's safe – so don't worry.
Want the whole report?
Detailed mode opens the full scientific breakdown — every score component, the methodology, conflicts of interest, the evidence analysis behind each claim, and the raw study data.
Overview
What the study found
The study in plain English — the bottom line, every takeaway we extracted, and what to do with them.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Creatine is a popular supplement for muscles. This study looked at whether creatine pills change the levels of fats (cholesterol and triglycerides) in your blood. Researchers combined results from 8 studies where some people took creatine and others took fake pills (placebo).
Research results
No big differences were found between creatine and placebo groups. For example, total cholesterol changed by only about 3 mg/dL, which is very small and could be due to chance.
What this means - more context
For a person, these tiny changes are not enough to affect heart health or to recommend creatine as a way to improve cholesterol.
To evaluate the impact of creatine supplementation on blood lipid profile parameters (total cholesterol, LDL-C, HDL-C, triglycerides) with a systematic review and meta-analysis of randomized placebo-controlled trials.
Pooled analyses from 8 RCTs showed no statistically significant effects of creatine supplementation on total cholesterol (MD: 2.9 mg/dL), LDL-C (MD: 4.08 mg/dL), HDL-C (MD: -0.68 mg/dL), or triglycerides (MD: 7.95 mg/dL). Certainty of evidence was low to very low due to serious imprecision and indirectness.
Methods Used
Systematic review with meta-analysis following PRISMA guidelines; 8 randomized placebo-controlled trials; searches in 7 databases up to June 2025; risk of bias assessed with Cochrane RoB 2; certainty of evidence assessed with GRADE.
Main Finding
Creatine supplementation (up to 12 weeks) does not significantly alter total cholesterol, LDL-C, HDL-C, or triglyceride levels in adults.
Confidence Level
Low to very low certainty due to serious imprecision, indirectness, and heterogeneity (I²=55% for triglycerides).
Study Flags
Red Flags
- •Small number of included studies (8 RCTs) with limited sample sizes (111 creatine, 106 control).
- •Substantial heterogeneity for triglycerides (I²=55%).
- •Most studies raised some concerns about selective outcome reporting (D5 domain).
Surprising Findings
Animal studies show creatine reduces fat and improves metabolism, but human trials don't replicate this.
Contradicts mechanistic hype from preclinical research.
Practical Takeaways
Don't take creatine expecting cholesterol improvements.
RCT reviewsReviews of RCTs (Meta-analyses)
Max 100Randomized TrialsRandomized Trials
Max 90Reviews of Cohort StudiesReviews of Cohort Studies
Max 85Cohort StudiesCohort Studies
Max 72Reviews of Case-Control StudiesReviews of Case-Control Studies
Max 63Case-Control StudiesCase-Control Studies
Max 58Cross-Sectional & Case SeriesCross-Sectional & Case Series
Max 50Expert OpinionExpert Opinion
Max 553 / 100
Probability of being correct
The highest quality evidence. Systematic reviews and meta-analyses that pool randomized controlled trials, giving the most reliable summary of experimental evidence.
Human Meta-Analysis
Subject
Moderate probability
on the GRADE evidence scale
This study is like a report card that combines the results from 8 different experiments where people took creatine or a fake pill, and then checked their cholesterol. Because the experiments were well done (randomized and placebo-controlled), we can get a pretty good idea of whether creatine changes cholesterol. But the results say creatine doesn't seem to make a difference—your cholesterol stays about the same whether you take it or not. However, because not all the experiments were perfect, we can't be 100% sure.
Strengths
- Systematic search across multiple databases
- PRISMA guidelines followed
- GRADE assessment of certainty
Weaknesses
- High heterogeneity in some outcomes
- Risk of bias in included studies (selection of reported results, randomization issues)
- Small number of studies per outcome
Methodology
Evidence Keywords
Statistical Reporting
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Creatine is a popular supplement for muscles. This study looked at whether creatine pills change the levels of fats (cholesterol and triglycerides) in your blood. Researchers combined results from 8 studies where some people took creatine and others took fake pills (placebo).
Research results
No big differences were found between creatine and placebo groups. For example, total cholesterol changed by only about 3 mg/dL, which is very small and could be due to chance.
What this means - more context
For a person, these tiny changes are not enough to affect heart health or to recommend creatine as a way to improve cholesterol.
To evaluate the impact of creatine supplementation on blood lipid profile parameters (total cholesterol, LDL-C, HDL-C, triglycerides) with a systematic review and meta-analysis of randomized placebo-controlled trials.
Pooled analyses from 8 RCTs showed no statistically significant effects of creatine supplementation on total cholesterol (MD: 2.9 mg/dL), LDL-C (MD: 4.08 mg/dL), HDL-C (MD: -0.68 mg/dL), or triglycerides (MD: 7.95 mg/dL). Certainty of evidence was low to very low due to serious imprecision and indirectness.
Methods Used
Systematic review with meta-analysis following PRISMA guidelines; 8 randomized placebo-controlled trials; searches in 7 databases up to June 2025; risk of bias assessed with Cochrane RoB 2; certainty of evidence assessed with GRADE.
Main Finding
Creatine supplementation (up to 12 weeks) does not significantly alter total cholesterol, LDL-C, HDL-C, or triglyceride levels in adults.
Confidence Level
Low to very low certainty due to serious imprecision, indirectness, and heterogeneity (I²=55% for triglycerides).
Study Flags
Red Flags
- •Small number of included studies (8 RCTs) with limited sample sizes (111 creatine, 106 control).
- •Substantial heterogeneity for triglycerides (I²=55%).
- •Most studies raised some concerns about selective outcome reporting (D5 domain).
Surprising Findings
Animal studies show creatine reduces fat and improves metabolism, but human trials don't replicate this.
Contradicts mechanistic hype from preclinical research.
Practical Takeaways
Don't take creatine expecting cholesterol improvements.
RCT reviewsReviews of RCTs (Meta-analyses)
Max 100Randomized TrialsRandomized Trials
Max 90Reviews of Cohort StudiesReviews of Cohort Studies
Max 85Cohort StudiesCohort Studies
Max 72Reviews of Case-Control StudiesReviews of Case-Control Studies
Max 63Case-Control StudiesCase-Control Studies
Max 58Cross-Sectional & Case SeriesCross-Sectional & Case Series
Max 50Expert OpinionExpert Opinion
Max 553 / 100
Probability of being correct
The highest quality evidence. Systematic reviews and meta-analyses that pool randomized controlled trials, giving the most reliable summary of experimental evidence.
Human Meta-Analysis
Subject
Moderate probability
on the GRADE evidence scale
This study is like a report card that combines the results from 8 different experiments where people took creatine or a fake pill, and then checked their cholesterol. Because the experiments were well done (randomized and placebo-controlled), we can get a pretty good idea of whether creatine changes cholesterol. But the results say creatine doesn't seem to make a difference—your cholesterol stays about the same whether you take it or not. However, because not all the experiments were perfect, we can't be 100% sure.
Strengths
- Systematic search across multiple databases
- PRISMA guidelines followed
- GRADE assessment of certainty
Weaknesses
- High heterogeneity in some outcomes
- Risk of bias in included studies (selection of reported results, randomization issues)
- Small number of studies per outcome
Methodology
Evidence Keywords
Statistical Reporting
Scoring
How strong is this study?
This study is like a super-organized librarian who found all the best experiments on creatine and cholesterol, put them together, and checked how trustworthy each one was. But some of those experiments had small problems, like not reporting everything clearly, which makes the overall answer a bit fuzzy. So while the study was done carefully, the quality of the evidence it used wasn't top-notch, meaning we should take the results with a grain of salt.
40 / 100
- COI disclosure+40/40
- Data availabilitydata not shared
- Code availabilitycode not shared
0 / 100
- Randomizationnot randomized
- Blindingnot blinded
- Control groupno control group
- Sample sizeno sample size reported
- Follow-upno follow-up reported
100 / 100
100 / 100
- P-values+15/15
- Effect size+20/20
- Confidence intervals+15/15
- Pre-registration+15/15
Each component is scored out of 100 and then capped by the study design — a case series cannot reach the ceiling a randomised trial can, however well it is reported.
Where it sits
RCT reviewsReviews of RCTs (Meta-analyses)
Max 100Randomized TrialsRandomized Trials
Max 90Reviews of Cohort StudiesReviews of Cohort Studies
Max 85Cohort StudiesCohort Studies
Max 72Reviews of Case-Control StudiesReviews of Case-Control Studies
Max 63Case-Control StudiesCase-Control Studies
Max 58Cross-Sectional & Case SeriesCross-Sectional & Case Series
Max 50Expert OpinionExpert Opinion
Max 553 / 100
Probability of being correct
The highest quality evidence. Systematic reviews and meta-analyses that pool randomized controlled trials, giving the most reliable summary of experimental evidence.
This design can establish causation. Although this is a systematic review of RCTs, the included trials had methodological limitations, high heterogeneity, and the overall certainty of evidence was low to very low, limiting confidence in causal conclusions.
COI Unknown
Could not determine conflict of interest status
No conflict of interest or funding information provided in the text.
Independent Analysis Safeguards
- Two independent reviewers conducted screening and data extraction, with a third reviewer for disagreements.
- Risk of bias assessed using Cochrane RoB 2 tool by two independent reviewers.
- GRADE approach used to assess certainty of evidence.
The study does not include a conflict of interest or funding disclosure section. The authors appear to be academic researchers without declared industry ties. The systematic review methodology follows PRISMA and includes independent assessment steps, but without explicit disclosures, the presence of conflicts cannot be ruled out.