Supplements · Metabolic & Cardiometabolic
creatine improves glycemic control
In plain terms: Does creatine improve blood sugar control?
Part of: 🧪 creatine
Modestly, in some trials. One trial in type-2 diabetics improved blood sugar, but only alongside exercise, the evidence is inconsistent, and the positive results come mainly from one lab. Not the insulin fix the headlines suggest.
📅 Last reviewed: 2026-07-14 ⓘ
Evidence ladder
How far up the ladder this claim has climbed. A high consensus on a low rung means "consistent so far," not "proven in people."
Top evidence so far: Human trials (RCT / n-of-1)
How the studies fall
What the evidence shows
One RCT in type-2 diabetes (creatine + exercise) improved HbA1c and GLUT4 — but the benefit was exercise-dependent, an independent review found the evidence inconsistent, and the positive data come largely from one lab (Gualano). Promising in T2D-plus-exercise, not an insulin fix for everyone else — graded leans-support within that narrow scope only, on thin, lab-concentrated evidence.
The evidence (5)
| Source | Grade | Stance | Quality | Finding |
|---|---|---|---|---|
| Cheng C, Liu Y, Sun L, Fan J, Sun X, Zheng JS, Zheng L, Zhu Y, Zhou D 2025 · Cardiovascular diabetology | observational | supports | moderate | Metabolome-wide GWAS + two-sample Mendelian randomization in 1,180 Chinese participants (ZMSC), replicated cross-ancestry in Europeans, identified serum creatine as one of four metabolites with a genetically-inferred protective (causal) ass |
| Młynarska E, Leszto K, Katańska K, Prusak A, Wieczorek A, Jakubowska P, Rysz J, Franczyk B 2025 · Nutrients | observational | mixed | moderate | Narrative synthesis (not primary data) concludes creatine monohydrate + resistance/aerobic training shows potential to improve glycaemic control and attenuate muscle loss in T2D/older adults; explicitly flags that large RCTs are still neede |
| Delpino FM, Figueiredo LM 2022 · Clin Nutr ESPEN | meta-analysis | mixed | moderate | SR+MA of 9 experimental human studies (healthy and diabetic, to Dec 2020; abstract-grade). Pooled fasting glucose SMD 0.05 (95% CI -0.53 to 0.63; I2 22%) - a clean null on glucose; insulin resistance SMD -0.38 (-0.90 to 0.14) - underpowered trend toward benefit. Narratively, the only 2 studies in diabetic individuals (the claim's scope) found benefit; 5 of 9 studies showed benefit on at least one parameter. Authors: 'insufficient basis to state that creatine can positively affect diabetes parameters.' Mixed: pooled null mostly from non-diabetic participants vs in-scope diabetic studies favourable; per-study n per pooling cannot-tell from abstract. |
| Gualano B, DE Salles Painneli V, Roschel H, Artioli GG, Neves M, De Sá Pinto AL, Da Silva ME, Cunha MR, Otaduy MC, Leite Cda C, Ferreira JC, Pereira RM, Brum PC, Bonfá E, Lancha AH 2011 · Med Sci Sports Exerc | RCT | supports | moderate | Double-blind RCT in type-2 diabetes: creatine + exercise improved glycemic control (HbA1c) and GLUT4 translocation. |
| Solis MY, Artioli GG, Gualano B 2021 · Nutrients | observational | mixed | low | Review: creatine shows potential in glucose management and diabetes, largely exercise-dependent. |
Disagree, or know a study we missed?
We grade by evidence, not opinions. The way to weigh in is to point us to a study we haven't cited (check the evidence table above first), or to flag a problem with one we have. Every submission is reviewed; if it holds up, the grade updates and shows in Science Changes Its Mind.
Opens a short form. You'll sign in with Google so submissions are tied to a real account — we don't display your identity, and we only accept a link we can verify (PubMed, DOI, ClinicalTrials.gov).
Educational only, not medical advice. Grades and scores reflect published evidence weighted by study design and quality; see the methodology.