Metabolic & Cardiometabolic
inulin decreases insulin resistance
Part of: 🧪 inulin-type fructans
📅 Last reviewed: 2026-07-15 ⓘ
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: All trials, pooled (Meta-analysis)
How the studies fall
What the evidence shows
Prebiotic / inulin-type fibre improves glycemia and insulin resistance.
The evidence (6)
| Source | Grade | Stance | Quality | Finding |
|---|---|---|---|---|
| inulin-t2d-2019 2019 | meta-analysis | supports | moderate | Inulin-type fructans ↓FPG/HbA1c/HOMA-IR dose-dependently (33 RCTs). |
| Zuccotti G et al 2026 · study_type: meta-analysis | meta-analysis | tested-null | low | NMA (PRISMA-NMA, PROSPERO-registered) in children/adults w/ overweight/obesity. Inulin arm: 'modest or non-significant effects on most outcomes' incl. HOMA-IR/glucose; L-carnitine (not inulin) was the effective agent. |
| Iino C et al 2026 · study_type: RCT | RCT | mixed | moderate | 12wk DB-RCT, adults w/ visceral obesity (n=91). Catechin 400mg+inulin 2.3g/d vs placebo. HOMA-IR: -0.32 vs +0.18 (p=0.020). VFA, other secondary markers NS. Inulin dose low, confounded by catechin. |
| Juhasz 2023 · Am J Clin Nutr | meta-analysis | supports | high | Network MA in T2D: inulin-type and other soluble fibers improve fasting glucose, HbA1c and HOMA-IR |
| inulin-t2d-2020 2020 | meta-analysis | supports | moderate | Inulin ↓FPG SMD -0.55, ↓HOMA-IR (9 RCTs). |
| Chen S et al 2026 · study_type: meta-analysis | meta-analysis | supports | moderate | MA of 13 RCTs (952 participants), resistant dextrin vs control. FBG: WMD -0.15 mmol/L (95%CI -0.30,-0.00; p=.049; I2=77.5%). HOMA-IR: WMD -0.51 (95%CI -0.93,-0.09; p=.02; I2=25%, 7 trials/332). FBI NS; HbA1c borderline NS (p=.07). Benefit g |
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.