Gut microbiota interventions may improve glucose and cardiometabolic markers in type 2 diabetes
Key takeaway:
This systematic review found that microbiota-directed strategies, including probiotics, personalized nutrition, and diet changes, were often linked with better glycemic and cardiometabolic markers, but study methods and results varied across trials.
Study at a glance
What was studied
A systematic review of gut microbiota-directed interventions and metabolic outcomes in adults with type 2 diabetes.
Study type
Systematic Review
duration
Medium-Term (3–12 mo)
Intervention
Probiotics
Outcomes
HbA1c, Insulin resistance, LDL cholesterol
Funding
Non-industry sponsored
Main effects
HbA1c ↓ in several included intervention trials
Insulin resistance ↓ in multiple microbiota-targeted strategies
Cardiometabolic markers (lipids, blood pressure, CRP) often improved
Evidence Summary
| Intervention | Outcome | Measured Change | Study Effect |
|---|---|---|---|
 Probiotics (Supplements) |  HbA1c (Glycemic Control) | Decrease | Mixed |
Probiotics (Supplements) |  Insulin resistance (Metabolic Health) | Decrease | Mixed |
Probiotics (Supplements) | LDL cholesterol (Metabolic Health) | Decrease | Mixed |
Unlock Full Evidence Analysis
Create a free account to access effectiveness ratings, evidence strength and depth scores, consistency analysis, and direct links to all supporting studies.
Evidence Suggest
- Several trials reported better glycemic and insulin sensitivity markers after microbiota-directed interventions.
- Some studies found stronger effects with combined or personalized strategies than with standard comparators.
- Outcome variability across studies limits confidence in a single effect size.
Who this applies to
Adults with type 2 diabetes
Keep in Mind
This is a review-level synthesis, not one primary intervention trial.
Between the Lines
- No pooled meta-analysis due to heterogeneity
- Many included trials were short-term
- Several studies had small sample sizes
- Interventions and measured outcomes varied substantially
Unlock Full Analysis
Create a free account to unlock the bias score, detailed effectiveness analysis, and clinical outcomes for this study.
Journal Reference
Ur Rehman M, Saeed H, Omer O, Tashfeen S. Gut Microbiota-Directed Interventions in Type 2 Diabetes: A Systematic Review of Clinical Outcomes and Complication Risk. Cureus. 2025;17(10):e95045. doi:10.7759/cureus.95045
Connected Evidence
Discover how this study fits into the broader diabetes evidence landscape.
This study contributes to evidence on Probiotics and HbA1c, Probiotics and Insulin resistance.
Related evidence relationships
Explore in Evidence ArchiveThis study contributes to the evidence on the following intervention–outcome relationships.
Included in these evidence collections
Curated evidence collections and hubs this study is part of.
HbA1c Evidence Hub
All studies measuring HbA1c
Measures HbA1c as a key outcome.
Probiotics Evidence Hub
All studies on Probiotics
Contributes to Probiotics evidence base.
Insulin resistance Evidence Hub
All studies measuring Insulin resistance
Measures Insulin resistance as a key outcome.
Explore more in the evidence archive
Jump to pre-filtered views in the evidence archive.
All studies on Probiotics and HbA1c
3 results
All studies on Probiotics and Insulin resistance
2 results
All studies on Probiotics
3 results
All studies measuring HbA1c
3 results
All studies measuring Insulin resistance
2 results
Questions this evidence helps answer
Key clinical and research questions this study contributes to.
No ads. No tracking.
Focused on evidence, not advertising.
Secure & private
Your data is always protected.
Always up to date
New studies added every day.