Research Summary
Raw cinnamon reduces post-meal glucose spikes in diabetes
Moderate confidence
Low bias
Last updated June 14, 2026Key Takeaway:
This study investigated the acute effects of raw cinnamon on post-meal glucose spikes in type 2 diabetes patients, finding that cinnamon in water reduced glucose spikes while capsules did not.
Study at a Glance
Participants
Intervention
Raw cinnamon powder dissolved in water, Raw cinnamon in hard gelatin capsules, Control (No cinnamon)
Outcomes
Postprandial blood glucose, Incremental Area Under the Curve (iAUC)
Funding
Non-Industry Sponsored
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Main Effects
Cinnamon dissolved in water decreased postprandial blood glucose by 79 mg/dL.
Cinnamon intake flattened the glycemic curve, leading to a lower iAUC.
Cinnamon capsules did not show significant anti-hyperglycemic effects.
The control group exhibited typical postprandial hyperglycemia.
Evidence Summary
| Intervention | Outcome | Measured Change | Study Effect |
|---|---|---|---|
Control (No cinnamon) (Control) |  Postprandial blood glucose (Glycemic Control) | No Change | Unclear |
 Raw cinnamon capsules (Supplements) | Postprandial blood glucose (Glycemic Control) | No Change | Unclear |
Raw cinnamon powder (Supplements) | Glucose iAUC (OGTT) (Glycemic Control) | Decrease | Strong |
Raw cinnamon powder (Supplements) | Postprandial blood glucose (Glycemic Control) | Decrease | Strong |
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Evidence Suggest
- Cinnamon in water reduced blood glucose spikes by 79 mg/dL.
- Cinnamon capsules did not maintain the blood sugar-lowering effects.
- Control group showed standard post-meal glucose levels.
Who this applies to
- Adults diagnosed with type 2 diabetes.
- Individuals interested in dietary interventions for blood sugar management.
Keep in Mind
- Results may not apply to all forms of cinnamon or different populations.
- Further research is needed to confirm findings and explore mechanisms.
- The study did not assess long-term effects of cinnamon consumption.
Between the Lines
- Unclear effectiveness of interventions due to lack of statistical significance.
- Limited generalizability due to specific participant characteristics.
- Potential confounding factors not accounted for in the study design.
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Journal Reference
Fernanda DM, Caio EGR, Andrea DG, Daniel CM, Alexis FW, Dured D. Acute effect of raw cinnamon on post-meal glucose spikes in patients with type 2 diabetes. PLOS ONE. 2024;19(10):e0311501. doi:10.1371/journal.pone.0311501
Connected Evidence
Discover how this study fits into the broader diabetes evidence landscape.
This study contributes to evidence on Botanical Supplements and Glycemic Control, Botanical Supplements and Glycemic Control.
Related evidence relationships
Explore in Evidence ArchiveThis study contributes to the evidence on the following intervention–outcome relationships.
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Curated evidence collections and hubs this study is part of.
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Glycemic Control Evidence Hub
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