Curcumin reviews found changes in blood sugar markers, with substantial uncertainty
A review of reviews reported lower glucose and some lipid measures in people with diabetes or high blood sugar. Several other metabolic outcomes did not show significant changes.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
Curcumin supplementation was linked to lower fasting glucose, glycated hemoglobin, and some lipid measures in the pooled trials. Significant changes were not found for total cholesterol, blood pressure, body mass index, or the reported kidney markers. These are metabolic measurements; the abstract does not establish fewer diabetes complications or long-term health benefits.
Results varied substantially between studies. The abstract does not specify comparison treatments or study durations, and the authors identify long-term effectiveness and safety as unresolved.
The formulation matters
The evidence concerns curcumin supplementation in people with diabetes or high blood sugar. The authors say the effectiveness of crude turmeric powder remains unexplored, so the findings should not be generalized to turmeric powder.
A mixed set of outcomes
The pattern was selective: some blood sugar and lipid measures improved, while other outcomes did not show significant changes. Nonsignificant findings leave uncertainty and should not be read as proof that no effect exists.
The original publication
Antidiabetic and Metabolic Effects of Turmeric (Curcuma Longa) in Patients with Type 2 Diabetes Mellitus or Hyperglycemia - A Systematic Meta-Review and Meta-Analysis.
Amgain K, Shah R, Md Noh SM et al.
J Nepal Health Res Counc · 2025
- PubMed ID
- 41319069
- Record checked
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