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Evidence-Based Supplement Research
Evidence-Based Supplement Research
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Turmeric and Reduced Fasting Blood Glucose Levels

Research synthesisHigh evidenceMixed effect size5 studies · 5 beneficial · 0 neutral · 0 harmful

Across 5 studies, all reported beneficial effects on reducing fasting blood glucose, with effect sizes ranging from small to large. The evidence includes multiple meta-analyses showing statistically significant reductions (e.g., MD = -11.48 mg/dL, MD = -6.30 mg/dL). Most studies focused on adults with type 2 diabetes or related metabolic conditions. Doses and forms were not consistently reported, so typical dosing cannot be determined.

  • Studied populations: adults with type 2 diabetes or hyperglycemia

Caveats: Available evidence is overwhelmingly positive — clinical literature in this area is subject to publication bias (null-result studies are less likely to be published or indexed). Effect sizes varied substantially across studies (MD ranging from -6.30 to -19.64 mg/dL), suggesting heterogeneity in the magnitude of benefit. Doses and forms of turmeric/curcumin were not consistently reported, making it difficult to recommend a specific regimen.

Generated Jul 13, 2026
Safety in these studies
5 of 5 papers
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