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Evidence-Based Supplement Research
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Black Cumin and Improved Insulin Sensitivity

Research synthesisModerate evidenceMixed effect size4 studies · 4 beneficial · 0 neutral · 0 harmful

Across 4 studies, all reported beneficial effects on insulin sensitivity, with effect sizes ranging from small to moderate (mixed). The strongest evidence comes from a 2025 meta-analysis of 82 randomized controlled trials involving 5,026 participants. No consistent dose range or form was identified across studies, and the median reported study duration was only 7 days.

  • Studied populations: general population (meta-analysis) and individuals with type 2 diabetes

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). Additionally, study durations were rarely reported; the one study that did report duration lasted only 7 days, which may be insufficient for observing meaningful changes in insulin sensitivity. The dose range (200–4600 mg/day) reported in the meta-analysis is very broad, making it difficult to identify an optimal dose.

Generated Jul 4, 2026
Doses used in studies
  • mg/day: 200–4,600 (median 2,400, IQR 200–4,600) — 1 study
Time to effect
Median: 7 days · IQR 7 days–7 days · Range 7 days–7 days — Reported in 1 of 4 studies
Safety in these studies
4 of 4 papers
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