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Evidence-Based Supplement Research
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New evidence

Curcumin linked to a 22-point drop in fasting glucose in obese adults with type 2 diabetes, in a year-long trial

This is one of the first randomized trials to show a large, sustained drop in fasting blood sugar from curcumin in this specific population, but it's a single study with 114 people, so we'd want to see it replicated before getting too excited.

Over 12 months, obese adults with type 2 diabetes who took 1,500 mg/day of curcumin saw their average fasting blood sugar fall from about 134.5 mg/dL to 112.0 mg/dL — a roughly 22-point drop that was statistically significant. The study also noted improvements in inflammation and antioxidant markers, but the main caveat is that this is early evidence and the effect might not hold up in larger or more diverse trials.

Where this fits in the evidence

This is among the first studies we've indexed on Turmeric for Improved Fasting Plasma Glucose — treat it as an early signal until more research accumulates.

The study

Curcumin Supplementation Reduces Inflammation, Neutrophil-to-Lymphocyte Ratio (NLR), and Antioxidant Status in Obese Patients with Type 2 Diabetes: A Randomized Controlled Trial.

  • Randomized Controlled Trial (RCT)
  • n = 114
  • 2026-04-27
  • International journal of molecular sciences
More on TurmericMore on Improved Fasting Plasma Glucose

This is a plain-language summary of a research finding, not medical advice. Pillser surfaces research signals to help you decide what's worth investigating — always consult a qualified professional before changing what you take.

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