Curcumin review finds a modest systolic blood pressure reduction
Trials in adults with prediabetes or type 2 diabetes found lower systolic pressure with supplementation, while the overall diastolic result was not statistically significant.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
Supplementation produced a modest average reduction in systolic blood pressure, the study's clearest overall result. The pooled diastolic estimate was uncertain and did not reach statistical significance. These findings apply to adults with prediabetes or diabetes in the included trials; they do not establish that supplementation prevents cardiovascular events or identify an optimal dose.
This abstract-based summary lacks treatment durations and details of the control regimens. Diastolic findings varied substantially across studies, and subgroup results do not establish that a particular formulation or dose is superior.
What researchers found
Systolic blood pressure
Weighted mean difference versus control groups; treatment durations were not reported in the abstract.
The overall results differed
The review assessed systolic and diastolic pressure separately. Although the average diastolic estimate favored supplementation, its confidence interval included no difference, leaving uncertainty about whether supplementation meaningfully changes that measure.
Subgroups need careful interpretation
The authors also examined subgroups based on initial blood pressure, diagnosis, weight, formulation, and dose. Significant findings within some subgroups do not demonstrate that those groups benefited more than others in a direct comparison.
The original publication
Antihypertensive Effects of Curcumin/Turmeric Supplementation in Prediabetes and Diabetes: A Systematic Review and Meta-Analysis of Randomised Controlled Trials.
Bahari H, Sharifi M, Nejad Shahrokh Abadi Z et al.
Endocrinol Diabetes Metab · 2026
- PubMed ID
- 41388744
- Record checked
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