Turmeric and Reduced Blood Pressure

Across 3 studies, 2 reported beneficial effects and 1 was neutral, with no harmful findings. The predominant effect size is mixed (small to moderate), with the largest effect (moderate) coming from a lower-quality review. Evidence primarily comes from clinical populations with type 2 diabetes or hyperglycemia; no consistent dose or form data are available, and study durations were not reported.

• Studied populations: people with type 2 diabetes or hyperglycemia; older or metabolically compromised populations

Caveats: Evidence base is small (only 3 studies) — conclusions should be considered preliminary. One of the two beneficial findings is from a narrative review (evidence score 2), while the higher-quality meta-analysis (score 4) found no significant effect on blood pressure. Effect sizes are mixed (small to moderate) and the single neutral study is a comprehensive meta-analysis of 63 RCTs, which tempers confidence in the beneficial signal.