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NEW YORK, August 29, 2025 – A daily dose of turmeric-or, more specifically, its active compound curcumin-may offer a small but meaningful dip in systolic blood pressure, particularly for those already grappling with prediabetes or Type 2 diabetes. That’s the key finding from a new meta-analysis of 15 randomized controlled trials.
Curcumin and Blood Pressure: A Natural Boost?
Could a common spice help manage hypertension alongside conventional treatments? New research suggests curcumin may play a role.
- Curcumin supplementation was linked to an average reduction of 2.69 mmHg in systolic blood pressure.
- The blood pressure-lowering effect was more noticeable in individuals with existing hypertension, showing a 3.41 mmHg decrease.
- Nano-curcumin formulations, turmeric itself, and curcumin combined with piperine (at doses over 1 gram daily) appeared most effective.
- The analysis of 855 participants revealed no major safety concerns associated with curcumin or turmeric supplementation.
High blood pressure is a frequent and serious complication of prediabetes and Type 2 diabetes, substantially elevating the risk of cardiovascular problems. While standard medications remain the cornerstone of treatment, growing interest surrounds nutritional strategies that could address underlying inflammation and oxidative stress.Curcumin has long been touted for its anti-inflammatory and antioxidant properties, but until now, its impact on blood pressure in those with impaired glucose metabolism has been unclear.
How the Research Was Conducted
Researchers systematically reviewed and analyzed data from 15 randomized controlled trials involving a total of 855 adults with prediabetes or Type 2 diabetes. The studies, identified through searches of PubMed, Scopus, and Web of Science up to August 2025, evaluated the effects of curcumin or turmeric supplementation. A random-effects model was employed to account for
