The effect of cinnamon supplementation on blood pressure in adults: A systematic review and meta-analysis of randomized controlled trials
Hadi A, Campbell MS, Hassani B, Pourmasoumi M, Salehi-sahlabadi A, Hosseini SA · Clinical Nutrition ESPEN · 2020 April
DOI 10.1016/j.clnesp.2020.01.002
Objective
Aim for this systematic review and meta-analysis is to provide a more precise estimate of the overall effects of cinnamon supplementation on blood pressure in adults.
Conclusions
The present meta-analysis suggests that cinnamon supplementation can improve blood pressure.
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Insights
Cinnamon supplementation can improve blood pressure by a modest degree.
Meta-analysis of 9 RCTs with 641 participants showed significant reductions in both systolic (WMD: −5.17 mmHg, 95% CI: −9.35 to −0.99, P = 0.01) and diastolic blood pressure (WMD: −3.36 mmHg, 95% CI: −5.67 to −1.04, P ≤ 0.001) after cinnamon supplementation. Subgroup analyses indicated that these results were significant only when cinnamon was administered at the dosages of ≤2 g/day, for a period longer than 8 weeks, and in participants with a baseline BMI of ≥30 kg/m2.
