Insights & Discussion
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.
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Cinnamon supplementation leads to a significant reduction in both systolic and diastolic blood pressure in adults.
2019 Critical Reviews in Food Science and Nutrition Anti-hypertensive effects of cinnamon supplementation in adults: A systematic review and dose-response Meta-analysis of randomized controlled trials Seyed Mohammad Mousavi, Ahmad Jayedi, Yahya Jalilpiran, Maryam Hajishafiee, Azadeh Aminianfar, Ahmad Esmaillzadeh.
Systematic Review Anti-Hypertensive Chinese Cinnamon High Blood Pressure
This systematic review and meta-analysis included studies up to July 2019, sourced from databases like PubMed/Medline, Scopus, ISI Web of Science, Embase, and Google Scholar. The research focused on randomized clinical trials that primarily explored the effect of oral cinnamon supplementation on blood pressure parameters, including systolic or diastolic blood pressure.
From the 469 citations, nine trials involving 641 subjects were included. The results inferred that cinnamon supplementation leads to a noticeable decrease in both systolic and diastolic blood pressure. A more remarkable effect on systolic blood pressure was observed in trials using less or equal to 2g cinnamon, lasting for 12 weeks or more, and included participants under the age of 50. Diastolic blood pressure was also reduced using lower doses of cinnamon. No significant non-linear associations were detected between cinnamon supplementation dosage, study duration, and both systolic and diastolic blood pressure.