Effect of cinnamon supplementation on blood pressure, oxidative stress, and inflammatory biomarkers in adults: An umbrella review of the meta-analyses of randomized controlled trials.

Aims: Cinnamon has positive effects on markers of cardiometabolic health, including blood pressure (BP), oxidative stress, and inflammation. Despite the evidence accumulated from meta-analysis studies on the effects of cinnamon on these markers, the reported findings are still controversial. This umbrella review was conducted to evaluate the evidence and provide a definitive clarification.