INS and type 2 diabetes mellitus: Furthermore, an updated systematic review and dose-response meta-analysis of clinical trials reported that consuming cinnamon significantly reduced the levels of FBS (standard mean difference (SMD: −1.32; 95% CI: −1.77, −0.87)), homeostatic model assessment for insulin resistance (SMD: −1.32; 95% CI: −1.77, −0.87), and HbA1c (SMD: −0.67; 95% CI: −1.18, −0.15) in patients with T2D.