Technical Abstract: OBJECTIVE – To determine if meta-analysis of recent clinical studies of cinnamon intake by people with Type II diabetes and/or prediabetes resulted in significant changes in fasting blood glucose. RESEARCH DESIGN AND METHODS -- Published clinical studies were identified using a literature search (Pub Med, Biosis through June 2010) of randomized, placebo-controlled trials reporting data on cinnamon and/or cinnamon extract and fasting blood glucose. A meta-analysis was performed using a random-effects model that determined the standardized mean difference, i.e. Change 1(control)- Change 2(cinnamon) divided by the pooled SD of the post scores. RESULTS -- The meta-analysis of eight prospective randomized controlled trials showed that consuming cinnamon or as cinnamon extract only, produces a statistically significant lowering in fasting plasma glucose - 0.49 ± 0.2 mM/L (8.77 ±3.52 mg/dl); all studies (N=8, p=0.025) and -0.48mM/L ± 0.17 ( 8.7 ±3.10 mg/dl); Cinnamon extract only (N=5, p=0.008)) CONCLUSIONS – Cinnamon extract and/or cinnamon improves fasting plasma glucose in people with type II diabetes or prediabetes.