The effect of cinnamon on A1C among adolescents with type 1 diabetes.

OBJECTIVE The purpose of this study was to determine the effect of cinnamon on glycemic control in adolescents with type 1 diabetes. RESEARCH DESIGN AND METHODS Using a prospective, double-blind, placebo-controlled design, 72 adolescent type 1 diabetic subjects were treated in an outpatient setting with cinnamon (1 g/day) or an equivalent-appearing placebo for 90 days. A1C, total daily insulin intake, and adverse events were recorded and compared between groups. RESULTS There were no significant differences in final A1C (8.8 vs. 8.7, P = 0.88), change in A1C (0.3 vs. 0.0, P = 0.13), total daily insulin intake, or number of hypoglycemic episodes between the cinnamon and placebo arms. CONCLUSIONS Cinnamon is not effective for improving glycemic control in adolescents with type 1 diabetes.