Cinnamon is derived from the inner bark of cinnamonium trees native to Sri Lanka. It has many medicinal properties including antioxidant, anti-clotting, relief of respiratory problems, arthritis, and inflammation. The document discusses two studies on cinnamon - one showing that cinnamon supplements improved blood glucose control in Chinese patients with type 2 diabetes, and another finding cinnamon altered body composition and improved insulin sensitivity in an animal model of metabolic syndrome induced by a high fat/high fructose diet. Side effects are also noted.