Ceylon cinnamon, or "true" cinnamon ... Nutrition found that people who ingested Indonesian cinnamon (Cinnamomum burmannii) for two weeks had lower glucose levels than people who took a placebo.

Ceylon cinnamon is named after the old British name for Sri Lanka, and it is often considered "real" cinnamon. It is made from the dried inner bark of a tree called Cinnamomum verum. Growing these ...