Coumarin in cinnamon

The poisonous substance coumarin is present in the cinnamon varieties C. cassia, C. loureiroi, and C. burmannii. These types of cinnamon are often available at grocery shops.

Coumarin has been linked to a higher risk of cancer and liver damage at high doses. However, until you test your cinnamon, it's hard to determine how much coumarin it contains. If you regularly consume cinnamon, you should be aware that one research revealed that children who regularly sprinkled cinnamon on their oatmeal may have unsafe levels of coumarin intake. If you want to stay away from coumarin, opt for Ceylon cinnamon, sometimes known as "true cinnamon," which comes from the Cinnamomum verum plant. It's more costly and difficult to get in stores (you might have to order it online), but it has significantly lower levels of coumarin.