While these symptoms aren’t necessarily serious, they can cause discomfort ( 14). In addition to mouth sores, other symptoms of a cinnamaldehyde allergy include: Small amounts of the spice don’t seem to cause this reaction, as saliva prevents chemicals from staying in contact with the mouth for too long. Some people have experienced mouth sores from eating products that contain cinnamon flavoring agents ( 12, 13, 14).Ĭinnamon contains cinnamaldehyde, a compound that may trigger an allergic reaction when consumed in large amounts. Studies have shown that eating too much coumarin may increase the
Summary Regular cinnamon contains high amounts However, this case involved supplements that provided a higher dose than you would get from diet alone.
Unfortunately, several studies have found that eating too much coumarin may cause liver toxicity and damage ( 4, 5).įor example, a 73-year-old woman developed a sudden liver infection causing liver damage after taking cinnamon supplements for only 1 week ( 7). This means that just 1 teaspoon of Cassia cinnamon could put you over the daily limit ( 3). The tolerable daily intake of coumarin is approximately 0.05 mg/pound (0.1 mg/kg) of body weight, or 5 mg per day for a 130-pound (59-kg) person. The coumarin content of ground Cassia cinnamon may range from 7 to 18 milligrams per teaspoon (2.6 grams), while Ceylon cinnamon only contains trace amounts of coumarin ( 6). Here are 6 possible side effects of eating too much Cassia cinnamon.Ĭassia (or regular) cinnamon is a rich source of coumarin. Research has found that eating too much coumarin may harm your liver and increase the risk of cancer ( 3, 4, 5).įurthermore, eating too much Cassia cinnamon has been linked to many other side effects. While Cassia cinnamon is safe to eat in small to moderate amounts, eating too much may cause health problems because it contains high amounts of a compound called coumarin.
It’s widely popular and has been linked with health benefits like improved blood sugar control and lowering of some risk factors for heart disease ( 1, 2).Ĭinnamon, this is the most commonly used type.Ĭinnamon, Ceylon has a lighter and less bitter taste.Ĭassia cinnamon is more commonly found in supermarkets, given that it’s much cheaper than Ceylon cinnamon. If consumed in excess, cinnamon can cause side effects, including liver damage and allergic reactions.Ĭinnamon is a spice made from the inner bark of the Cinnamomum tree.
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