
Summary While eating cinnamon may help lower This is because cinnamon may enhance the effects of these medications and cause your blood sugar to fall too low. People who are most at risk of experiencing low blood sugar are those taking medications for diabetes. It can lead to tiredness, dizziness, and possibly fainting ( 20). While eating a bit of cinnamon may help lower your blood sugar, eating too much may cause it to fall too low. Studies have found that the spice can mimic the effects of insulin, a hormone that helps remove sugar from the blood ( 17, 18, 19). If left untreated, it may lead to diabetes, heart disease, and many other health problems ( 16).Ĭinnamon is well-known for its ability to lower blood sugar. Having chronic high blood sugar is a health problem. These products contain more cinnamaldehyde. Seems to mostly affect people who use too much cinnamon oil or chewing gum, as In cinnamon called cinnamaldehyde, which can cause mouth sores. Summary Some people are allergic to a compound
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You can get tested for this type of allergy with a skin patch test ( 15).Īlso, mouth sores seem to mostly affect those who use too much cinnamon oil and cinnamon-flavored chewing gums, as these products can contain more cinnamaldehyde. However, it’s important to note that cinnamaldehyde will only cause mouth sores if you’re allergic to it. 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). Cassia (or regular) cinnamon is a rich source of coumarin.
