Main menu


Does cinnamon harm the liver?

 You may have heard about the many benefits of cinnamon, but what are the effects of cinnamon on the liver and other parts of the body?

In the following article, we will introduce you to the damages of cinnamon on the liver and important information on this topic:

Cinnamon damages the liver

Cinnamon can affect the liver because it contains coumarin, a substance found in the blood-thinning medicine warfarin.

A teaspoon of 2.6 grams of ground Cassia cinnamon contains 7-18 milligrams of coumarin, and the permissible daily limit of coumarin is about 0.1 milligrams / kilogram of body weight, this means that just a teaspoon of cassia cinnamon can make you exceed Daily allowable limit of coumarin.

This substance has a harmful effect on the liver, as many studies have found that eating a lot of coumarin may cause toxicity and damage to the liver, as coumarin has the ability to cause liver toxicity in humans when it is taken in high doses.

Coumarin in some cases caused an increase in liver enzymes above the normal range, even though they returned to their normal rates after stopping it.

Cinnamon supplements and liver damage

In one study, acute hepatitis was reported from taking herbal supplements containing a high amount of cinnamon.

A 40-year-old man took two herbal supplements containing cinnamon and fennel, and after about 4 months of taking these supplements, he developed jaundice, increased clotting time, increased liver enzymes and total bilirubin.

Other harmful effects of cinnamon

Consuming cinnamon incorrectly is not only limited to the liver, but there are other harmful effects of cinnamon, including:

1. It increases the risk of developing cancer

Studies in animals such as rodents have shown that eating too much coumarin might increase the risk of some types of cancer in the lungs, liver, and kidneys.

But more human research needs to be done to see if the same relationship between coumarin and cancer applies to humans as well.

2. Causes mouth ulcers

Cinnamon contains cinnamaldehyde, a compound that may cause an allergic reaction when consumed in large quantities in some people, and in addition to mouth ulcers, other symptoms of cinnamaldehyde allergy include the following:

Swelling of the tongue or gums.

A burning or itching sensation in the mouth.

The appearance of white spots in the mouth.

3. It causes low blood sugar

Cinnamon is known to lower blood sugar, but eating too much cinnamon can lead to too much sugar hypoglycemia, which may lead to fatigue, dizziness, and possibly fainting.

Therefore, people who take diabetes medication should be careful not to eat large amounts of cinnamon.

4. It causes breathing problems

Ground cinnamon has a soft texture that makes it easy to accidentally inhale it, which can cause:


Difficulty swallowing and reflux.

Difficulty trying to catch oneself.

The cinnamaldehyde in cinnamon is also a throat irritant, so people with asthma or other respiratory problems should be careful not to inhale cinnamon.

Cinnamon Benefits

Although cinnamon has liver damages, this does not negate the idea that cinnamon has many health benefits in several areas, including:

Reducing blood sugar.

Reducing cholesterol in the blood.

Possessing anti-bacterial properties.

A role in cases of tooth decay.