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How Cinnamon Lowers Blood Sugar and Fights Diabetes

01 Apr How Cinnamon Lowers Blood Sugar and Fights Diabetes
Публикувано от admin1 0 Коментар(и) 5840 Преглед(и)

https://www.healthline.com/nutrition/cinnamon-and-diabetes


How Cinnamon Lowers Blood Sugar and Fights Diabetes

Diabetes is a disease characterized by abnormally high blood sugar.

If poorly controlled, it can lead to complications like heart disease, kidney disease and nerve damage (1).

Treatment often includes medications and insulin injections, but many people are also interested in foods that can help lower blood sugar.

One such example is cinnamon, a commonly used spice that’s added to sweet and savory dishes around the world.

It provides many health benefits, including the ability to lower blood sugar and help manage diabetes.

This article tells you everything you need to know about cinnamon and its effects on blood sugar control and diabetes.

Cinnamon is an aromatic spice derived from the bark of several species of Cinnamomum trees.

While you may associate cinnamon with rolls or breakfast cereals, it has actually been used for thousands of years in traditional medicine and food preservation.

To obtain cinnamon, the inner bark of Cinnamomum trees must be removed.

The bark then undergoes a drying process that causes it to curl up and yield cinnamon sticks, or quills, which can be further processed into powdered cinnamon.

Several different varieties of cinnamon are sold in the US, and they are typically categorized by two different types:

  • Ceylon: Also called “true cinnamon,” it’s the most expensive type.
  • Cassia: Less expensive and found in most food products containing cinnamon.

While both types are sold as cinnamon, there are important differences between the two, which will be discussed later in this article.

A quick glance at cinnamon’s nutrition facts may not lead you to believe that it’s a superfood (2).

But while it doesn’t contain a lot of vitamins or minerals, it does contain large amounts of antioxidants, which give it its health benefits.

In fact, one group of scientists compared the antioxidant content of 26 different herbs and spices and concluded that cinnamon had the second highest amount of antioxidants among them (after cloves) (3Trusted Source).

Antioxidants are important because they help the body reduce oxidative stress, a type of damage to cells, which is caused by free radicals.

One study showed that consuming 500 mg of cinnamon extract daily for 12 weeks decreased a marker of oxidative stress by 14% in adults with prediabetes (4Trusted Source).

This is significant, since oxidative stress has been implicated in the development of nearly every chronic disease, including type 2 diabetes (5Trusted Source).

It Can Imitate Insulin and Increase Insulin Sensitivity

In those with diabetes, either the pancreas cannot produce enough insulin or cells do not respond to insulin properly, leading to high blood sugar levels.

Cinnamon may help lower blood sugar and fight diabetes by imitating the effects of insulin and increasing glucose transport into cells (6Trusted Source).

It can also help lower blood sugar by increasing insulin sensitivity, making insulin more efficient at moving glucose into cells.

One study of seven men showed taking cinnamon increased insulin sensitivity immediately after consumption, with the effect lasting at least 12 hours (7Trusted Source).


Several controlled studies have demonstrated that cinnamon is excellent at reducing fasting blood sugar.

One review of 543 people with type 2 diabetes found taking it was associated with an average decrease of over 24 mg/dL (1.33 mmol/L) (9Trusted Source).

While these study results are pretty clear, studies investigating its effects on hemoglobin A1c, a measure of long-term blood sugar control, have yielded conflicting results.

Some studies report significant decreases in hemoglobin A1c, while others report no effect (9Trusted Source10Trusted Source11Trusted Source12Trusted Source).

The conflicting results may be partially explained by differences in the amount of cinnamon given and prior blood sugar control of participants (9Trusted Source13Trusted Source).

Depending on the size of the meal and how many carbs it contains, blood sugar levels can rise pretty dramatically after you eat.

These blood sugar fluctuations can increase levels of oxidative stress and inflammation, which tend to do a lot of damage to your body’s cells and put you at risk of chronic disease (14Trusted Source15Trusted Source).

Cinnamon can help keep these blood sugar spikes after meals in check. Some researchers say it does this by slowing down the rate at which food empties out of your stomach.

One study found that consuming 1.2 teaspoons (6 grams) of cinnamon with a serving of rice pudding led to slower stomach emptying and lower blood sugar elevations then eating rice pudding without it (16Trusted Source).

Other studies suggest that it may lower blood sugar following meals by blocking digestive enzymes that break down carbs in the small intestine (17Trusted Source18Trusted Source).


This spice does more than lower fasting blood sugar and decrease blood sugar spikes following meals.

It may also lower the risk of common diabetes complications.

People with diabetes have twice the risk of heart disease as people without it. Cinnamon may help lower this risk by improving established risk factors for heart disease (19Trusted Source).

A review of controlled studies in people with type 2 diabetes found that taking cinnamon was associated with an average decrease in “bad” LDL cholesterol of 9.4 mg/dL (0.24 mmol/L) and a decrease in triglycerides of 29.6 mg/dL (0.33 mmol/L) (9Trusted Source).

It also reported an average 1.7 mg/dL (0.044 mmol/L) increase in “good” HDL cholesterol (9Trusted Source).

Furthermore, another study found that supplementing with two grams of cinnamon for 12 weeks significantly lowered both systolic and diastolic blood pressure (11Trusted Source).

Interestingly, diabetes has also been increasingly implicated in the development of Alzheimer’s disease and other dementias, with many people now referring to Alzheimer’s disease as “type 3 diabetes” (20Trusted Source).

Studies suggest that cinnamon extract may decrease the ability of two proteins — beta-amyloid and tau — to form plaques and tangles, which are routinely linked to the development of Alzheimer’s disease (21Trusted Source22Trusted Source).

However, this research has only been completed in test tubes and animals. Further studies in humans are needed to confirm these findings.


Cinnamon is typically grouped into two different types — Ceylon and Cassia.

Cassia cinnamon can be derived from a few different species of Cinnamomum trees. It’s generally inexpensive and is found in most food products and the spice aisle of your grocery store.

Ceylon cinnamon, on the other hand, is specifically derived from the Cinnamomum verum tree. It’s typically more expensive and is less common than Cassia, but studies have shown that Ceylon cinnamon contains more antioxidants (3Trusted Source).

Because it contains more antioxidants, it’s possible that Ceylon cinnamon may provide more health benefits.

Nevertheless, although several animal and test-tube studies have highlighted the benefits of Ceylon cinnamon, most studies demonstrating health benefits in humans have used the Cassia variety (23Trusted Source).

Cassia cinnamon is not only lower in antioxidants, it’s also high in a potentially harmful substance called coumarin, an organic substance found in many plants.

Several studies in rats have shown coumarin can be toxic to the liver, leading to concern that it can cause liver damage in humans as well (24Trusted Source).

Accordingly, the European Food Safety AuthorityTrusted Source has set the tolerable daily intake for coumarin at 0.045 mg per pound (0.1 mg/kg).

Using average coumarin levels for Cassia cinnamon, this would be equivalent to about a half teaspoon (2.5 grams) of Cassia cinnamon per day for a 165-pound (75-kg) individual.

As you can see, Cassia cinnamon is particularly high in coumarin, and you can easily consume more than the upper limit by taking Cassia cinnamon supplements or even eating large amounts of it in foods.

However, Ceylon cinnamon contains much lower amounts of coumarin, and it would be difficult to consume more than the recommended amount of coumarin with this type (25Trusted Source).

Additionally, people with diabetes who take medications or insulin should be careful when adding cinnamon to their daily routine.

The addition of cinnamon on top of your current treatment may put you at risk of low blood sugar, which is known as hypoglycemia.

Hypoglycemia is a potentially life-threatening condition, and it is recommended to talk to your doctor about incorporating cinnamon into your diabetes management.

Lastly, children, pregnant women and others with extensive medical histories should speak with their doctors to see if the benefits of cinnamon outweigh the risks.


Cinnamon’s benefits for lowering blood sugar have been well-studied.

Yet despite this, no consensus has been reached regarding how much you should consume to reap the benefits while avoiding potential risks.

Studies have typically used 1–6 grams per day, either as a supplement or powder added to foods.

One study reported that the blood sugar of people taking either 1, 3 or 6 grams daily all decreased by the same amount (26).

Given that people on the smallest dose saw the same benefit as those on the largest dose, there may be no need to take large doses.

Additionally, a number of studies have shown that the coumarin content of Cassia cinnamon can vary. Therefore, it would be wise not to exceed 0.5–1 grams of it per day to avoid surpassing the tolerable daily intake of coumarin.

Much less caution can be taken with Ceylon cinnamon. Consuming up to 1.2 teaspoons (6 grams) daily should be safe as far as coumarin content is concerned.




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