There are many species of Cinnamon that are used around the world. The ones we are most familiar with come from China (Cassia cinnamon) and Saigon Cinnamon from Vietnam.
Cinnamon bark may help prevent and treat diabetes. The studies done on cinnamon have shown that it helps to reduce your blood sugar levels but there has not been any evidence that it can lower your A1C levels, which is a better indicator of your diabetes status than blood sugar alone. Right now there is no consensus on whether cinnamon can help reverse insulin resistance, which is linked with diabetes.
Oxygen Radical Absorbance Capacity (ORAC)
ORAC is a standard method for measuring the amount of antioxidants a particular food has. Cinnamon has one of the highest ORAC scores of all the foods we eat. In addition, In addition, some of these are powerful antioxidants like eugenol.
Cinnamon, particularly the Cassia varieties, contains high levels of coumarin, which is a compound in cinnamon that acts as a blood thinner. Powdered cinnamon contains much more coumarin per gram than cinnamon sticks so be especially careful when eating the powered form because you are consuming more cinnamon than you think. The high levels of coumarin may enhance blood thinning medication (like Aspirin or Plavix) that you may be taking.
Cinnamon can also prevent your body from overproducing nitric oxide, which can happen when you are sick or possibly when a tumor may be trying to develop in your body.