Therapeutic Uses 
Diabetes 
Cinnamon may be especially important to people with
 diabetes. Mainly the bark is used medicinally. A polyphenol 
compound—with the tongue[1]twisting
 name methylhydroxychalcone—is found in cassia cinnamon. It is this 
compound that may be responsible for cinnamon’s main medical benefit: 
lowering blood sugar in people with diabetes. The compound seems to 
affect insulin receptors and aid in the formation of glycogen, or stored
 sugar. Cinnamon also has antibacterial effects (from the essential oil)
 and antioxidant effects (from the polyphenols), the latter probably 
helping with some of the complications of diabetes. 
Cassia cinnamon has been studied in clinical 
trials, primarily by looking at fasting blood sugar levels in people 
with diabetes. Although one study found improvements in fasting blood 
sugar (as much as 29 percent in some cases) and cholesterol levels in 
people with type 2 diabetes, other studies have found no effect. It may 
be that cinnamon works better in people whose diabetes is poorly 
controlled, but there may be other factors, such as genetics and 
medications, that explain why sometimes cinnamon helps and other times 
it doesn’t. 
How to Use 
Powder: For diabetics, powdered cinnamon spice is 
an option—but for positive effects on blood sugar levels. it is 
necessary to use approximately 1 teaspoon daily. 
Precautions 
Cinnamon is well tolerated, though the volatile oil
 can cause a skin rash. Cassia and other cinnamons contain small amounts
 of coumarin; blood[1]thinning
 and liver problems generally occur with this compound only if large 
amounts are taken over long periods. To be safe, caution is advised for 
anyone with liver problems. Due to its blood-thinning effects, people 
should stop taking cinnamon in quantities greater than use as a spice at
 least one week prior to surgery. Medicinal doses are not recommended 
during pregnancy. Close monitoring of blood sugar levels in diabetics is
 warranted to avoid unsafe lowering of blood sugar