It's not yet clear if cinnamon is good fordiabetes. Research findings have been mixed, and the American Diabetes Association dismisses cinnamon’s use indiabetes treatment.
Several small studies have linked cinnamon to better blood sugar levels. Some of this work shows it may curb blood sugar by lowering insulin resistance.
In one study, volunteers ate from 1 to 6 grams of cinnamon for 40 days. (One gram of ground cinnamon is about half a teaspoon.) The researchers found that cinnamon cut cholesterol by about 18% and blood sugar levels by 24%. But in other studies, the spice did not lower blood sugar or cholesterol levels.