Cinnamon was first described as a possible treatment for diabetes in Diabetes Care in December 2003. Sixty patients with type 2 diabetes were given 1, 3, or 6 grams of cinnamon daily or a placebo.
They received cinnamon or a placebo for 40 days, and the levels of fasting glucose, LDL cholesterol, total cholesterol, and triglycerides were measured. All three amounts of cinnamon reduced all these measurements in patients with type 2 diabetes.
In 2006, an article in the European Journal of Clinical Investigation confirmed these findings. Seventy-six patients with type 2 diabetes were given 3 grams of cinnamon daily or a placebo. Cinnamon reduced the plasma glucose significantly more than the placebo. The higher the initial glucose, the more the cinnamon reduced it.
This result called for a study of patients with type 1 diabetes, which was published in Diabetes Care in April 2007.
Patients took 1 gram of cinnamon daily.
Unfortunately, the study didn’t show an improvement in hemoglobin A1c, total daily insulin usage, or the number of hypoglycemic reactions.
The bottom line as of this writing is that cinnamon isn’t useful for blood glucose control in patients with T1DM.
(Taken from the book entitled, “Type 1 Diabetes for Dummies,” 2008, Ch.12, Pg.211)
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