In a meta-analysis of 10 studies in patients with type 2 diabetes, consumption of cinnamon supplements improved fasting blood glucose and cholesterol levels, but not HbA1c levels. The report is published in the Annals of Family Medicine.

Small doses of cinnamon supplement could be used in association with traditional diabetes medication.

Cinnamomum cassia was the most common form of cinnamon studied in the trials.

The effect of cinnamon could be attributed to its active component cinnamaldehyde.

The advantages of cinnamon include its cost, tolerability and safety profile.

Long-term administration of high-dose cinnamon may be unsafe since its coumarin content has been tied to liver damage in animal studies.