Look at this study - the numbers are very significant. Although, I'm
wondering if the effect is only on type 2 diabetics - but on the other hand
I don't see why it would be...

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_ui
ds=14633804&dopt=Abstract

Cinnamon improves glucose and lipids of people with type 2 diabetes.

Khan A, Safdar M, Ali Khan MM, Khattak KN, Anderson RA.

Department of Human Nutrition, NWFP Agricultural University, Peshawar, Pakistan.

OBJECTIVE: The objective of this study was to determine whether cinnamon
improves blood glucose, triglyceride, total cholesterol, HDL cholesterol,
and LDL cholesterol levels in people with type 2 diabetes. RESEARCH DESIGN
AND METHODS: A total of 60 people with type 2 diabetes, 30 men and 30 women
aged 52.2 +/- 6.32 years, were divided randomly into six groups. Groups 1,
2, and 3 consumed 1, 3, or 6 g of cinnamon daily, respectively, and groups
4, 5, and 6 were given placebo capsules corresponding to the number of
capsules consumed for the three levels of cinnamon. The cinnamon was
consumed for 40 days followed by a 20-day washout period. RESULTS: After 40
days, all three levels of cinnamon reduced the mean fasting serum glucose
(18-29%), triglyceride (23-30%), LDL cholesterol (7-27%), and total
cholesterol (12-26%) levels; no significant changes were noted in the
placebo groups. Changes in HDL cholesterol were not significant.
CONCLUSIONS: The results of this study demonstrate that intake of 1, 3, or 6
g of cinnamon per day reduces serum glucose, triglyceride, LDL cholesterol,
and total cholesterol in people with type 2 diabetes and suggest that the
inclusion of cinnamon in the diet of people with type 2 diabetes will reduce
risk factors associated with diabetes and cardiovascular diseases.

Marilyn