Dr. Anderson went on to run a series of experiments on cinnamon and cinnamon-related compounds in Pakistan. He also patented a form of cinnamon extract. Media coverage of some of his studies led to a burst of expensive cinnamon supplements appearing in drug and health food stores. However, most people who have tried them have not found lasting benefit. In a May 2007 newsletter, the editor of the PRESENT Diabetes points out that the small studies that found a favorable effect from cinnamon only measured fasting blood sugar. He also cites a more recent study, whose title says it all:
Cinnamon supplementation does not improve glycemic control in postmenopausal type 2 diabetes patients. Vanschoonbeek K et al., J Nutr. 2006 Apr;136(4):977-80.
This study included glucose tolerance tests in its assessment of the efficacy of cinnamon.
Yet another study, not done by someone with a financial stake in cinnamon as a diabetes treatment reinforces this finding. Cinnamon doesn't improve FBG, A1c or lipids.
Glucocil A Blood Sugar Optimizer™ | http://nationalfitnesspoint.com/glucocil/