Cassia cinnamon does not change the insulin sensitivity or the liver enzymes in subjects with impaired glucose tolerance.

Summary, in English

Published studies have reported conflicting results regarding the effects of cinnamon on glucose, lipids and insulin. To gain further insight into the metabolic effects of Cinnamomum cassia we performed randomized, double-blinded placebo-controlled study using euglycaemic-hyperinsulinaemic clamp.