Health Canada's evaluation of the use of glycemic index claims on food ... meta-analysis TMS Wolever1,2,3, JL Giddens4 and JL Sievenpiper1,3 OBJECTIVES: Low glycaemic index (GI) foods are recommended to improve glycaemic control in diabetes; however, Health Canada considers that GI food labeling would be misleading and unhelpful, in part, because selected studies suggest that GI values are inaccurate due to an effect of ethnicity.