Other studies showed that cinnamon supplementation (Cinnamomum cassia, 1.5 g/day) failed to improve whole-body insulin sensitivity or GTT in 25 postmenopausal patients with T2DM (aged 62.9 ± 1.5 years, BMI 30.4 ± 0.9 kg/m2) after six weeks [1064]. This evidence concerns the gene INS and type 2 diabetes mellitus.