However, neither drug affected endogenous glucose production or the glycerol rate of appearance.[102] Furthermore, Teff et al (2013) administered olanzapine, aripiprazole, or placebo for 9 days to healthy subjects (n = 10 for each group) and noted that while aripiprazole induced insulin resistance, olanzapine led to significant increases in postprandial insulin, glucagon-like peptide 1, and glucagon levels, coinciding with insulin resistance.[84]. Here, GCG is linked to Insulin resistance.