INS and cardiovascular disorder: Interestingly, the results of the “Relationship between Insulin Sensitivity and Cardiovascular disease” study also demonstrated a similar finding.[20] In their predominantly Caucasian cohort, γ-GT was associated with basal and total insulin secretion rates during the oral glucose tolerance test, with r values of 0.28 and 0.27 for basal insulin secretion (men and women, respectively), and 0.23 and 0.17 for total insulin secretion (men and women, respectively).