GIP and Insulin resistance: High fasting levels of TG, which is a common component of insulin resistance, are significantly associated with GIP (r = −0.43, n = 18, p = 0.05) and MTRNR2L1 (r = 0.65, n = 18, p < 0.01) but only tend to be associated with MSMB (r = −0.40, n = 18, p = 0.08).