GIP and Insulin resistance: High GIP group was characterized by elevated fasting glucose, with impaired fasting glucose (5.6–6.9 mmol/L) in half of the cases, and enhanced insulin resistance HOMA-IR (Q2 (Q3–Q1): 3.68 (2.72–5.42) versus 2.70 (2.13–4.33), p = 0.021).