GPT and Insulin resistance: The two groups of men did not differ in terms of s-Klotho, mean blood pressure (MBP), triglycerides, high-density lipoprotein (HDL), homocysteine, hsCRP, glycated hemoglobin (HbA1c), glucose to insulin ratio, homeostatic model assessment for insulin resistance (HOMA-IR), creatinine, aspartate aminotransferase to alanine transaminase ratio (ALT/AST) or total testosterone level (in each case: p>0.09 – See Supplementary Table 2 in Supplementary Material).