Study the association of testosterone levels with insulin resistance in Iraqi men with Diabetes mellitus type 2

This study was set to evaluate the testosterone serum levels and their association with insulin resistance to uncover if any related possible negative consequences in Iraqi patients with Diabetes mellitus (DM). Sixty six men with type 2 DM were randomly selected and compared to 18 healthy volunteers, demographic data were collected in addition to 10 ml of venous blood was drawn to evaluate serum levels of total Testosterone (T), free testosterone (FT), c-peptide, Sex Hormone Binding Globulin (SHBG), lipid profile, and blood sugar. The mean serum level of total testosterone was 2.434 ± 0.12 ng/ml in diabetic patients and 3.62 ± 0.32 ng/ml in non-diabetic subjects which was significantly different (p=0.003). The mean value of free serum level of testosterone was significantly higher in non-diabetic group (14.71 ± 1.4 pg/ml) in comparison with diabetic group (10.71 ± 0.54 pg/ml; p=0.017). Total testosterone correlates positively with FT and SHBG, while negatively with c-peptide, age and Body mass index (BMI). It’s concluded that total testosterone, free testosterone, and SHBG were significantly lower in diabetic group which strongly associated with insulin resistance.