LEP and prediabetes syndrome: In participants with prediabetes serum leptin levels tended to be higher (19.5 μg/L [13.5; 27.7] vs. 16.7 μg/L [12.0; 24.3] in female and 7.8 μL/L [4.6; 9.9] vs. 6.5 μg/L [3.9; 9.7] in male participants).