IntroductionThe metabolic syndrome is a cluster of the most dangerous heart attack risk factors: diabetes andprediabetes, abdominal obesity, high cholesterol and high blood pressure. Also it is known as acluster of changes associated with resistance to insulin.There is a convincing evidence of important ethnic differences in the prevalence of metabolic syndrome,its components and sequelae. Estimates vary by country, but generally they show higher prevalenceof metabolic syndrome in non-European groups. Based on these findings, we were convinced inthe importance of studying the prevalence of metabolic syndrome and insulin resistance among thepopulation of Mongolia.Materials and MethodsThe main goal of our study was the determination of insulin level and insulin resistance in metabolicsyndrome exposed and non-exposed groups. We included 194 randomly selected people aged 20-60 years old; among them 51 had metabolic syndrome which was identified by the criteria of theInternational Diabetes Federation. All participants underwent general medical examinations andsigned a written consent paper. Fasting blood glucose, triglyceride, HDL, insulin levels were measuredin fasting blood serum and insulin resistance was calculated as a HOMA-IR model.ResultsAverage age of participants was 44,26±8,66 years, of whom 46,4% (n=90) were male, 53,6%(n=104)were female. By IDF criteria, 26,2% (n=51) of the participants had metabolic syndrome. Insulin levelwas 17,23±14,91μIu/mL in MS exposed group which was much higher than in the control group.Insulin, HOMA-IR, had direct correlation with the body mass, BMI and waist circumference andinverse correlation between HDL.Conclusions26.2% of the study participants had metabolic syndrome which was defined by IDF criteria. Insulin levelin the MS exposed group was 17,23±14,91μIu/mL, higher than in the control group by 7,53±2,21μIU/mL. Insulin, HOMA-IR, showed a direct correlation with the body mass, BMI and waist circumferenceand inverse correlation between HDL.