Associations of intermediate hyperglycemia with elevated abdominal obesity, high-sensitivity C-reactive protein, and leptin in Korean adults.

Purpose: This study investigated the associations between intermediate hyperglycemia (IH) and increased body mass index (BMI), abdominal obesity (AO), high-sensitivity C-reactive protein (hs-CRP), and leptin levels in Korean adults. Methods: The participants were 248 adults (≥ 19 years) who understood the purpose of the study, had no cognitive impairment, and were able to communicate. Physical examinations, BMI, AO measurements, and blood tests were performed. Data were analyzed using the t-test, chi-square test, Pearson correlation coefficients, and multiple logistic regression analyses. The risk factors for IH were predicted after adjusting for BMI, waist circumference (WC), age, hs-CRP and leptin levels, education, and economic status. Results: WC, hs-CRP and leptin levels, and age were higher in the IH group than in the non-IH group. According to the multiple logistic regression analysis, the factors affecting IH prevalence were WC, hs-CRP, leptin, and age. AO (male, WC ≥ 90 cm; female, WC ≥ 85 cm) exhibited an adjusted odds ratio of 5.45 for IH. IH was 2.43 times higher in those with hs-CRP > 3 mg than in those with hs-CRP < 1 mg. As leptin levels increased, the odds ratio for IH increased by 3.05 times. IH was 8.07, 8.79, 18.42, and 35.33 times more common for those in their 30s, 40s, 50s, and ≥ 60 years of age, respectively, than those 19-29 years old. Conclusion: This study provides evidence that interventions for AO should be included in IH management programs. Identifying the predictive factors for IH may contribute to the early detection of type 2 diabetes mellitus.