Lukács A, Horváth E, Máté Z, et al. - By performing this cross-sectional analysis, researchers investigated if the metabolic risk observed in non-obese individuals (BMI < 25 kg/m²) with abdominal obesity studied in the framework of the Swiss–Hungarian Cooperation Programme was increased as compared with participants without abdominal obesity. This study included 5,228 non-obese people. The presence of abdominal obesity was reported in 607 (11.6%) non-obese individuals. The correlation coefficients between BMI and waist circumference (WC) were estimated to be 0.610 and 0.526 in males and in females, respectively. Significantly higher prevalence of high systolic blood pressure, high fasting blood glucose, and high total cholesterol and triglyceride levels was reported in this subgroup. Findings revealed a very high, significant, positive correlation between WC and BMI. A strong link of abdominal obesity with certain metabolic risk factors was also observed in non-obese individuals. Therefore, a suggestion could be made for using waist circumference as a simple as well as efficient means to screen abdominal obesity and associated metabolic risk even in non-obese people.