Prevalence of Metabolic Syndrome Among Students: Associations with Dietary Habits, Physical Activity, and Sociodemographic Factors.

: The prevalence of metabolic syndrome (MetS) among youth is rising, and the increase is closely linked to unhealthy lifestyle patterns. This study aimed to determine the prevalence of MetS among University of Rijeka students and investigate its associations with dietary habits, physical activity, gender, and faculty type (health and non-health faculties). : A cross-sectional study conducted from September 2024 to March 2025 involved 217 randomly selected students from 16 faculties. The validated questionnaires Mediterranean Diet Adherence Screener (MEDAS) and International Physical Activity Questionnaire Short Form (IPAQ-SF), as well as a general data questionnaire, were used alongside anthropometric (height, weight, waist circumference) and biochemical measurements (fasting plasma glucose, triglycerides, HDL cholesterol). MetS was diagnosed using a combination of International Diabetes Federation (IDF) criteria and Polish Experts Consensus (2022) criteria. Statistical analyses included descriptive statistics, -tests, ANOVA, Spearman's correlation, and multivariate logistic regression. : MetS was identified in 5.5% of students. Significant risk factors included obesity (body mass index, BMI, < 0.05), low physical activity (IPAQ-SF, < 0.05), elevated blood pressure ( < 0.01), high triglyceride levels ( < 0.05), and increased waist-to-height ratio (WHtR, < 0.01). Female students reported lower physical activity than males ( < 0.05), while students from non-health faculties had lower adherence to the Mediterranean diet (MEDAS, < 0.05) and reduced physical activity ( < 0.05). Higher adherence to the Mediterranean diet correlated with lower BMI and triglyceride levels ( < 0.05), whereas lower adherence was associated with reduced physical activity (Spearman's r = -0.35, < 0.01). Logistic regression with WHR as the dependent variable showed waist circumference (WC) as the strongest predictor (OR = 45.925, 95% CI: 5.238-402.666, = 0.001), followed by triglycerides (OR = 3.395, 95% CI: 1.322-8.718, = 0.011). BMI was inversely associated with WHR (OR = 0.068, 95% CI: 0.006-0.780, = 0.031). HDL cholesterol, systolic and diastolic blood pressure, and fasting glucose were not significant predictors ( > 0.05), indicating limited predictive power in this model. : The 5.5% MetS prevalence underscores the need for targeted interventions promoting Mediterranean diet adherence and physical activity, particularly among non-health faculty students and females. Longitudinal studies are warranted to assess intervention efficacy.