This study investigates the association between diabetes knowledge and sweetened beverage consumption behavior among adolescents as a risk factor for type 2 diabetes mellitus. A cross-sectional analytical observational design was employed involving 94 eleventh-grade students selected through stratified random sampling from a senior high school in Semarang, Indonesia. Data were collected using the Diabetes Knowledge Questionnaire (DKQ-24) and a Food Frequency Questionnaire (FFQ), followed by univariate and chi-square analyses. The findings indicate that a substantial proportion of respondents demonstrated low levels of diabetes-related knowledge, while the majority reported infrequent consumption of sweetened beverages. Statistical analysis revealed a significant relationship between knowledge level and consumption behavior (p = 0.016), suggesting that cognitive factors contribute to shaping dietary patterns among adolescents. However, the observed behavioral patterns also reflect the influence of contextual determinants beyond knowledge, including environmental exposure, family practices, and lifestyle norms. These findings highlight that improving knowledge alone may not be sufficient to modify health behavior. Comprehensive preventive strategies integrating educational interventions and supportive environmental structures are essential to effectively reduce the risk of type 2 diabetes mellitus in adolescent populations.
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