<![CDATA[Overweight among adolescents is a condition in which body weight exceeds the normal range for age, height, and sex, as measured by Body Mass Index (BMI). One of the contributing factors is the frequent consumption of fast food, which is typically high in calories, fat, and sugar but low in fiber and essential nutrients. This study aimed to examine the relationship between fast-food consumption behavior and the incidence of overweight among adolescents at SMPN 1 Baitussalam, Aceh Besar. This study employed a quantitative research design with a cross-sectional approach. The study population consisted of 223 students in grades VII and VIII, and a sample of 69 respondents was selected using simple random sampling based on the Slovin formula. Data were collected using a Food Frequency Questionnaire (FFQ), while body weight and height were measured directly to calculate BMI. Data were analyzed using univariate and bivariate analyses with the chi-square test. The results showed that 58.0% of the students frequently consumed fast food, while 39.1% were classified as overweight. The Chi-square test yielded a p-value of 0.000 (<0.05), indicating a statistically significant relationship between fast-food consumption behavior and the incidence of overweight among adolescents at SMPN 1 Baitussalam, Aceh Besar. The findings suggest that adolescents who frequently consume fast food are at a higher risk of being overweight than those who consume it less frequently. Therefore, schools and parents are encouraged to improve adolescents' knowledge of healthy eating habits and reduce the frequency of fast-food consumption as a strategy to prevent overweight]]>
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