Abstract Depression In adolescence is linked with a range of adverse outcomes and substantial risk for morbidity and mortality across the life span. Fast food is a common element of many adolescent’s diets. This leads to pediatric obesity and the consequence could be increased risk of depression. A diet high in sodium could develop symptoms of depression in early adolescence and that diet could be a modifiable risk factor for depression in adolescent patients.The aim of the study is to evaluate the association between fast food intake and mental health in the adolescent population.An online questionnaire was prepared and circulated among the adolescent population.The sample size is 100. The data was tabulated and then imported to SPSS software by IBM and the statistical Chi square test was done.Out of 100 adolescents, 71% were females and 29% of them were males. 81% of them follow a mixed diet. 90% of the adolescents consume fast food.The prevalence of consumption of fast food is much higher in the adolescent population. Out of various types of fast foods, the prevalence of consumption of sweets is much higher in the adolescent population. And most