Introduction: The children of today will be the adult of tomorrow, central to this vision of the future, focusing on today’s children and educating them to change their behavior towards healthy eating pattern is necessary. Preventive approach to maintain good health with specific education can be greater benefit for the children to prevent mental and physical ailment. Aim: To assess the effectiveness of planned teaching program on knowledge regarding health hazards of sweetened beverages and fast food consumption among adolescents in elected schools of Kullu, Himachal Pradesh. Settings and Design: A pre-experimental study was conducted in 2021 in selected schools of Kullu, Himachal Pradesh sample of 60 adolescents students were selected using non-probability purposive sampling technique. Pre-test was conducted and on same day planned teaching program was administered. After relapse of seven days, post test was conducted using self structured questionnaire. Result: The finding showed that mean pre test knowledge score was 9.73±4.843 and posttest mean knowledge score was 25.77±2.801 with mean difference of 16.04 .paired “t” test was applied and the value of “t” was 35.652, P is <0.001 which was found to be significant and effectiveness seen in knowledge level of 85.90%, which interpreted that majority of adolescents students has gained knowledge to good knowledge regarding health hazards of sweetened beverages and fast food consumption.