Background: Poor nutrition, unhealthy eating practices and decreased physical activity due to involvement and participation in screen time activities are major contributing factors for obesity. Objective: To study the nutritional status and eating practices among 14 -18 years’ adolescent boys of Chandigarh. Methodology: 500 adolescent school going boys belonging to 14-18years were selected using random sampling technique and were assessed for Nutritional status, obesity (BMI) and eating pattern by using a pretested, self-designed, structured questionnaire developed considering the objectives of the study. Results: Nearly one fourth (23 percent) subjects were overweight. Socioeconomic class and BMI of subjects was found to be significantly related (chi sq, p-value= 0.001) to Obesity and overweight status. Skipping breakfast (31.6%), snacking while watching television (40%) and eating in canteen (67.4%) were some of the unhealthy dietary habits. 70 % subjects devoted more than 1hr in sedentary leisure activity. Conclusion: Large scale nationwide campaigns to spread messages on healthy nutrition and physical activity, targeted at specific groups are required for the prevention of obesity and to check the growing epidemic of obesity.