This study aimed at studying the outcome of dietary habits on body composition and blood profile of adolescent girls in Puducherry. It involved multiple methodological approaches like survey, nutritional assessment, body composition analysis and biochemical analysis. Sample size was 1170 adolescent girls between 19-21 years. A self administered questionnaire was used for eliciting details on their life style practices. Prescribed standard tools were used for assessing the body composition. The result showed that most of them had the average fat percentage; metabolic age and resting metabolism...