Adolescence is the second last chance for growth in the life cycle. Prevalence of stunting and underweight was high in adolescents. The nutrition intervention program among school children imparts healthy eating practices and good food choices. Soya bean contains a good amount of vitamins and minerals and protein. It is called a complete protein. The study was carried out among adolescents and adults. Basic information, socio-economic information, anthropometry measurements, clinical examination, and dietary aspects were collected from 400 subjects. The developed soya bean mix with all variations was tested for its acceptability. The variation 5 scored high (21) and had good nutrient content when compared with other mixes. The protein content was 25.5 g, iron was 11 mg, 472 K.Cal, and cost was ₹8 per 100g of mix. The nutrition education was given for the underweight adolescents and the impact was assessed. There was a significant improvement in the nutrition knowledge, attitude and practice after imparting the nutrition education. It was significant at one percent level among boys and 5 percent level in girls. No significant difference among the control group. Nutrition education has a positive impact on improving Knowledge, attitude, and practice among underweight adolescents. The aim of this study is to elicit the nutritional status of the adolescents and adults. Impart the nutrition education among underweight adolescents and to study the impact. The acceptability and nutrient content of the developed soya bean mix also analyzed.