Introduction: Food allergy is a complex disease which treatment is based on elimination diets. In the Colombian pediatric population, as reported in world literature, has been a progressive increase in food allergy, which is not only a diagnosis but also therapeutic challenge. In our experience, a significant proportion of patients presenting on admission, have some degree of commitment of nutritional status that can be from mild to severe. It is considered that early treatment would seize the window of opportunity for growth in each patient. Objective: To evaluate the impact of medical-nutritional treatment on physical growth of patients with confirmed food allergy in the first two years of life in a pediatric gastroenterology unit in the period from 2008 to 2014. Materials and Methods: A retrospective cohort study was developed taking data from medical records. Patients of both sexes between 0 and 2 years of age with confirmed food allergy in a pediatric gastroenterology unit, which had successfully completed the proposed medical - nutrition therapy, and who underwent open or closed allergen challenge, were included. Changes in physical growth were compared using the standard deviations for each of the indicators calculated using the WHO Anthro (version 3.2.2, January 2011) software. Based on the classification of nutritional status of resolution 2121 of 2010, the frequency was estimated, both at baseline and at the time of challenge, of each of the nutritional indicators. Results: The anthropometric characteristics of patients with food allergy before and after medical treatment by the binomial nutritional pediatric gastroenterology and nutrition shows significant differences mainly in the indicators of weight for age (-1.15 (95% CI - 1.50, - 1.80) vs 0.39 (95% CI -0.65, -0.12) p> 0.0001) and length-for-age (-1.60 (95% CI - 1.99, -1.21) vs -0.98 (95% CI -1.32, 0.65) p 0,001). Conclusions: The present study demonstrates that children with food allergy admitted with pondostatural commitment, improve after the onset of nutritional medical treatment by pediatric gastroenterology and nutrition