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Nutrition is a challenge for burn patients. Emphasized points are early enteral amounts by means of a naso-gastric tube, semi-recumbent position > 30°, gastro-intestinal survey improved by kinetics, weight evolution, nutritional amounts assessment to prevent proteino-energetic deficiency. Feeding is difficult with children, as with seniors often associating a preexisting starvation. Nutritional supplements are useful in medium severity patients. For overweight patients, hypo caloric and hyperprotidic diet is the better choice. Non hemodialysed kidney failure patients need potassium limitation. In case of perineal burns, short constipation or faecal collector rather than colostomy prevent local contamination. Enteral amounts are difficult to administrate in prone position following ARDS (recumbent, post pyloric tube). In extensive burns, quality of nutrients is more suitable than quantity. Old caloric formulas lead to badly tolerated over-nutrition, while indirect calorimetry or Toronto formula allow a better assessment. Immunonutrition (supplementation with trace elements, glutamine, arginine, omega 3 fatty acids, and rational control of blood glucose) could reduce oxidative stress and hyper metabolism induced by burn trauma.