[Nutrition Demand and Care of Patients Undergoing Bariatric Surgery].

The increasing prevalence of obesity and comorbid conditions worldwide requires the development of effective strategies for both treatment and prevention. In recent years, bariatric surgery has emerged as the most effective weight-loss therapy for individuals affected by moderate and morbid obesity. Behavioral alterations in eating patterns and anatomical and physiological modifications to the gastrointestinal organs may result in significant deficiencies in protein and micronutrients such as iron, folate, Vitamin B12, and thiamin. Many individuals with obesity have already-existing nutritional deficiencies before receiving bariatric procedures. The preoperative screening for and correction of micronutrient deficiencies preoperatively are crucial, as these deficiencies may be further exacerbated by the bariatric procedures. Because a balanced diet is key to successful weight loss at all stages of treatment, after the operation, patients should consume a diet that is low calorie and rich in protein, choose foods of the proper volume and consistency, and drink an appropriate amount of fluids. Maintaining a proper diet will enable patients to avoid unpleasant sensations after surgery and improve the phenomenon of inadequate nutritional needs.