• Carlo Covello, Guia Becherucci, Franco Scaldaferri, Lucrezia Laterza, Antonio Gasbarrini, and Maria C Mentella.
• IBD Unit, Centro di Malattie dell’Apparato Digerente (CEMAD), Medicina Interna e Gastroenterologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy; IBD Unit, Centro di Malattie dell’Apparato Digerente (CEMAD), Medicina Interna e Gastroenterologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy. covellocarlo@gmail.com
• Pol. Arch. Med. Wewn. 2024 Feb 28; 134 (2).

AbstractThere is an increasing interest in using popular diets to manage inflammatory bowel diseases (IBDs), such as ulcerative colitis and Crohn disease. These conditions are often associated with nutritional deficiencies, protein‑energy malnutrition, micronutrient malnutrition, altered body composition, and sarcopenia. While dietary interventions can be supportive in treating intestinal symptoms of adult IBD patients, it is important to note that current guidelines from major scientific societies do not recommend any specific dietary interventions in this field. This review aims to provide a summary of the current evidence on dietary‑nutritional management for patients with IBD, specifically when the disease appears to be in remission, but the patient continues to experience irritable bowel syndrome (IBS) symptoms or functional gastrointestinal symptoms. We focus on vital aspects, such as malnutrition and sarcopenia definitions, screening, and nutritional assessment. We then discuss in detail the most popular diets used for IBD management over the years, characterizing each one in terms of effects on gut inflammation, IBS‑like symptoms, and potential risk of malnutrition. These diets include a low‑fermentable oligosaccharides, disaccharides, monosaccharides, and polyols diet, a gluten‑free diet, a Mediterranean diet, and a plant‑based diet. To date, current evidence does not conclusively establish the optimal diet for patients with IBS, suggesting that personalized dietary approaches may be the best strategy.

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