[Role of diet in the prevention and development of Crohn's Disease].

Introduction: Crohn's disease (CD) is a chronic recurrent inflammatory bowel disease (IBD) with frequent ileocolic location, although it can affect the entire gastrointestinal tract. It is characterized by the development of skipped lesions and transmural inflammation and its incidence is increasing. The etiology and pathogenesis are related to genetic susceptibility, intestinal microbiota, dysbiosis, immunological abnormalities and environmental factors (tobacco use, NSAIDs, oral contraceptives and diet). Diet may play a key role in the development and prevention of CD. Dietary patterns with high inflammatory potential (high intake of saturated fat, sugars, proteins, salt, as well as low consumption of fruits and vegetables) are associated with a higher risk of CD, while the consumption of a healthy diet, together with the practice of Exercise is a protective factor against relapses in IBD and reduces the risk of CD. Regarding dietary components, the consumption of fiber, as well as dietary polyphenols, has been related to the maintenance of the intestinal barrier by preventing erosion of the mucosal layer. ω-3 fatty acids, in addition to their anti-inflammatory activity, promote the balance of the intestinal microbiota and their supplementation reduces postoperative complications and accelerates recovery in patients with CD. Vitamin D also plays an important role in the integrity of the intestinal barrier by reducing permeability, in addition to having an immunomodulatory and anti-inflammatory effect, being a useful tool in the improvement of patients with CD. Prebiotics and probiotics may be useful in the treatment of IBD patients by stimulating mucus production, reducing inflammation and dysbiosis, and maintaining the integrity of the intestinal barrier.