Abstract
Dietary fiber intake in IBD patients has oftentimes generated conflicting data and clinical recommendations. This review aims to unify apparently conflicting lines of evidence regarding dietary fiber intake in IBD patients by highlighting new information from natural history studies and prospective clinical trials. IBD patients have lower dietary fiber intake than the general population as well as national guideline recommendations. Patients report short-term benefits from fiber avoidance. Low fiber and low FODMAP diets are associated with lower fecal microbiota abundance and essential nutrient intake. There is emerging evidence suggesting that IBD patients may be able to increase dietary fiber intake with short-term benefit and good tolerability, particularly when fiber is introduced during clinical remission. Current societal recommendations do not favor withholding dietary fiber during long-term IBD management. The long-term impact of increased dietary fiber on IBD clinical outcomes remains unanswered. Dietary fiber intake is not necessarily contraindicated in IBD patients.
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