Evidence supporting the use of: Fiber (unspecified)
For the health condition: Crohn's Disease

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Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Dietary fiber has been studied in relation to Crohn's disease, but the evidence supporting its use is limited and nuanced. Fiber may help regulate bowel movements and support gut health in the general population, and some types of fiber (such as soluble fiber) can act as prebiotics, promoting beneficial gut bacteria. However, in Crohn's disease—especially during active flares—high fiber intake is often not recommended due to the risk of bowel obstruction, particularly if there are strictures present. Some observational studies and small clinical trials suggest that certain fibers (e.g., psyllium, inulin) may have modest benefits in maintaining remission or improving symptoms in Crohn’s disease, but results are inconsistent and depend on disease activity and fiber type. Major clinical guidelines generally advise individualized fiber recommendations, noting that some patients tolerate fiber well, especially when the disease is in remission, while others do not. There is no robust, high-quality evidence that dietary fiber universally supports remission or treatment of Crohn’s disease, and recommendations are made with caution. Thus, while scientific exploration exists, the overall evidence base is weak (rated 2/5), and fiber use should be tailored to the patient's condition and tolerance, ideally under medical supervision.

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