Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Bran, particularly wheat bran, is commonly recommended in the dietary management of diverticular disease, though its use is more established for diverticulosis (the presence of diverticula) rather than acute diverticulitis (inflammation or infection of diverticula). The rationale is based on the ability of dietary fiber, such as that found in bran, to increase stool bulk and decrease colonic pressure, which theoretically helps prevent the formation of new diverticula and reduces the risk of symptom exacerbation. Several observational studies and clinical guidelines suggest that high-fiber diets are associated with a lower incidence of symptomatic diverticular disease and may decrease recurrence after an acute episode has resolved. However, during acute diverticulitis, a low-fiber or clear liquid diet is often recommended until symptoms improve, after which fiber (including bran) is reintroduced gradually. The scientific evidence specifically supporting bran for treatment of active diverticulitis is limited, but there is moderate evidence (hence the rating of 3) supporting its role in prevention of recurrence and management of chronic symptoms. Key references include clinical guidelines from gastroenterological societies and cohort studies linking dietary fiber intake with lower rates of diverticular complications. Overall, the use of bran is scientifically supported for ongoing management and prevention rather than acute treatment.

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