Which dietary modification is part of treatment for mild diverticulitis?

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Increasing dietary fiber is beneficial because it creates bulkier stools and lowers intraluminal colonic pressure, which helps prevent diverticular inflammation and reduces the chance of future flares. In mild diverticulitis, a high-fiber diet is part of ongoing management after symptoms have stabilized, transitioning from any acute-resting phase to supporting regular, softer bowel movements and reducing recurrence risk. Gradually increasing fiber from fruits, vegetables, whole grains, and legumes to about 25–30 grams per day helps achieve this effect. While a brief low-residue or clear-liquid approach may be used during an acute flare to rest the colon, it is not the long-term strategy; a high-fiber intake is the protective, maintenance choice. A high-fat diet does not address the problem and is not recommended.