Quick Scoop
With diverticulitis, the main foods to avoid during a flare are usually high-fiber or hard-to-digest foods, because doctors often recommend a temporary clear-liquid, liquid, or low-fiber diet while the colon rests and heals.
[1][3]What to avoid
- Whole grains, bran, and other high-fiber foods during an acute flare. [3][1]
- Raw vegetables and fruit skins, depending on how severe the flare is. [4][3]
- Beans and legumes during the flare, since they are often part of a high-fiber diet. [3][4]
- Very spicy, greasy, or heavy foods if they worsen your symptoms, even though they are not proven triggers for everyone. [1][3]
What not to worry about as much
Nuts, seeds, corn, and popcorn were once commonly banned, but current evidence does not show that they cause diverticulitis attacks.
[2][1][3]During recovery
As symptoms improve, people are usually advised to move back toward bland, easy-to-digest foods first, then gradually return to a normal diet under medical guidance.
[2][1]Bottom line: during an active flare, the safest “don’t eat” list is usually whatever your clinician has told you to limit, especially high-fiber and rough foods; after recovery, a fiber-rich diet is commonly recommended to help lower future risk.
[1][3]