What to eat at each stage: clear liquids, low-fiber transition, and high-fiber prevention
In the past, doctors advised their patients with diverticulitis to avoid seeds, nuts, and popcorn because of the theory that they caused diverticular bleeding. But a 2008 study found no scientific evidence that nuts and popcorn caused problems for individuals with diverticulitis. They add solid fiber to a person's diet. These foods don’t usually cause symptoms for most people either. However, if an individual is experiencing a flare-up, doctors may advise them to avoid eating popcorn, nuts, peanut butter, and other types of nut butter.

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