Those experiencing a diverticulitis flare-up should only consume pulp-free, clear liquids, such as broth, apple juice, grape juice, cranberry juice and ice pops, according to the University of California San Francisco Medical Center. Doctors advise people with diverticulitis to add low-fiber, solid foods back into their diet gradually.
Individuals with diverticulitis should follow their doctors' instructions about the right time to start eating solid foods and return to a normal diet, notes the UCSF Medical Center. While recovering from a flare-up, it is essential to opt for low-fiber foods, such as eggs, dairy products, and seedless, skinless, well-cooked vegetables or fruits.
People with diverticulitis can usually safely consume 5 to 15 grams of fiber daily if their symptoms have already improved, says the UCSF Medical Center. They can go back to a high-fiber diet once the symptoms completely disappear. A high-fiber diet helps make the stool softer, prevents constipation and reduces colon pressure, thus preventing flare-ups. Good sources of fiber include vegetables such as corn, carrots and broccoli; fruits such as pears, bananas and apples; brown rice; bran and whole-grain cereals; and beans.
Those who presently don't eat high-fiber meals should slowly add fiber to their meal plans to avoid bloating and stomach discomfort, suggests the UCSF Medical Center. Doctors recommend eating 25 to 30 grams of fiber every day.