A diverticulitis diet is a diet designed to reduce or eliminate the symptoms of inflammation of diverticula, according to WebMD. Diverticula are small distended pouches in the intestines, which are thought to be tied to a lack of fiber in the diet.
Once diverticulitis is diagnosed, the initial diet for treatment is a liquid one including water, fruit juices, broth and ice pops, WebMD says. Despite the fact that diverticules are thought to be caused by a low-fiber diet, high-fiber foods are only introduced slowly, with solid foods starting with meat, white bread, eggs and other low-fiber foods. Once a patient is adjusted to solid food again, high fiber foods such as whole grains, beans, fresh fruits and vegetables can ease any future symptoms, particularly if they provide at least 25 grams of fiber per day.
Foods that are hard to digest should be avoided by people with diverticulitis, according to WebMD. These foods include nuts, corn, popcorn and seeds. These foods can get caught in the pouches in the intestines, increasing any inflammation. Diverticules without inflammation constitute a condition known as diverticulosis. Diverticulosis causes few or no symptoms. When the diverticules become inflamed, however, they cause pain, nausea, vomiting and other symptoms.