Answer From Katherine Zeratsky, R.D., L.D. Actually, no specific foods are known to trigger diverticulitis attacks. And no special diet has been proved to prevent attacks. In the past, people with small pouches (diverticula) in the lining of the colon were told to avoid nuts, seeds and popcorn.
Research suggests that a diet low in fiber and high in red meat may increase your risk of getting diverticulitis—inflammation of one or a few pouches in the wall of your colon. Eating high-fiber foods and eating less red meat may lower the risk.
Diverticulitis is caused by an infection of one or more of the diverticula. It is thought an infection develops when a hard piece of stool or undigested food gets trapped in one of the pouches. This gives bacteria in the stool the chance to multiply and spread, triggering an infection.
For patients who want to reduce their risk, a reasonable recommendation is to follow an anti-inflammatory diet. For example eating a high amount of green leafy vegetables, dark-yellow vegetables, coffee and tea and low consumption of red meat, processed meat, refined grain and sugary beverages.
Fresh fruits, like apples, have the most fiber when eaten with the skin. 13 However, if you're having symptoms of diverticulitis, look for lower-fiber options, like applesauce. Bananas are another good source of fruit fiber.
Plus, probiotics have anti-inflammatory effects, which may help to ease inflammation from diverticulitis. Probiotics are available in supplement form, but they can also be found in certain foods, such as yogurt, kombucha, and fermented vegetables.
During acute attacks of diverticulitis, eat a low-fiber diet. Avoid foods that may contribute to nausea or pain, such as caffeine, spicy foods, chocolate, and milk products.
The most common symptom of diverticulitis is belly or abdominal pain. The most common sign that you have it is feeling sore or sensitive on the left side of your lower belly. If infection is the cause, then you may have fever, nausea, vomiting, chills, cramping, and constipation.
When stress is added to the overall picture, the problem of diverticulitis becomes an issue. This is due to the body impulses that will immediately address stressful situations by shifting the oxygen and blood from the digestive tract to the brain and muscles.
A mild case of diverticulitis may go away on its own without any treatment. When treatment is necessary, antibiotics and a liquid or low-fiber diet may be all that is necessary to resolve symptoms.
Good options include canned fruits such as peaches or pears, applesauce, ripe bananas, and soft, ripe cantaloupe and honeydew. “It's not a lot of fiber because you're not eating the skin. The skins are the source of insoluble fiber, which can irritate inflamed polyps.”
“Eggs are a great source of protein, and they're easily digested,” Dr. Nazarian says. And they won't irritate your diverticula.
Your healthcare provider may advise a liquid diet. This gives your bowel a chance to rest so that it can recover. Include these foods: flake cereal, mashed potatoes, pancakes, waffles, pasta, white bread, rice, applesauce, bananas, eggs, fish, poultry, tofu, and well-cooked vegetables.
The diverticulitis flare will usually go away after four to six weeks, Doerfler says. At that point, you can start eating higher-fiber foods like whole grains, fruits and vegetables, and healthy fats like nuts, seeds, avocado, and olive oil.
As long as you are not in the acute phase of diverticulitis, it's OK to eat nuts, corn and popcorn. It's also OK to eat small fruits with seeds, such as strawberries and blueberries. Research has found that these foods are not associated with an increased diverticulitis risk.
Whilst diverticulitis usually requires medical attention, the addition of a good probiotic is worth considering to improve the intestinal flora, and to help normalise bowel function and regulate inflammation.
A diagnosis of diverticulitis no longer means you have a long list of foods to avoid. At one time, doctors recommended avoiding nuts, popcorn, seeds and even fruits or vegetables with seeds (like tomatoes or strawberries). But recent studies suggest those foods do not contribute to flare-ups and are fine to eat.
Once diverticula form, they do not disappear by themselves. Fortunately, most patients with diverticulosis do not have symptoms, and therefore do not need treatment.
Bulk-forming laxatives such as Metamucil or Citrucel may be recommended after the diverticulitis flare-up has resolved. These types of supplements can help add fiber to the diet while treating either constipation or diarrhea.