People with severe symptoms of diverticulitis are recommended to consume liquid food preparations such as broth and fruit juices. After symptoms improve, low-fiber foods such as white bread, fish, dairy products and meat can be eaten, explains WebMD. Eventually, high-fiber foods such as whole grains can be consumed.
High-fiber foods such as whole grain breads, cereals and pastas are believed to prevent diverticulitis and are recommended to be introduced into the diet when diverticulitis symptoms decrease. High-fiber foods such as kidney and black beans add bulk and soften the stool so it can pass more easily through the intestines. Fruits such as apples, pears and prunes, and vegetables such as spinach, squash, potatoes and peas are also high-fiber foods that can be eaten on a diverticulitis diet, states WebMD.
People with diverticulitis were once recommended to avoid difficult-to-digest foods such as popcorn, nuts, seeds and corn. However, as of 2015, there is no reliable evidence these foods cause inflammation in the digestive tract, according to WebMD. On the contrary, these foods are a good source of dietary fiber. Fiber-containing foods are beneficial for preventing increased pressure in the digestive tract. Research studies demonstrate these foods can help to control the symptoms of diverticulitis. It is recommended that 25 to 35 grams of fiber be consumed each day to help prevent diverticulitis symptoms.