[header] How to treat diverticulitis [title] Consume a liquid, low-fiber diet. [step] One of the possible causes of diverticulitis is the consumption of small, inadequately chewed and difficult-to-digest foods like seeds, corn, and berries. These get caught in the diverticula of the intestine and feed a bacterial colony, sometimes causing infection. 
If experiencing an episode of diverticulitis, it is best to avoid any foods which might worsen the infection. This means avoiding fiber (which pushes more waste into the infected area) and avoiding the aforementioned difficult-to-digest foods.