Diverticulitis diet explained pretty well here, high fiber low fiber quite good.
Diet diverticulitis fiber high
Dietary fibers are the indigestible portion of plant foods that move food through the digestive system, absorbing water and making defecation easier. Dietary fiber consists of non-starch polysaccharides such as cellulose and many other plant components such as dextrins, inulin, lignin, waxes, chitins, pectins, beta-glucans and oligosaccharides.
Search for more information on Diet diverticulitis fiber high: