just to add to what has already been said: since the diverticulum is inflammed (itis) it would be prudent to be on a very-low fiber/low-residue diet when the inflammation recedes slowly add fiber; the after a follow-up colonoscopy indicates the lesions have healed add fiber in you diet; the fiber will aid to keep your colon clean, and yes aviod anything with seeds and nuts, a low fat diet is always beneficial.