Do I really have to eat a diet high in fibre if I suffer from diverticular disease?

Diet high in fiber. You need to eat 205to35 grms of fiber daily if you suffer fro diverticular disease, only exception is during acute diverticulitis when you have to be on low residue diet consistiong of water, fruit juices.Broth and ice pops to regular diet to low fiber to finally high fiber diet, 25to35 grms per day.
Diverticulosis. Diverticulosis is manageable, not curable. Once the pockets in the colon form, they don't go back again. High fiber diet is the rule to reduce the number of attacks and to try to prevent more diverticuli from forming.
No, but... You don't have to do anything you don't want to do, but it would help. Constipation is something to be avoided if you have diverticulosis.