She said that her aunt had diverticulitis too. So now I'm worried that I might get it.
Risk factors are older age and history of diverticula - and possibly a low fibre diet.
Once formed, diverticula are permanent. No treatment has been found to prevent complications. Diet high in fibre increases stool bulk and prevents constipation, and theoretically may help prevent further diverticular formation or worsening of the condition. Bulk additives such as Metamucil are also used. Most attacks of diverticulitis, usually mild, are treated conservatively with bed rest, antibiotics, etc.