Eating a high-fiber diet is the mainstay of diverticular disease prevention.

Can diverticular disease be prevented?

Once formed, diverticula are permanent. No treatment has been found to prevent complications of diverticular disease. Diets high in fiber increases stool bulk and prevents constipation, and theoretically may help prevent further diverticular formation or worsening of the diverticular condition. As mentioned previously, some doctors recommend avoiding nuts, corn, and seeds which can plug diverticular openings and cause diverticulitis. Whether avoidance of such foods is beneficial is unclear.