• Diverticulosis occurs when small pouches, called diverticula, bulge outward through weak spots in the colon (large intestine).
  • The pouches form when pressure inside the colon builds, usually because of constipation.
  • Most people with diverticulosis never have any discomfort or symptoms.
  • The most likely cause of diverticulosis is a low-fiber diet because it increases constipation and pressure inside the colon.
  • For most people with diverticulosis, eating a high-fiber diet is the only treatment needed.
  • You can increase your fiber intake by eating these foods: whole grain breads and cereals; fruit like apples and peaches; vegetables like broccoli, cabbage, spinach, carrots, asparagus, and squash; and starchy vegetables like kidney beans and lima beans.
  • Diverticulitis occurs when the pouches become infected or inflamed and cause pain and tenderness around the left side of the lower abdomen.