Diverticulosis occurs when pouches called diverticula develop in the walls of the large intestine. While the cause is unknown, risk factors include not eating enough fiber, straining during bowel movements, and constipation. Most people with diverticulosis do not experience symptoms until it turns into diverticulitis, causing pain, bloating, fever, and other issues. Diverticulosis is often diagnosed during a routine colonoscopy or x-ray for another issue, and may also involve blood tests or CT scans. Treatment focuses on increasing fiber intake, staying hydrated, and eating fruits/vegetables to prevent symptoms and diverticulitis.