Diverticulitis is a condition affecting the digestive tract, specifically the large intestine. Small, bulging pouches, called diverticula, can form in the colon’s lining. When these pouches become inflamed or infected, the condition is known as diverticulitis. While diverticulosis, the presence of these pouches, is common, most individuals do not experience problems. Diet is a frequent concern for those with diverticulitis, particularly regarding common food misconceptions.
Dispelling the Myth About Raisins
For many years, individuals with diverticulitis were advised to avoid small, hard foods like raisins, nuts, and seeds. The theory suggested these particles could become lodged in the diverticula, leading to inflammation or flare-ups. However, current medical understanding does not support this claim. Research indicates no scientific evidence that these foods cause diverticulitis flare-ups. Studies have shown that consuming nuts, corn, and popcorn is not associated with an increased risk of complicated diverticular disease.
Raisins, like many of these foods, are sources of dietary fiber. Fiber benefits colon health by improving gut movement and adding bulk to stool. This helps prevent constipation, a factor in the development of diverticula and increased pressure within the colon. Therefore, raisins are generally safe for most people and can be part of a healthy, fiber-rich diet.
Eating During a Diverticulitis Flare-Up
During an acute diverticulitis flare-up, the goal is to allow the bowel to rest and heal. Healthcare professionals recommend a temporary diet shift, often starting with clear liquids.
Examples of clear liquids include:
Clear broths
Fruit juices without pulp (such as apple, cranberry, or grape juice)
Water
Plain tea or coffee
Gelatin or popsicles without fruit pieces
As symptoms improve, a gradual progression to low-fiber foods is advised. This temporary low-fiber diet helps the digestive tract recover without excessive strain. Foods like white bread, white rice, plain pasta, well-cooked lean proteins (such as fish, poultry, or eggs), and canned or cooked fruits and vegetables without skins or seeds are often included. This low-fiber approach is temporary and should be followed under healthcare professional guidance.
Long-Term Dietary Management
After a diverticulitis flare-up has resolved, or for individuals managing diverticulosis, long-term dietary management focuses on preventing future episodes. A high-fiber diet promotes regular bowel movements and reduces pressure within the colon. Fiber softens stool, allowing it to pass more easily, which can mitigate the risk of diverticula formation and inflammation.
Foods rich in fiber include whole grains like oats, brown rice, and whole wheat bread, as well as various fruits, vegetables, beans, and legumes. When increasing fiber intake, do so gradually to allow the digestive system to adjust and prevent discomfort like bloating. Alongside a high-fiber diet, adequate hydration is important; drinking plenty of water helps fiber function effectively and keeps stools soft. While a balanced, healthy diet is recommended, individual responses to foods can vary, and consulting a doctor or a registered dietitian for personalized dietary advice is beneficial.