Eating Well with Diverticulosis and Diverticulitis
Understanding the Conditions
- Diverticulosis means small pouches (diverticula) have formed in the colon wall.
- It often causes no symptoms and is usually found during routine colon screening.
- Diverticulitis happens when one or more of these pouches become inflamed or infected.
- Symptoms may include abdominal pain (often lower left side), fever, nausea, or changes in bowel habits.
Following the right eating plan can help prevent flare-ups and promote healing.
Daily Eating for Diverticulosis (When No Active Inflammation)
The goal is to keep stools soft and regular.
“Good” Foods
- High-fiber vegetables and fruits: broccoli, carrots, peas, apples, pears, berries
- Whole grains: oatmeal, brown rice, whole-wheat bread and pasta
- Legumes: lentils, black beans, chickpeas
- Nuts and seeds (unless advised otherwise). Per UpToDate, typically, “you do not need to avoid seeds, corn, or nuts. These foods do not increase your risk of diverticulitis.”
- Adequate hydration with water—aim for 6–8 cups daily
Foods to Limit
- Highly processed foods: white bread, pastries
- Large amounts of red or processed meats
- Foods with little fiber such as chips and fried snacks
Tip: Add fiber gradually and drink adequate water to prevent gas and bloating.
During a Diverticulitis Flare
The goal is to rest the bowel and decrease irritation.
Recommended (Low-Fiber) Foods
- Clear liquids: broths, herbal teas, gelatin, clear juices without pulp
- Once improving: white bread, plain pasta or rice, eggs, skinless potatoes, canned or cooked fruit without skins or seeds
Foods to Avoid During Flare
- Raw vegetables and fruit with skins or seeds
- Whole grains and bran cereals
- Nuts, seeds, popcorn
- Tough meats and fried foods
As symptoms improve and your doctor approves, slowly reintroduce high-fiber foods.
Long-Term Tips
- Ask your healthcare provider how many grams of fiber per day you should aim for when not having a flare.
- Stay hydrated to keep fiber moving smoothly.
- Exercise regularly, as tolerated, to support healthy bowel function.
- Take medications (like prescribed fiber supplements) as directed.
When to Call the Doctor
- Severe abdominal pain or cramping, or pain that is worsening
- Fever, chills, or nausea
- Bloody, black, or dark red stools or persistent constipation/diarrhea
- Changes in stool consistency
- Vomiting blood or coffee ground appearance to vomit
- Always ask your healthcare provider for specific advise on what signs/symptoms they want you to call immediately to report, and when to seek urgent/emergency care.
Key Takeaways
- Diverticulosis: Focus on high-fiber foods and hydration every day.
- Diverticulitis flare: Start with clear liquids and progress to low-fiber foods until symptoms improve.
- Work with your healthcare provider to gradually reintroduce fiber and prevent future flares.
This information is for educational purposes and not a substitute for professional medical advice. Patients should follow specific instructions from their healthcare team.
Sources
This content was created with the assistance of AI. Any AI-generated content was reviewed by a Nurse Practitioner.