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.

Sources

• https://www.uptodate.com/contents/diverticulosis-the-basics?search=diverticulosis%20diet&source=search_result&selectedTitle=3~150&usage_type=default&display_rank=3

Medical Disclaimer

This resource is provided for educational and informational purposes only and is not intended to replace professional medical advice, diagnosis, or treatment. The information presented is general in nature and may not apply to every individual or health situation.

Individuals should consult their physician or another qualified healthcare professional for personalized medical advice, diagnosis, or treatment recommendations related to their specific health conditions.

Do not ignore or delay seeking professional medical advice because of information contained in this resource.

Call 911 if you are experiencing a medical emergency.