Diverticular Disease and Nutrition: Eating Well for a Happier Gut

Understanding Diverticular Disease

The digestive system is an amazing thing — but like any part of our body, it can develop issues over time. One of the more common gut conditions, particularly as we get older, is diverticular disease.

It starts with diverticulosis, where small pockets (diverticula) form in the lining of the large intestine. These pockets are usually harmless, but they can become inflamed or infected, leading to diverticulitis, which can cause abdominal pain, bloating, and changes in bowel habits.

The good news? Diet and lifestyle play a big role in preventing flare-ups and supporting gut health — and that’s where a dietitian can make a real difference.

Why Nutrition Matters in Diverticular Disease

The main aim with diverticular disease is to keep your bowels moving smoothly and prevent constipation, which can increase pressure in the colon and worsen symptoms. A healthy diet can help:

• Reduce the risk of flare-ups

• Ease constipation and bloating

• Support overall gut function

• Improve nutrient absorption for better health

Fibre: Your Gut’s Best Friend

Fibre is the MVP when it comes to managing diverticular disease — but the type and amount matter.

1. Soluble Fibre This type softens stools and makes them easier to pass. Good sources include:

• Oats

• Apples and pears (with skin if tolerated)

• Carrots and sweet potato

• Legumes (lentils, chickpeas, beans)

2. Insoluble Fibre This type adds bulk and helps food move through the digestive tract. You’ll find it in:

• Wholegrain breads and cereals

• Brown rice and wholemeal pasta

• Nuts and seeds

• Vegetables like broccoli and spinach

The trick is to increase fibre gradually and drink plenty of water — otherwise you might feel more bloated or uncomfortable.

During a Flare-Up

When symptoms are active, your gut needs a rest. A temporary low-fibre diet can help reduce irritation. This may include:

• White bread and refined cereals

• Peeled fruits and cooked vegetables

• Lean meats and fish

• Dairy products

Once symptoms settle, it’s important to slowly reintroduce fibre with guidance from a dietitian.

What About Nuts, Seeds, and Popcorn?

For years, people with diverticular disease were told to avoid these foods. Recent research shows they don’t actually increase the risk of flare-ups for most people — but tolerance can vary. If you’re unsure, a dietitian can help you test these foods safely.

Lifestyle Tips That Support Gut Health

Nutrition is only part of the picture. To manage diverticular disease well, it also helps to:

• Stay hydrated – Aim for at least 6–8 cups of fluid a day.

• Be active – Gentle movement supports healthy digestion.

• Manage stress – Stress can worsen gut symptoms.

• Listen to your body – Keep a food and symptom diary to track triggers.

Why Work With a Dietitian?

Every gut is unique — what works for one person may not work for another. At Dietitians NT, we:

• Create tailored nutrition plans to suit your symptoms and preferences

• Guide you through fibre reintroduction after a flare-up

• Help identify and manage personal trigger foods

• Work alongside your healthcare team for complete support

Ready to Take Control of Your Gut Health?

Living with diverticular disease can be tricky — but you don’t have to navigate it alone. At Dietitians NT, we help you find the foods that work for your body, so you can reduce symptoms and enjoy eating again.

Book your consultation today — in person or online — and start building a gut-friendly lifestyle that lasts.