Diverticulitis: Management and Diet Insights from a Nutritionist

Contrary to previous beliefs that patients with diverticulitis should avoid fibre, current evidence strongly supports the inclusion of a high-fibre diet to manage symptoms and lower the risk of future attacks [17]. A nutritionist guides patients in gradually increasing fibre intake from sources such as fruits, vegetables, whole grains, legumes, and seeds, ensuring gentle and sustained improvements in bowel regularity and colon health. 

Studies show that individuals consuming 30g of fibre per day have a 41% reduction in risk compared to persons with a low fibre intake [18]. Furthermore, a high-fibre diet helps soften stools and reduce pressure within the colon, addressing one of the root contributors to diverticular disease. Nutritional analyses also suggest many patients with diverticulitis consume diets high in saturated fat and animal protein but low in magnesium, calcium, zinc, and vitamin E, nutrients essential for intestinal motility and inflammation control. Correcting these deficiencies through diet can be an important part of management.

Hydration is another key focus. Fibre’s effectiveness depends on adequate fluid intake, with nutritionists recommending at least 1.5 to 2 litres of water daily to facilitate optimal stool softness and movement. Additionally, physical activity – such as walking, swimming, or pilates – is encouraged to enhance gut motility and reduce constipation-related complications.

During an acute flare-up, a nutritionist may recommend a temporary low-fibre or clear liquid diet to allow the colon to rest and heal while managing symptoms. As inflammation subsides, they carefully reintroduce fibre-rich foods tailored to tolerance and symptom control, preventing malnutrition and promoting gut microbial balance. Nutritionists also support patients in identifying and avoiding personal trigger foods through food and symptom diaries.

Obesity is a significant modifier of disease severity and recurrence risk. Nutritionists provide crucial support in weight management through sustainable dietary changes and lifestyle coaching, aiming to reduce the increased risk associated with a high BMI. This holistic guidance often integrates stress management techniques, given that stress can exacerbate symptoms by disrupting gut function.

By partnering with a nutritionist, individuals with diverticulitis gain personalised, evidence-based strategies for dietary management and lifestyle changes. The success of this collaborative approach is exemplified by studies that report outpatient treatment as a safe and effective therapeutic approach in up to 90% of patients with uncomplicated diverticulitis [19], with dietary management a consideration in this approach. 

Moving From Flare-ups to Long-term Wellness

For many living with diverticulosis or recovering from diverticulitis, the focus naturally shifts from managing acute flare-ups to achieving sustained digestive wellness and preventing recurrence. 

Diverticulitis flare-ups typically resolve within two weeks with appropriate treatment, but about 10-35% of people experience another episode after a first [20], highlighting the importance of proactive long-term strategies rather than reactive crisis management. However, early follow-up is recommended to help improve outcomes by allowing timely reassessment and adjustment of care plans, reducing hospital readmissions and preventing progression to complicated disease. 

A key aspect of moving toward lasting health is gradually transitioning from symptom-focused care – such as low-fibre or liquid diets during flare-ups – to a balanced, high-fibre diet that supports colon integrity and reduces pressure within the bowel. Research shows that a high-fibre diet can reduce the risk of recurrent diverticulitis and decrease hospitalisations due to diverticular disease [18]. 

This gradual, evidence-based lifestyle shift can be supported by nutritionists who personalise dietary plans and lifestyle advice, helping patients adapt fibre intake, hydration, and exercise based on tolerance and progression. Through ongoing professional guidance, the journey from frequent acute episodes to long-term stability becomes achievable, empowering individuals to regain energy, reduce complications, and enhance quality of life. 

Taking Control of Your Situation With The Health Suite  

Receiving a diagnosis of diverticulitis or diverticulosis can be unsettling, but it’s also a powerful moment to take control of your health and set a new course for your future. 

At The Health Suite, we believe that a proactive, personalised approach brings the best outcomes – not just in managing current symptoms, but in building long-term digestive wellbeing. Our aim is to empower you, transforming what can feel like a limiting diagnosis into an opportunity for meaningful, positive lifestyle change.

From your first consultation, our experienced nutritionists and multidisciplinary team work closely with you to assess your unique needs, medical history, and lifestyle. We create tailored nutrition plans focused on gradually increasing dietary fibre, optimising hydration, and carefully introducing foods that promote gut health and reduce the risk of recurrence. During flare-ups, your care is adapted to provide short-term symptom relief while building toward sustained improvement in your dietary routines.