Nutrition with IBD
Eating well with Crohn's disease or ulcerative colitis — general principles, and why individual advice matters most.
The 30-second summary
Inflammatory bowel disease (IBD) includes Crohn's disease and ulcerative colitis. Food does not replace medicines or specialist monitoring. Nutrition support aims to maintain enough energy, protein and micronutrients, reduce unnecessary restriction, and adapt texture or fibre when symptoms or complications make that appropriate.
Needs can be very different during active inflammation and during remission. Advice also changes with the part of the bowel affected, surgery, narrowing, blood results and current treatment. Use this guide to prepare questions; your gastroenterologist and an Accredited Practising Dietitian should shape the actual plan.
Eating during a difficult patch
During a flare, your care team may temporarily adjust food texture, fibre or nutrition support. The immediate aim is enough fluid and nourishment in a form you can tolerate.
A dietitian can help increase energy and protein without making portions uncomfortably large. Severe symptoms, dehydration, fever, increasing pain or bleeding need contact with the treating team.
Rebuilding variety when things are settled
During remission, the focus often shifts towards a sustainable, varied pattern. Reintroducing foods gradually can restore confidence and reduce the chance of long-term nutritional gaps. Tolerance is personal: a food that is uncomfortable is not automatically harmful, and a food tolerated by someone else is not automatically right for you.
It can help to add one familiar food or texture at a time and notice the overall pattern over several occasions. There is no need to race. If a narrowing or previous obstruction has been identified, use the specific fibre and texture advice from your specialist rather than general gut-health advice.
Nutrition questions for your care team
IBD can affect iron, vitamin B12, folate, vitamin D and other nutrients, depending on inflammation, diet, medicines and surgery. Blood tests and clinical review—not symptoms alone—help decide whether a supplement is needed. Taking supplements “just in case” can be unhelpful and sometimes unsafe.
Bring your care team practical questions: Is my weight stable? Are there blood results we are monitoring? Do I need a different eating approach while symptoms are active? When should I broaden foods again? If eating feels stressful or fear is driving restriction, say so early; nutrition care should protect both physical health and quality of life.
One question to take with you
What would you like your specialist or dietitian to clarify about eating during a flare versus remission?
This reflection stays in your browser; it is not collected or added to your medical record.
Sources: Crohn's & Colitis Australia · Gastroenterological Society of Australia (GESA) · Dietitians Australia
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General gut-health education from your care team. It doesn't replace advice from your doctor or an Accredited Practising Dietitian — please talk to them about your own situation.