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Presentations

Liz Purcell, AdvAPD

Inflammatory Bowel Disease (IBD)

26 Sep, 2025

Exploring current medical nutrition therapies in IBD

The presentation covers: 

  • Overview of IBD:
    • Definitions, types (Crohn’s disease, ulcerative colitis, unclassified IBD, microscopic colitis), prevalence and diagnosis challenges.
    • Causes and risk factors: genetics, environment, immune response, urban diets, microparticles, and the “genes load the gun, environment pulls the trigger” concept.
    • Symptoms and complications: abdominal pain, diarrhoea, anaemia, malnutrition, psychological impact.
    • Medical treatments: corticosteroids, immunosuppressants, biologics, JAK inhibitors, S1P modulators, and surgical options.
    • Advances in diagnostics: bedside ultrasound, enhanced endoscopic techniques, cancer surveillance.
  • Nutrition therapies:
    • Exclusive Enteral Nutrition (EEN): gold standard in paediatrics, emerging evidence in adults, Logan Hospital trials.
    • Crohn’s Disease Exclusion Diet (CDED) and CD-Treat approaches.
    • FO-SHORE diet in UC, low FODMAP diet for functional symptoms, Mediterranean and plant-based diets.
    • Evolving role of fibre, prebiotics, and probiotics (limited role in Crohn’s, selective in UC).
    • The EEN paradox: why a processed formula works despite links between ultra-processed foods and IBD.
    • Nutrient deficiencies: iron, B12, vitamin D, calcium, zinc.
  • Practical dietetic strategies: supporting adherence, tailoring plans, bridging to surgery, patient support.
  • Future directions: AI in diagnostics and flare prediction, microbiome research, nutrigenomics, metabolomics, digital health tools, and psychological support.
  • Emphasis on multidisciplinary care: dietitians, gastroenterologists, IBD nurses, and psychologists.

Hosted by Robyn Perlstein, APD

Read a review of the presentation here

Watching this presentation and completing the assessment can contribute towards assessable Continuing Professional Development hours

About the Presenter:

Liz Purcell is an Advanced Accredited Practicing Dietitian, with more than 25 years’ experience. Throughout her career, Liz has developed extensive clinical expertise in a range of practice domains and across the continuum of care but harbors a particular interest and has advanced clinical knowledge in Gastroenterology and Intensive Care nutrition. 

Over the past few years, Liz has published research in Extended Scope of Practice MOC and Inflammatory Bowel Disease and represented her profession Nationally and Internationally in these areas, contributing towards the development of National Guidelines, Australian Standards and Action plans.

Registration includes:

  • Access to a recording of the presentation
  • Presentation notes
  • Assessment quiz and certificate
  • Suggested further reading

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