About Nick Dunn

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Nick Dunn BND A.P.D., AN
Managing Director & Lead Dietitian at GutCode

Nick Dunn is a highly respected and experienced gastrointestinal dietitian, leading GutCode with a commitment to redefining the approach to optimal health. As the Managing Director and lead clinician, Nick brings over fifteen years of expertise in treating complex gut conditions, specialising in evidence-based and integrative care. His approach delves deep into the root causes of gastrointestinal disorders, providing targeted solutions to empower patients towards lasting health.

Leadership at GutCode

As the Managing Director of GutCode, Nick is at the forefront of transforming dietetic care. Under his leadership, GutCode has become known for its comprehensive, personalised approach to treating gastrointestinal conditions. The clinic combines advanced diagnostics, with tailored nutrition interventions to optimise gut health. Nick’s philosophy is that no one’s health is one-dimensional, and the solutions to better health should reflect this—combining medical science with holistic dietary, supplement, and lifestyle strategies.

Nick has also contributed to the field through his role as a guest speaker at national General Practitioner and Dietetics conferences, where he has presented on IBS and the role of prebiotics in infant health. His expertise has led him to present guest webinars for Education in Nutrition on topics such as faecal microbiota transplant (FMT) for IBS and refractory IBD. His ability to break down complex topics into actionable insights has made him a sought-after presenter and a respected authority in gastrointestinal dietetics.

A Holistic Approach to Gut Health

Nick’s expertise isn’t limited to adults—he also has extensive experience working with paediatric patients, particularly those with paediatric gut conditions that require a modified, individualised approach. This experience is crucial in providing families with the tailored care needed to optimise children’s gut health and overall well-being.

At GutCode, Nick combines his leadership and clinical expertise to help patients achieve long-term, sustainable health outcomes. Whether dealing with IBS, SIBO, inflammatory bowel disease, or complex food intolerances, Nick’s integrative, results-driven approach ensures that each patient receives the best possible care and guidance on their health journey.

Professional Background & Qualifications

Nick graduated from Deakin University in 2008 with a Bachelor of Nutrition and Dietetics (BND). Since then, he has built a career that spans both clinical and community sectors, working in Melbourne and London. His training and expertise have positioned him as an industry leader in gastrointestinal health.

Nick’s comprehensive knowledge of gut health extends to functional dyspepsia, small intestinal bacterial overgrowth (SIBO), inflammatory bowel disease (IBD), coeliac disease, food intolerances, and gut microbiome health. As a Monash University-trained FODMAP dietitian, Nick has mastered the application of the low FODMAP diet for managing functional gut disorders.

Nick is also a CoBiome™ Certified Clinician and a Microbiome Guardian with experience with interpreting CoBiome reports and the development of targeted treatment programs. His clinical approach is grounded in both scientific rigor and practical, sustainable interventions that address each patient’s unique health needs.



Specialties

Nick specialises in a wide range of gastrointestinal and related health concerns, including:

  • Functional gut disorders including Irritable Bowel Syndrome (IBS) and functional dyspepsia
  • Chronic functional constipation
  • Gastroesophageal reflux disease (GORD)
  • Inflammatory Bowel Disease (Crohn’s Disease and Ulcerative Colitis)
  • Small intestinal bacterial overgrowth (SIBO)
  • Coeliac disease
  • Diverticular disease
  • Eosinophilic oesophagitis (EoE)
  • Comprehensive gut microbiome assessment (through CoBiome MetaXplore analysis) and optimisation
  • Dietary advice for faecal microbiota transplant (FMT)
  • Food intolerances and sensitivities

Scheduling a Consult

To book an appointment with Nick, please use the booking link on our website.

Speaking & Media Opportunities

Nick is passionate about sharing knowledge with broader audiences. He welcomes invitations for speaking engagements, media commentary, or as a guest on podcasts, bringing his deep expertise and approachable communication style to a variety of platforms. If you are interested in collaborating, please reach out via email at hello@gutcode.co.