Yvonne McKenzie is a specialist dietitian with 15 years of experience and an MSc in Nutrition from King’s College London. She has been acknowledged by her professional peers at the British Dietetic Association by chairing the Gastroenterology Specialist Group (2010-2012), having been a founding member since 2006. She is their Clinical Lead in IBS (since 2010). In 2012 the Department of Health selected her as a National Allied Health Professional clinical expert in Gastroenterology.


Health and Care Professions Council: Registered Dietitian, DT 07090

MSc in Nutrition, King’s College London

Post Graduate Diploma in Dietetics, King’s College London (main practical training was at Hammersmith Hospitals NHS Trust, London)

BSc in Nutrition, Food Science & Catering Management, Oxford Brookes University.


Between 1998 – 2008 Yvonne gained extensive dietetic management experience at Oxford University Hospitals NHS Trust, in particular in upper and lower gastrointestinal disorders and diseases, intestinal resection and failure, renal failure and obesity management.

Yvonne actively contributes to the evidence-based education and awareness of IBS and the low FODMAP diet, having been the lead author on UK evidence-based practice guidelines for the dietary management of IBS in adults, first published in 2010 for the British Dietetic Association. She lectures at various universities on IBS and the low FODMAP diet. She has also spoken on the dietary management of IBS, functional gut disorders and the low FODMAP diet at national conferences and study days for dietitians, gastroenterologists, GPs and other health care professionals and students.

She is a keen organic gardener, of bringing home-grown vegetables, herbs and fruit to the table. She is interested in the combination of easy, healthy vegetarian and non-vegetarian meal preparation whilst keeping energy consumption to a minimum.

Membership of Associations and Societies

  • British Dietetic Association (BDA) – member
  • Gastroenterology Specialist Group of the BDA – Clinical lead in IBS; Committee member (2006 – 12), Acting Chair (2010 – 12)
  • Food Allergy and Intolerance Specialist Group of the BDA – member
  • British Society of Gastroenterology – Associate member
  • Primary Care Society for Gastroenterology – member
  • Coeliac UK – professional member



Recent Publications

British Dietetic Association evidence-based practice guidelines for the dietary management of irritable bowel syndrome in adults. J Hum Nutr Diet. 2012; 25, 260–274. McKenzie YA, Alder A, Anderson W, Wills A, Goddard L, Gulia P, Jankovich E, Mutch P, Reeves L.B, Singer A & Lomer MCE. on behalf of the Gastroenterology Specialist Group of the British Dietetic Association.

BDA Professional Guideline (2010): UK evidence-based practice guidelines for the dietetic management of irritable bowel syndrome (IBS) in adults.

BDA Food Fact sheet on IBS (Jan 2013)

BDA Manual of Dietetic Practice (5th Edition, in publication): chapter on IBS.

Dietetics Today (the official magazine for all BDA members): articles on IBS and Non Coeliac Gluten Sensitivity.

National Association of Primary Care (napc) Review autumn/winter 2012/13: IBS dietary management: new approaches, p.52-54

NDR-UK resource on first line dietary management of IBS: Healthy Eating and Lifestyle Advice for Irritable Bowel Syndrome.

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