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Digestive health

IBS dietitian

IBS is a common gut condition causing pain, bloating and bowel changes. A dietitian can guide you through the low FODMAP diet step by step if it suits you.

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Understanding the condition

Irritable bowel syndrome (IBS) is a common digestive condition that causes lower abdominal pain or discomfort, bloating, wind and changes in bowel habits, from diarrhoea to constipation.1 Tests usually come back normal, so a doctor makes the diagnosis after ruling out other conditions such as coeliac disease and bowel cancer.1 Symptoms tend to come and go, and in some people they flare with hormone changes, which is why a personalised approach to eating matters.1

A dietitian helps you work out which foods affect you. The Monash University low FODMAP diet is one option, and it is best followed with a dietitian and only once a doctor has diagnosed your symptoms.2 It has three steps: a short low FODMAP phase, usually two to six weeks, then reintroduction of FODMAP groups one at a time, then personalisation, where you return to the widest, most varied diet you can tolerate.3,4 It is not meant to stay restrictive. Fibre, regular meals and other lifestyle changes may also help.1

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IBS dietitian

What to look out for, and how we help

Symptoms are a guide, not a diagnosis. Your GP confirms the diagnosis; our team helps you manage it day to day.

What you might notice

  • Lower abdominal pain or discomfort
  • Bloating, wind and a swollen tummy
  • Diarrhoea, constipation, or a mix of both
  • Symptoms that come and go and may flare around periods in some women
  • Normal test results once your doctor has ruled out other conditions
  • Red flag: see your doctor promptly if you notice blood in your stools, unexplained weight loss, fever or severe diarrhoea. These are not typical of IBS and need medical review before any diet changes.

How our team helps

  • Assessment of what you eat, your symptoms and your medical history, including the tests your doctor has done
  • A personalised eating plan built around your symptom and food diary, with practical fibre and meal pattern advice
  • Guided low FODMAP diet: the short low FODMAP phase, structured reintroduction and personalisation
  • Label reading and shopping skills so you can follow the plan without guesswork
  • Cooking demonstrations and meal ideas that keep your diet varied and enjoyable
  • Review appointments, with coordination with your GP and pharmacist

Your PDC care team

The teams and services that most often support people with this condition. They work from one shared plan, and one GP referral reaches all of them.

Allied health teams

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Terms explained

Plain English explanations for this condition are being added.
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Sources and clinical review

Our care follows the Monash University three step low FODMAP process, with diagnosis and the assessment of red flag symptoms led by your doctor.

  1. Healthdirect Australia. Irritable bowel syndrome (IBS). Sydney: Healthdirect Australia; reviewed December 2024.
  2. Monash University. About FODMAPs and IBS. Melbourne: Monash University; undated page, accessed 2026.
  3. Dwyer E. The 3 steps of the FODMAP diet. Monash University Low FODMAP Diet blog. Melbourne: Monash University; 2018 Jan 15.
  4. Monash University Department of Gastroenterology. Treating IBS with a 3-Step FODMAP Diet [information sheet]. Melbourne: Monash University; 2026.
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Common questions

Do I need a doctor's diagnosis before trying the low FODMAP diet?
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Yes. Monash University advises that the diet should not be followed unless a doctor has diagnosed your digestive symptoms, because other conditions such as coeliac disease can look similar. See your GP first, then we can guide the diet.

Is the low FODMAP diet a lifelong diet?
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No. The low FODMAP phase is short, usually two to six weeks. You then reintroduce foods in a planned way to find your triggers and return to the most varied diet you can tolerate. It works best with dietitian support.

Why should I see a dietitian for the low FODMAP diet?
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The diet is complex, and cutting out many foods without a plan can leave your diet narrow and your triggers unclear. A dietitian keeps it nutritionally balanced, guides reintroduction and helps you interpret your symptom diary.

Will the low FODMAP diet fix my IBS?
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Some people notice less pain and bloating within the first few weeks, but not everyone responds. The diet is one option alongside fibre advice, regular meals and other care your doctor recommends, and we review how you are going.

Do I need a referral to see a dietitian for IBS?
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No referral is needed for private appointments. A Medicare rebate needs a GP Chronic Condition Management Plan and a GP referral, and applies to up to five eligible allied health services a calendar year. Private health extras, NDIS or DVA funding may also apply, so ask us when you book.

Not sure where to start?

Tell us what is going on and we will point you to the right discipline, or to more than one. Most people start with a single appointment and leave with a plan the rest of the team can see.

Or go straight to a service

Phone (08) 6110 0570 · Medicare, NDIS, DVA and private options across our services

For GPs and health professionals

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