Can I follow the SIBO Restore Diet without a practitioner?

The food lists are only part of it. Stage assignment depends on your subtype, test results, treatment phase and history, and safety steps come first, including coeliac screening before Stage 1 and a medication review. It is designed to run alongside clinical care rather than on its own.

The SIBO Restore Diet: A Staged Approach to Rebuilding Your Gut

Q: How long do I stay on the SIBO Restore Diet?

There is no fixed duration. Stage 1 is usually around two weeks. Stage 2 runs for the length of antimicrobial treatment, typically five to ten weeks. Stages 3 to 5 are individualised and go at the pace your gut allows. The framework finishes when wheat has been trialled and you move into Digestive Resilience.

Q: Is the SIBO Restore Diet the same as low FODMAP?

No. Low FODMAP identifies triggers by removing them. The SIBO Restore Diet reduces fermentable load only where clinically indicated, then systematically rebuilds tolerance and microbial diversity. One is a diagnostic tool, the other is a restoration framework with a defined destination.

Written by Karly Raven, BHSc - Naturopath and SIBO Specialist, Nourished Gut Clinic
Last updated: August 2026

You have tried low FODMAP. Possibly anti-inflammatory eating, possibly carnivore. Nothing holds. The bloating and discomfort keep returning, your food list has got shorter every year, and you are left wondering whether you are helping your gut or slowly making things harder.

Most gut healing diets fail for the same reason. They tell you what to remove and never tell you how to get it back.

That is why I developed the SIBO Restore Diet, the dietary expression of my Feed Forward methodology. It is a five stage food restoration framework that manages symptoms during treatment while progressively rebuilding microbiome diversity, ending in a sustainable pattern I call Digestive Resilience.

Note: this framework was previously published under an earlier name. It has since been revised and is now the SIBO Restore Diet.

What the SIBO Restore Diet actually is

It is a staged restoration framework, not an elimination diet. The distinction matters.

It draws on low fermentation and low FODMAP principles but is not the same as either. The key difference is that restriction is treated as a temporary therapeutic phase with a defined end point, never as a long term dietary identity.

Every stage exists to set up the next one. You should always be moving forward. If your food list is narrowing rather than widening, something has gone wrong with the plan.

At the Nourished Gut Clinic it is used inside the Nourished Gut Program when it is clinically indicated, alongside treatment rather than instead of it.

Why most gut healing diets do not hold

Three misconceptions come up again and again in clinic.

Low FODMAP is enough to fix SIBO. It is not a treatment. It is a short term symptom management tool. Monash University, who developed it, are clear that the aim is to relax restrictions as far as possible and widen the variety of foods eaten. Long term use reduces microbiome diversity, particularly Bifidobacterium.
You have to cut all carbohydrate. You do not. The right carbohydrates, introduced at the right stage, are how you rebuild. Type 3 resistant starch, meaning cooked and cooled rice or potato, is generally well tolerated. Type 2 resistant starch is held back during active methane overgrowth, which is a staging decision rather than a permanent rule.
All SIBO diets are the same. Hydrogen, methane and hydrogen sulphide require different dietary modifications. A single approach applied to all three will work for some people and quietly fail others.

The five stages of the SIBO Restore Diet

Each stage builds on the one before it, and foods carry forward. Stage assignment is based on your presentation, test results and treatment phase, not on a fixed calendar. Some people revisit an earlier stage after a flare, and that is information rather than failure.

Stage 1: Low Fermentation Phase

Pre-treatment and the first couple of weeks. Reduces the substrate available to bacteria and calms acute symptoms. This is a therapeutic phase and never a long term diet.

Stage 2: Treatment Phase

Runs alongside antimicrobial therapy, typically five to ten weeks. The food range widens slightly while treatment does its work.

Stage 3: Prebiotic Introduction

Begins after treatment, once retesting is clear. Targeted prebiotics start feeding beneficial bacteria again. This stage goes slowly and deliberately.

Stage 4: Microbiome Expansion

Garlic, onion, fermented foods and a broader range of grains come back in. Start small, monitor, build.

Stage 5: Restoration

Full dietary expansion. Remaining foods are reintroduced, with wheat last.

The destination: Digestive Resilience

This is not a sixth stage, and I am deliberate about not numbering it. It has no food list, no restrictions and no criteria to pass. It is a Mediterranean shaped pattern built around 40 or more different plants weekly, fish twice a week, legumes three times, plenty of herbs and olive oil. Foods that were difficult earlier get retried periodically, because tolerance keeps shifting after treatment and nothing is closed off permanently.

Your SIBO subtype changes the plan

The base framework applies to everyone. Subtype modifications layer on top.

Hydrogen dominant. Follow the framework as written. No additional modifications needed.
Methane, or IMO. Fermentable fibres such as inulin and FOS feed methane production and are held back during active treatment. Fibre diversity, hydration and constipation support move up the priority list.
Hydrogen sulphide, or ISO. Hydrogen sulphide cannot be measured by breath testing in Australia and the proposed criteria for it are not validated, so this pattern is recognised and treated clinically on presentation rather than by a test result. Sulphite preservatives are avoided, animal protein is reduced in favour of plant proteins, and cysteine containing supplements are held. Some people need a broader low sulphur approach, which is an individualised piece of work.

If you are not sure which subtype you have, start with the three types of SIBO, then SIBO breath testing explains how hydrogen and methane are measured.

Diversity is the point, even early on

Even in Stage 1, the target is at least 30 different plant foods a week, and the framework makes over 100 distinct plant foods available at that stage.

That is a deliberate departure from a standard low FODMAP approach. The American Gut Project (McDonald et al., mSystems, 2018) found greater microbial diversity and more butyrate producing bacteria in people eating more than 30 plant types weekly compared with fewer than 10. It is observational research rather than a guideline, but it is a strong clinical heuristic and it shapes how I stage food.

You cannot rebuild a microbiome on a shrinking food list. That is the whole argument.

Frequently Asked Questions

How long do I stay on the SIBO Restore Diet?

There is no fixed duration, and that is deliberate. Stage 1 is usually around two weeks. Stage 2 runs for the length of your antimicrobial treatment, typically five to ten weeks. Stages 3 to 5 are individualised and go at the pace your gut allows. The framework finishes when wheat has been trialled and you move into Digestive Resilience. Anyone still in Stage 1 months later has been left somewhere they were never meant to stay.

Is the SIBO Restore Diet the same as low FODMAP?

No. It borrows some principles but the intent is opposite. Low FODMAP identifies triggers by removing them. The SIBO Restore Diet reduces fermentable load only where clinically indicated, then systematically rebuilds tolerance and microbial diversity. One is a diagnostic tool. The other is a restoration framework with a defined destination.

What if I flare when I reintroduce a food?

Some wind and bloating during reintroduction is normal and often means beneficial bacteria are being fed. It is not a sign you have to retreat. We slow the pace, adjust the portion, and try again rather than removing the food permanently. If symptoms are genuinely disruptive, that is worth reviewing with your practitioner, because it may point to something unaddressed rather than to the food itself.

Can I follow it without a practitioner?

The food lists are only part of it. Stage assignment depends on your subtype, your test results, your treatment phase and your history, and there are safety steps that come first, including coeliac screening before Stage 1 and a medication review. It is designed to run alongside clinical care rather than on its own.

Ready to stop guessing what to eat?

If you are tired of second guessing every meal and want a structured plan with an actual end point, this is the work we do.

If you want a practical starting point today, the free 3-Day Bloat Fix is a short plan you can begin this week.

The SIBO Restore Diet is used within the Nourished Gut Program, our six month process for rebuilding digestive function. It is application only and we take five new clients each month. The next step is a Digestive Strategy Session, a free 20 minute telehealth call booked by application, where we will tell you honestly whether it suits your case.

Karly Raven, BHSc is a naturopath, microbiome restoration specialist, and SIBO expert. She is the founder of the Nourished Gut Clinic and creator of the Feed Forward methodology and the SIBO Restore Diet. Karly works with people with IBS, SIBO, IBD and chronic gut conditions, and mentors health practitioners through karlyraven.com.

This blog is for educational purposes only and does not constitute medical advice. Please consult a qualified health practitioner before making changes to your treatment plan.