What Is SIBO and Why Does It Happen?
SIBO stands for Small Intestinal Bacterial Overgrowth, a condition where excess bacteria begin to build up in the small intestine. While bacteria naturally live throughout the digestive tract, they’re not meant to thrive in the small intestine.
When they do, it can interfere with how your body digests food, absorbs nutrients, and manages inflammation.
Scientific Validation
Research shows SIBO is a complex condition connected to wider gut imbalances. Looking at the whole microbiome is key to understanding recurring symptoms
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What Can Contribute to SIBO?
SIBO There isn’t just one cause. SIBO can develop from multiple underlying issues, including:
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Slow gut motility (often due to stress, medications, or previous infections
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Food poisoning or bacterial infections
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Structural problems like scar tissue or diverticula
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Low stomach acid, which makes it easier for bacteria to grow
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Poor bile or enzyme flow, affecting digestion and clearance
SIBO can arise after ongoing gut challenges, high stress, or repeated antibiotic use. That’s why it helps to explore what might be driving your symptoms.
Common SIBO Symptoms
SIBO is often linked with frustrating digestive symptoms that can interfere with daily life. Common issues people report include:
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Persistent bloating, especially after meals
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Excessive gas or burping
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Abdominal discomfort or cramping
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Diarrhea, constipation, or a mix of both
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Fatigue and brain fog linked with poor digestion
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Nutrient deficiencies over time if food isn’t absorbed properly
If these sound familiar, testing may be the next step. Many people find that their symptoms keep coming back after seeing different specialists, such as naturopaths or doctors, and the trial-and-error approach quickly becomes frustrating and expensive.
Types of SIBO
There are three main types of SIBO, based on the dominant gas produced by the bacteria in your gut:
Hydrogen-dominant SIBO
Usually linked to diarrhea and fast transit time.
Methane-dominant SIBO
More commonly causes constipation, bloating, and gas.
Hydrogen sulfide SIBO
May present with gas that has a sulfur (rotten egg) smell and more systemic symptoms.
Testing can help determine the type you have, which is important because different types often require different treatment plans.
SIBO Testing and Why It Matters
At The Gut Guy, we don’t guess. We work with functional testing (like a stool analysis) to help identify if SIBO is present and what else might be affecting your gut health.
By exploring the influences and patterns in your symptoms, we can create a plan that’s personalised to you, rather than relying on a one-size-fits-all approach.
How Our SIBO Testing Process Works?
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Step 1: Complete Microbiome Mapping Test
We use a complete microbiome mapping test (gut health test) to see which microbes have specifically overgrown and may be contributing to your SIBO symptoms.
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Step 2: Personal Gut Report & Review
Our gut health advisor will walk you through your test result and provide more clarity on your result.
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Step 3: SIBO-Specific Support Plan
We’ll build a structured plan to restore healthy gut balance.
Meet Josh Williams The Gut Guy
Certified Gut Restoration Nutritional Advisor
Locally owned and operating in Melbourne, Josh offers 100% online and phone-based consultations, so you can access expert gut health support from the comfort of your own home, no matter where you live in Australia.
With three degrees in Biomedical Science and Biotechnology, and a Master’s in Biomedical Science focused on gut health, Josh combines academic expertise with real-world insight. As a Certified Gut Restoration Nutritional Advisor, he takes a clear, step-by-step, evidence-based approach to help you understand your symptoms and confidently explore your gut health options
The Benefits of Choosing a Certified Gut Health Consultant For SIBO
Get Clarity on Recurring Symptoms
Bloating, gas, and digestive discomfort often come back even after diets or supplements. Testing helps uncover patterns linked to SIBO so you can stop guessing.
Personalised Support for Your Gut
No two cases of SIBO are the same. We provide guidance based on your microbiome test results and lifestyle, not a generic protocol.
Evidence-Based, Not Trial and Error
Instead of cycling through supplements or restrictive diets, we use science-backed testing to highlight what’s actually influencing your gut.
Online Support Wherever You Are
All sessions are run online, making it easy to access help for SIBO symptoms from home, no matter where you live.
Save Money on Random Appointments
Seeing multiple specialists without lasting results can be costly. Testing first helps focus your efforts so you’re not wasting money on guesswork.
Ongoing Guidance for Lasting Change
SIBO can feel like a cycle. That’s why we offer follow-up support and check-ins, so you have ongoing guidance while making changes.
See How Others Have Transformed Their Gut Health
Our clients’ success stories bloom like vibrant flowers in a thriving garden, each one a testament to renewed gut health and vitality.
If You Feel Like Our Approach Could Help, Here’s What to Do Next
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Discover how gut health impacts digestion with your free sample report. Enter your details to access it instantly along with your question to ask The Gut Guy
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