Overview

Basics of SIBO

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Basics of SIBO

Medically reviewed by:
Dr James Freeman

SIBO has long been misunderstood, mistreated, and misdiagnosed.

SIBO is one of the leading causes of IBS and is treatable and manageable, yet sufferers often go years without an answer or treatment.

Much of what we know has come to light in recent years, so many medical professionals are yet to have a deep understanding of:

  • the signs and symptoms
  • how to test for it
  • how to diagnose it
  • the best treatment options are based on the most up to date medical literature
  • underlying causes and risk factors

Instead, the umbrella diagnosis (which isn’t a diagnosis) of IBS is often used.

The ‘basic’ tab has been designed to help you understand the basics of SIBO, so you can better advocate for your gut health.

Find out more>
Causes of SIBO - The science of the small intestine

What is SIBO/ what is IBS

We explain what SIBO (small intestinal bacterial overgrowth) is. We also explain what SIFO is (small intestinal fungal overgrowth).

We go through the symptoms of SIBO and SIFO based on the medical literature.

We also explain what IBS, IBS-M, IBS-D is as these are often given as umbrella diagnoses when SIBO has been missed.

Dr Freeman comments on why SIBO is frequently missed from his professional perspective.

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All about the small intestine

Here we explain what your small intestine does and why it’s essential to your gut and overall health. We talk about it…

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Causes of SIBO - SIBO and food poisoning
Causes of SIBO - The science of the small intestine

Types of SIBO

We explain the different types of SIBO, of which there are three. They all present with various symptoms.

  • SIBO-methane
  • SIBO-hydrogen
  • SIBO-hydrogen sulfide

The last was only recently uncovered, and that goes to show how quickly we are learning about the gut and how much we still have to learn.

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Diagnosis of SIBO

Here we explore how SIBO is diagnosed to help you get to the bottom your gut issues depending on the resources you have access to.

Many routine tests (performed by doctors) come back normal despite severe SIBO. That is because the bacteria that cause SIBO is supposed to be there, just not where it has started to grow.

We explore:

  • How SIBO is best diagnosed
  • Why do colonoscopies/endoscopies often show nothing for SIBO
  • Why stool testing is not considered adequate for SIBO

Read more>

Causes of SIBO - SIBO and food poisoning
Causes of SIBO - The science of the small intestine

Why SIBO is underdiagnosed

We explain why SIBO is underdiagnosed and why you might be struggling to find a doctor who can get to the bottom of your gut issues.

We do a Q and A with one of our doctors – Dr Freeman, about this issue.

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Patient experience: SIBO and weight loss

Patient experience: SIBO and weight loss

I had hydrogen SIBO, and I lost a lot of weight during that time for two reasons. One of them is far less talked about, and I think it needs to be. The first reason was 1) the type of SIBO I had extracted energy from the food I ate. And reason 2) was the disordered eating habits I developed due to the SIBO.

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Patient experience: SIBO and bloating

Extreme bloating and gas, caused by undiagnosed SIBO – I struggled with SIBO for years. Like many, I had no idea. I was constantly told things like: “Bloating is normal”, “Maybe it’s just your period”…

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Patient experience: SIBO and weight gain in the midsection

Patient experience: SIBO and weight gain in the midsection

I was scared to take too many rounds of antibiotics as I think other antibiotics may have triggered my SIBO in the first place. That’s why I decided to take antibiotics for only two of my four rounds of treatment. Both treatments seemed to work equally as effectively, but everyone is different.

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Patient experience: SIBO and hair loss

Patient experience: SIBO and hair loss

After developing SIBO (which I was unaware I had at the time because I didn’t even know what it was) I started to notice my once long hair was thinning and getting shorter. At first, it was nothing drastic, and I’d hide it with styling and product, but over time the issue progressed (and so did my SIBO). My hair was fine, but I had lots of it.

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