SIBO and Bloating: Why SIBO Is Only the Starting Point

You’ve cut out gluten and dairy. You’ve tried probiotics and added more fibre. Nothing has worked.Then one day you come across the term SIBO. And suddenly everything clicks. The progressive bloating throughout the day, the reactions to healthy foods, the fact that nothing you’ve tried has ever fully worked- it all makes sense. Finally, a reason.

SIBO very well might be your answer. But if you’ve already gone down the SIBO road and are still struggling- or you’re just now discovering it and wondering if it’s the missing piece- I want to offer you something that might reframe everything: SIBO is often the root cause of chronic bloating, but in most of my clients, it’s not the only cause. Until you address the full picture, the bloating will keep coming back.

Let me show you what I mean.

So What Is SIBO, Exactly?

SIBO- Small Intestinal Bacterial Overgrowth- is exactly what it sounds like. Bacteria have grown in numbers in your small intestine and are fermenting your food before your body has a chance to properly digest it. This produces hydrogen, methane, or hydrogen sulphide gas that causes that characteristic distended bloating.

And here’s the part that surprises most people: up to 80% of people with an IBS diagnosis actually have SIBO as the underlying cause. That’s why it’s often the first place I look when a client comes to me with long-term bloating that isn’t improving.

What if you’ve already treated SIBO and the bloating came back? What if your test came back negative but nothing else explains your symptoms? That’s when it’s time to widen the lens- because SIBO is almost never the whole story.

Why SIBO Is Rarely the Whole Story

Here’s what I see in my practice every single day: SIBO is a piece of the puzzle- but almost never the only piece. This is especially true for the clients I tend to work with- people who have been bloated for most of their lives, have already tried multiple protocols, and still aren’t getting lasting relief. In these more complex cases, co-existing factors almost always keep symptoms going even after SIBO clears.

Here’s what those factors usually are:

1. Chronic Stress & a Dysregulated Nervous System

Your gut isn’t just a digestive organ- it’s deeply connected to your nervous system. Fight-or-flight mode slows digestion way down. Food sits longer in your gut, gas builds up, and bloating follows. No amount of dietary restriction or gut supplements will fully fix that if your nervous system runs on overdrive.

I’ve lived this myself.

At one point in my life I finally understood how much chronic stress was driving my daily bloating. As a typical Type A perfectionist, I hit the gym every morning at 5am before work, ate a perfect whole foods diet, and followed the strictest gut health regime you could imagine. Yet I still woke up every day looking a little pregnant. Nothing worked.

Then I went to Mexico and- for the first time in years- I actually relaxed. I slept in, skipped workouts, ate gluten and sugar, and just let go.

All of my GI symptoms went away.

That trip was a huge eye opener. It taught me that sometimes it’s not about what you eat — it’s about what state your body is in when you eat it. My gut never had a real chance to heal until I calmed my nervous system. That’s why nervous system regulation is never optional in my coaching- it’s part of the foundation.

2. Dysfunctional Breathing Patterns

This one surprises almost everyone- but your breathing pattern directly impacts your digestion.

Your diaphragm isn’t just for breathing- it plays a critical role in digestion too. Deep, proper inhalation moves the diaphragm downward, creating space for your abdominal organs to shift and your stomach to expand comfortably as you eat. Chronic shallow breathing- into your chest instead of your belly- keeps the diaphragm tight and high. Your stomach has nowhere to go when food comes in, so it pushes outward instead of expanding downward. The result is visible, uncomfortable bloating immediately after eating, even from small or healthy meals.

Sometimes called abdomino-phrenic dyssynergia, this pattern means your diaphragm and abdominal wall aren’t working in sync. It’s especially common in people with gut-brain axis dysfunction and chronic bloating. It can also cause air swallowing, increased abdominal pressure, poor vagal tone, and a nervous system stuck in fight-or-flight mode.

The good news: it’s completely reversible. Diaphragmatic breathing, posture correction, and nervous system regulation can all make a significant difference- even when food isn’t the issue at all.

3. . Large Intestinal Dysbiosis

This is one of the most overlooked pieces of the chronic SIBO bloating puzzle- and one of the most important.

Even after SIBO clears, an imbalanced large intestine microbiome can keep symptoms going. Large intestinal dysbiosis requires a completely different approach than SIBO treatment- what works for the small intestine doesn’t work for the large intestine. Treating one without addressing the other is one of the main reasons people improve temporarily but never fully recover.

Comprehensive stool testing is a key part of my approach for exactly this reason. It shows us what’s overgrown, what’s depleted, and what needs rebuilding- so we’re working with real data, not guesswork.

4. Chronic Inflammation

Sometimes bloating and digestive issues don’t just come from the gut- chronic inflammation elsewhere in the body drives them.

Endometriosis, for example, is incredibly common in people with SIBO and often goes undiagnosed for years. It causes inflammation, scarring, and adhesions in the abdominal cavity that physically impair gut motility and contribute to ongoing bloating. Other inflammatory conditions that commonly impact gut function include Hashimoto’s, chronic infections, histamine intolerance, and MCAS.

Systemic inflammation makes your gut more sensitive, reactive, and prone to bloating- even when your diet is clean and everything looks fine on paper. Treating just the bacteria or just the food won’t get you there if your whole system is inflamed and out of balance.

If you’ve done all the right gut work and still aren’t getting results, chronic inflammation could be the missing piece nobody has looked at yet.

Why Getting the Full Picture Matters

If you’ve been chasing bloating remedies for months or years- trying supplements, elimination diets, and gut protocols- and keep ending up back at square one, the issue probably isn’t your commitment. It’s that you’ve been treating one piece of a multi-piece puzzle.

SIBO testing is a great starting point- but it’s not the whole answer. For the clients I work with- people who have been bloated for most of their lives and have already tried everything- it’s almost never enough on its own.

That’s why I take a whole-gut approach with every client, looking at the small intestine, the large intestine, digestion, inflammation, the nervous system, and lifestyle patterns all at once. It’s the only way to break the cycle of temporary relief followed by rebound symptoms and finally get to a place where your gut feels good consistently.

So… What Should You Do?

If any of this resonates, here’s where to start.

Test first. Don’t jump into a protocol without knowing what you’re actually dealing with. Testing reveals what’s really going on before protocols are created- and it saves you a lot of time, money, and frustration going down the wrong road.

Zoom out. Consider the bigger picture. Motility, stress, breathing patterns, large intestinal health, and inflammation all matter just as much as what’s happening in the small intestine. If you’ve only ever looked at one piece, that’s likely why you’re still stuck.

Get support. You don’t have to figure this out alone- and honestly, the more complex your history, the more important that is. Working with someone who understands the gut as a whole system, and who has navigated these complicated cases before, makes all the difference.