Why Going Gluten-Free Didn't Fix Your Bloating (Psst: It Might Not Be Gluten At All)

Have you cut out bread, pasta and crackers out of your diet - yet you're still bloated? You gave up gluten, said goodbye to sourdough. You read labels religiously.

And yet...you're still bloated, even after going gluten free.

You are not imagining it.

It's just possible that gluten was never the actual problem in the first place.

If this sounds like you, keep reading.

There's actually another compound in wheat that might be the real culprit. It's called fructan, and it doesn't get nearly enough attention as it deserves.

What Is a Fructan?

Fructan is a type of carbohydrate - specifically, a chain of fructose molecules that your body can't fully break down. Because they're hard to digest, they pass through to your large intestine relatively intact, where your gut bacteria ferment them.

For some people, that fermentation happens smoothly. For others, it causes bloating, gas, abdominal pain, and changes in bowel habits.

Fructans fall under a group of short-chain carbohydrates called FODMAPs (Fermentable Oligosaccharides, Disaccharides, Monosaccharides and Polyols). If you've ever heard of the low-FODMAP diet, fructans are a big part of that story.

The Wheat Connection: Gluten vs. FODMAP

Here's where it gets interesting. Wheat contains two very different components that can affect digestion:

• Gluten - the protein everyone talks about

• Fructans - the carbohydrate most people have never heard of

When people go gluten-free and feel better, the assumption is that gluten was the problem. But research suggests fructans may actually be the main driver of symptoms for many people without coeliac disease.

A landmark study published in the journal Gastroenterology (Skodje et al., 2018) gave 59 people who believed they had non-coeliac gluten sensitivity a randomised, double-blind trial. Participants received bars containing either gluten, fructans, or a placebo.

The result? Fructans triggered significantly more digestive symptoms than gluten or the placebo.

In other words - for many people, it might not be the gluten causing the problem at all.

Why Do Fructans Matter?

There are few reasons.

First, a gluten-free diet is not automatically a fructan-free diet. Some gluten-free products contain high-FODMAP ingredients like chicory root (inulin) or certain corn-based flours. So if you've gone gluten-free and are still symptomatic, this could explain why.

Second, you might not need to avoid gluten as broadly as you think. If fructans are your issue rather than gluten itself, sourdough bread - which is lower in fructans due to the fermentation process - may be tolerated much better than regular bread, which is higher in fructans.

Third, and importantly - coeliac disease is a completely different situation. Coeliac disease is an autoimmune condition where gluten triggers an immune response that damages the small intestine. If you haven't been tested, it's worth doing before making major dietary changes. You need to be eating gluten for the test to be accurate, so don't cut it out first.

Where Else Are Fructans Found?

Fructans aren't only in wheat. They're also found in:

• Onion and garlic (two of the highest sources) - an avoidance to these is a clear alarm bell to me for fructan intolerance

• Leeks

• Asparagus

• Artichokes

• Rye and barley

• Some fruits like watermelon and nectarines

This is why some people cut out wheat, feel somewhat better, but still have symptoms - they're still getting a significant fructan load from onion, garlic, and other foods in their diet.

What Can You Do And Is A Low FODMAP Diet Needed?

1. Get tested for coeliac disease first. Before cutting anything out long-term, speak to your GP. It's a simple blood test - but you do need to be eating gluten for it to be accurate.

2. Work with a nutritionist. A low-FODMAP approach requires guidance. It's a short-term identification protocol designed to pinpoint your specific triggers - not a forever plan. Working with someone who understands the process means you avoid unnecessarily cutting out foods for life.

3. Don't assume you need to go fully gluten-free. For those without coeliac disease or a wheat allergy, the goal is to understand your individual triggers - not to follow the most restrictive diet you can find. Restriction is rarely the answer long-term.

4. Think about personalisation. Some people tolerate small amounts of fructans well. Others are more sensitive. Understanding your personal threshold - with proper support along the way - is far more empowering than a blanket elimination approach.

The Main Takeaway If You Are Still Bloating After Going Gluten Free

If you've been confused about gluten and your gut, fructans are well worth understanding - they're a real piece of the puzzle that often gets overlooked in mainstream wellness conversations.

Symptoms are simply your body communicating. When working with people, my main goal isn't to restrict everything that might cause a problem. It's to understand what your gut actually needs, and help you build a way of eating that feels good and sustainable for the long term.

If you've been dealing with ongoing bloating, digestive discomfort, or confusion around food reactions, I'd love to help you get to the root of it and figure things out.

Book a free discovery call to chat. Let's work out what's actually going on for you.