Going Gluten-Free: How Gluten Affects Digestion, Inflammation, and Overall Health

Why Do People Go Gluten-Free?

Many people choose to reduce or eliminate gluten for a range of health reasons. For some, it’s medically necessary—such as in Coeliac Disease—while others may experience gluten sensitivity or digestive discomfort after eating gluten-containing foods.

A gluten-free diet is often used to:

While it may seem restrictive at first, there are now more gluten-free options available than ever before, making the transition far easier than it used to be.

What Is Gluten and Where Is It Found?

Gluten is a protein found in certain grains, particularly:

  • wheat
  • barley
  • rye
  • oats (often contaminated unless certified gluten-free)
  • spelt and kamut (ancient wheat varieties)

It gives bread and baked goods their elasticity and structure—but not everyone can digest it efficiently.

How Gluten Affects Digestion and the Gut

For some individuals, gluten can be difficult to break down, placing extra strain on the digestive system.

Common digestive effects

In people with gluten sensitivity or coeliac disease, gluten can damage the lining of the small intestine, affecting nutrient absorption.

Gut health and the intestinal lining

Gluten may contribute to increased intestinal permeability (often referred to as “leaky gut”) in sensitive individuals. This allows partially digested food particles and toxins to pass into the bloodstream, triggering immune responses.

Gluten, Inflammation, and the Immune System

When gluten is poorly tolerated, it can activate the immune system and promote chronic inflammation.

  • In coeliac disease, gluten triggers an autoimmune attack on the intestinal lining
  • In non-coeliac sensitivity, it may still provoke low-grade inflammation
  • This inflammation can extend beyond the gut and affect joints, skin, and other systems

Reducing gluten intake can often help calm inflammatory pathways in susceptible individuals.

The Gut–Brain Connection: Mood, Brain, and Energy

Emerging research highlights the strong connection between gut health and the brain.

Mood and mental health

Gluten-related inflammation and gut imbalance may contribute to:

  • brain fog
  • anxiety
  • low mood or irritability

Energy levels

Poor absorption of key nutrients (such as iron, B vitamins, and magnesium) due to gut irritation can lead to:

  • fatigue
  • low stamina
  • reduced mental clarity

For some people, removing gluten results in noticeable improvements in both mood and energy.

How Common Is Gluten Sensitivity?

It’s estimated that around 1 in 100 Australians have coeliac disease, but many more may experience non-coeliac gluten sensitivity or intolerance. Because symptoms can be subtle or delayed, gluten-related issues are often overlooked.

Gluten-Free Grains and Alternatives

The good news is there are plenty of nutritious gluten-free grains and starches available.

Naturally gluten-free grains

  • quinoa
  • rice
  • corn (maize)
  • millet
  • sorghum
  • buckwheat
  • amaranth
  • teff
  • tapioca

These provide fibre, minerals, and variety without the inflammatory effects gluten may cause in sensitive individuals.

Gluten-Free Flours, Nuts, Seeds, and Legumes

Many alternative flours can be used to create nutrient-dense meals and baked goods.

Popular options

  • almond flour
  • coconut flour
  • chickpea (besan) flour
  • lentil flour
  • arrowroot
  • potato flour
  • carob
  • sesame seeds
  • sunflower seeds
  • chestnut flour
  • soy flour

These alternatives often provide more protein, healthy fats, and micronutrients than refined wheat flour.

Practical Tips for Going Gluten-Free

  • Focus on whole, naturally gluten-free foods rather than processed substitutes
  • Read labels carefully—gluten can appear in sauces, additives, and processed foods
  • Consider guidance from organisations like the Coeliac Society of Australia
  • Be mindful of cross-contamination, especially when dining out

A Balanced Perspective

Not everyone needs to avoid gluten. However, for those with sensitivity, intolerance, or autoimmune conditions, removing gluten can significantly improve digestive comfort, reduce inflammation, and enhance overall wellbeing.

Your gut is central to nearly every aspect of health—from digestion to mood and energy.

“When the gut is supported, the whole body begins to function more clearly, calmly, and efficiently.”

HELPFUL GLUTEN FREE RESOURCES

Gluten free foods
Orgran www.orgran.com

Ledawww.ledanutrition.com

Freedom Foods www.freedomfoods.com.au

Basco www.basco.com.au

Additive Code breaker – getwell.com.au or amazon.com

Introduction to food intolerance – fedupwithfoodadditives.info

Coeliac disease
Coeliac Society – www.coeliac.org.au