GUT FEELINGS, CLEAR MINDS: WHY GLUTEN-FREE IS SMARTER NUTRITION FOR DOGS

At Celtic Connection, we’ve always believed that true wellness starts on the inside—not just in the gut, but in the brain as well. That’s why we prioritise gut health - because digestion often affects behaviour and overall wellbeing. All of our recipes, for both dogs and cats, are formulated without gluten to reduce common dietary triggers. Why does that matter? Because research is beginning to reveal how gluten-related inflammation—once thought of as “just a grain issue”—may affect both gut health and even the brain.

The Brain: When Gluten Sparks Inflammation

A study from the University of Otago found that feeding gluten to mice caused inflammation in the hypothalamus, a region of the brain that helps regulate mood, appetite, and energy balance. While more research is needed in dogs, this study supports the idea that diet can influence gut and brain function — something we take seriously.

Some owners report changes such as hyperactivity, irritability, or 'brain fog'. In some cases, a strict gluten‑free diet has helped rebalance behaviour.

The Gut: Damaged Villi, Poor Absorption

In dogs, gluten sensitivity can trigger an immune reaction that damages the villi—tiny finger-like structures that absorb nutrients in the small intestine. The result? Poor nutrient uptake, chronic digestive issues, and lower vitality overall. We like to say: A flat intestine can’t fuel a full life.

Signs to watch for:

• Ongoing diarrhoea or repeated soft stools.

• Frequent flatulence or bloating after meals.

• Persistent itching, red or flaky skin, or repeated ear infections.

• Sudden changes in coat quality, appetite, or energy levels.

• New or worsening licking of paws or rubbing face.

The Gut-Brain Axis: One System, One Solution

Science confirms what many pet parents have sensed for years: the gut and brain are deeply connected. Poor gut health can lead to poor mental health—and vice versa. A recognised condition—paroxysmal gluten‑sensitive dyskinesia—has been documented in Border Terriers and may improve on a strict gluten‑free diet, but diagnosis relies on veterinary assessment and sometimes serology.

Signs of possible “brain fog” or neurologic change linked to gluten in dogs

• Episodes of altered awareness or vacant staring, appearing distracted or “not there” for short periods.

• Slower responses to commands, reduced alertness, or seeming confused about familiar routines.

• Reduced play drive, lethargy, or noticeable drop in sustained attention during walks or training.

• Mild incoordination, stumbling, or clumsiness that comes and goes rather than a constant limp.

• Intermittent trembling, muscle cramps, abnormal movements, or paroxysmal dyskinesia (sudden, brief movement episodes) reported in breed‑specific gluten‑sensitive syndromes.

• Changes in appetite, sleep pattern, or behaviour coinciding with other gut signs such as loose stools or chronic flatulence.

Note that these signs overlap with many other neurological, metabolic, infectious, or behavioural causes. If you notice any of these symptoms, we suggest keeping a two-to-four-week symptom and diet log (stool, skin, behaviour) while you trial one of our gluten‑free formulas and share the results with your veterinarian.

How our recipes support gut and brain health.

• Gluten-free formulas to minimise common dietary triggers.

• Whole-food ingredient focus to support healthy digestion and absorption.

• Nutritional choices aimed at reducing inflammation that can affect behaviour.

• Complete, balanced nutrition to sustain energy and cognitive function.

Frequently Asked Questions

Is gluten the same as grain sensitivity?

No. Gluten is a specific protein found in wheat, barley, and rye. Grain sensitivity can involve other grains, processing residues, or non-gluten components that also trigger digestive or skin reactions.

Is a sensitivity different from an allergy?

Yes. A sensitivity (intolerance) is a dose‑dependent reaction that can cause digestive or skin issues; an allergy is immune‑mediated and often triggered by tiny amounts of the allergen. True gluten‑driven immune disease is uncommon and best documented in Border Terriers and Irish Setters; other breeds, such as German Shepherds, Labrador Retrievers, French Bulldogs and mixed breeds, may show reactions, but allergic diagnosis requires veterinary testing or a strict elimination and reintroduction.

How long should an elimination trial run?

Run a strict elimination trial for at least six weeks, transitioning slowly over 5–7 days and avoiding new treats or supplements. Keep a daily log of stool, skin and behaviour to judge true change.

When should I see a veterinarian?

See your veterinarian promptly for weight loss, blood in the stool, repeated vomiting, severe lethargy, or any new or worsening neurological signs. Share your symptom log and videos of episodes to help with diagnosis.

Because a happy belly often leads to a happy brain—and every dog deserves both.