By Jim Willshire MRCVS, UK veterinary surgeon and Science for Pets Founder
I've been a vet for over twenty years. In that time I've cared for thousands of animals, advised countless owners, and built a career around the health of other people's pets.
But in 2024, I started paying proper attention to my own.
It started with me
Like many people who work in healthcare, I'd spent years focused outward. The animals in my consulting room, the clients in front of me, the clinical problems to solve. My own health was something I'd deal with later.
Then I came across Zoe — a personalised nutrition programme developed by scientists at King's College London. It uses continuous glucose monitoring and gut microbiome testing to build a picture of how your body responds to food. Not in general terms, but specifically. For you.
What struck me wasn't just the technology. It was the science underpinning it. The more I read, the more I found myself returning to one central idea: that the gut is not simply a digestive organ. It is deeply involved in immune regulation, metabolic signalling and communication with the nervous system.
I made changes based on what I learned. Some of them were significant. And the difference I felt was real.
That experience forced me to look more closely at something I thought I already understood.
Rethinking the gut
In both human and veterinary medicine, we have traditionally viewed the gut primarily as a digestive system. But research over the past decade has expanded that picture considerably.
In humans, the scale of the gut's role is striking. The gut wall contains more immune cells than the blood and bone marrow combined. The enteric nervous system — the network of neurons lining the digestive tract — contains as many nerve cells as the spinal cord. Ninety-five percent of the body's serotonin is produced in the gut, not the brain. These findings reflect how central the gut is to human physiology — not just digestion, but immune function, nervous system activity and wider health.
The gut and brain are in continuous two-way communication, often referred to as the gut-brain axis. In human research, long-term disruption of the microbiome is being studied in relation to conditions including Alzheimer's disease, Parkinson's and depression. The evidence in humans is growing, and while causation is still being investigated, the direction of research has meaningfully broadened how many clinicians think about gut health.
Whether and to what extent the same principles apply in dogs remains an active area of veterinary research. The biology is not identical. But the structural similarities — a gut microbiome, an enteric nervous system, immune tissue closely associated with the gut lining — suggest the gut plays an important role in canine health too.
Reading Emeran Mayer's The Mind-Gut Connection helped me understand the depth of this relationship in a way that reshaped how I thought — not just about my own health, but about the animals in my care.
And then, inevitably, I looked at my dogs.
Then I looked at my dogs
At some point during 2024, having spent months applying this thinking to myself, I asked a simple question.
Why wasn't I doing this for them?
They're part of the family. Not metaphorically — genuinely part of daily life, part of the household, part of what makes home feel like home. And yet I was applying everything I'd learned about gut health and microbiome balance to myself, and giving no equivalent thought to them.
If I believed that supporting my own gut environment mattered for long-term health and resilience, it seemed inconsistent not to think the same way about the animals I live with and care about most.
So I started looking at what was available.
I wanted something science-led. Something that combined prebiotics, probiotics and postbiotics in a single daily formulation — reflecting growing interest in combination approaches within gut health research. Something developed with the same rigour I'd want applied to my own health.
I couldn't find it. So I spent 2025 making it.
What GutKind is — and what it isn't
GutKind is a prebiotic, probiotic and postbiotic supplement for dogs. It comes in two formats:
- Chews — designed to integrate easily into most kibble-fed dogs' routines
- Sprinkle — with a higher prebiotic content, designed for dogs fed fresh or raw diets
It is formulated to support normal gut function and help maintain a balanced digestive environment, as part of a healthy diet.
It is not a medicine. It is not intended to treat or prevent disease. It is not a substitute for veterinary diagnosis or care when something is wrong.
What it is, is the product I wished existed when I started asking these questions about my own dogs. Developed with attention to the evidence, formulated for daily use, and built around the principle that supporting the gut environment consistently over time may matter more than reacting only when problems arise.
Why this matters
I don't see gut health as a passing trend. I see it as an area where science is gradually refining our understanding of how interconnected the body's systems are. Digestion, immunity, mood and long-term resilience are not isolated silos. They influence one another, and the gut sits at the centre of many of those interactions.
In practice, most dogs I see in clinic don't need dramatic intervention. They need good nutrition, appropriate exercise, sensible preventative care — and sometimes thoughtful support during periods of change, such as dietary transitions, stress, ageing or recovery after medication.
Supporting the gut environment is not a guarantee of anything. But it is, in my view, a rational and evidence-informed part of a long-term approach to your dog's wellbeing.
That thinking is what led to the creation of GutKind.
What to do next
If you'd like to understand more about prebiotics, probiotics and postbiotics — and why combination approaches are gaining interest — you can read Part I and Part II of this guide.
If you're wondering whether gut support may be relevant for your own dog, you can complete our short GutKind Scorecard. It's designed to help you think through feeding patterns and digestive signs before deciding what to do next.
And as always, if your dog has persistent digestive issues, weight loss, blood in the stool or seems unwell, please consult your own veterinary surgeon.
This article is for educational purposes only and does not replace individual veterinary advice.
