EditorialGutPetsNutrition

What You Need to Know About Your Pet’s Gastrointestinal Issues: Expert Insights From a Vet

By Dr. Marlene Siegel DVM JUNE · 25 June 2026 · 7 min read

Gastrointestinal (GI) issues are one of the top reasons for veterinary visits. Symptoms can range from anorexia (refusing to eat), vomiting, diarrhea, constipation, to a rumbly tummy.

Understanding the underlying root cause of these issues can help create more effective, long-term solutions.

In Cats: Chronic GI Symptoms: A study analyzing over a million adult cats visiting Banfield Pet Hospital found that approximately 2% exhibited chronic vomiting and/or diarrhea. Specifically, 1.4% experienced chronic vomiting, 0.4% had chronic diarrhea, and 0.2% presented with both symptoms at different times.

Parasitic Infections: Research indicates a higher prevalence of gastrointestinal parasites in stray cats (71%) compared to household cats (40%). Common parasites identified include Toxocara cati, Ancylostoma species, and Isospora species.

In Dogs: Overall GI Disorders: Data from the Dog Aging Project, encompassing over 43,000 dogs, revealed that 30% had a history of at least one gastrointestinal disorder. The most frequently reported conditions were infectious diseases (17%), chronic diarrhea (3%), ingestion of foreign bodies (2%), anal sac impactions (2%), and pancreatitis (2%).

Seasonal Gastroenteritis: A study focusing on gastroenteritis in dogs reported a higher occurrence during the winter months (December to February), accounting for 30.19% of cases.

When GI Issues Become Chronic: Leaky Gut as the Root Cause Leading to Inflammation

The root cause of many chronic GI issues, including irritable bowel syndrome (IBS) and inflammatory bowel disease (IBD), is often linked to leaky gut syndrome.

What is Leaky Gut?

Leaky gut occurs when the intestinal lining becomes abnormally permeable, allowing toxins, pathogens, and undigested food particles to enter the bloodstream. This triggers an immune response, leading to chronic inflammation.

There are several key contributors to leaky gut syndrome in pets, many of which are linked to modern lifestyles and feeding habits:

Because inflammation will go to the weakest link in the body, it can show up as:

Addressing the early signs of leaky gut can prevent the progression to more severe GI diseases like IBS and IBD.

Gastrointestinal issues in pets can stem from many factors, with leaky gut syndrome at the root. When these problems are left untreated/unresolved, they may evolve into more chronic conditions like Irritable Bowel Syndrome (IBS) and Inflammatory Bowel Disease (IBD). While these two disorders share overlapping symptoms, they are distinct in their causes and effects.

Understanding IBS:

Understanding IBD:

IBD causes chronic inflammation and structural changes in the GI tract, often leading to more severe symptoms and long-term health problems.

Diagnosing IBS and IBD:

Because the symptoms of IBS and IBD mimic hundreds of other diseases, it is critically important to rule out other potential causes. The allopathic diagnostic workup typically includes:

An integrative diagnostic workup includes all of the above plus:

Western Medicine: Symptom Management vs. Root Cause

Traditional veterinary treatments, such as antibiotics, steroids, and prescription diets, tend to manage symptoms but don’t address the underlying gut imbalances that cause issues like IBS and IBD. This often leads to relapses, requiring ongoing treatments that only provide temporary relief.

Traditional Allopathic Treatments For IBS And IBD In Pets And Their Side Effects:

  1. Converting the pet to a highly processed prescription diet: Though they may offer some temporary relief, they are enzymatically dead, contain hormones, chemicals, and genetically modified ingredients. They don’t restore balance to the gut microbiome or address the root causes of the dis-ease.
  2. Deworming: Often done empirically, without knowing if the product is needed or effective against suspected pathogens.
  3. Antibiotics: Kill beneficial bacteria, leading to gut imbalances and worsening leaky gut. 
  4. Immunosuppressants and Corticosteroids: Can result in immune suppression, weight gain, and further damage to the tight junctions in the gut lining.

While traditional treatments may provide short-term relief for gastrointestinal disorders like IBS and IBD, they often fail to address the underlying causes. A holistic approach focuses on identifying and treating the root causes of these conditions by identifying deficiencies/toxicities, eliminating the causative lifestyle factors, healing the gut and microbiome, and strengthening the immune system through natural therapies.

Comprehensive Diagnostic Approach

To effectively heal the gut, we must first identify underlying deficiencies, toxicities, and microbiome imbalances. In addition to standard tests (CBC, blood chemistries, thyroid, abdominal x-rays, abdominal ultrasound, and intestinal biopsy), the integrative approach also includes:

Holistic Solutions for GI Health

By focusing on gut health, reducing inflammation, and restoring balance in the body, we can address the root causes of GI issues and promote healing.

Case Study: Transforming Pet Health with Holistic Approaches

Cookie’s Journey: Cookie, a dachshund, struggled with chronic IBD and endured recurring digestive issues 2-3 times a week for 4 years. Despite following a conventional treatment plan. The traditional approach failed to provide lasting relief, and he continued to suffer from frequent flare-ups and discomfort. However, after switching to a raw diet, incorporating digestive enzymes, and undergoing fecal matter transplantation, Cookie’s bowel movements normalized within days, and his quality of life dramatically improved.

Conclusion: Empowering Pet Parents For Better Health

Epigenetics (lifestyle) accounts for 95% of why pets get debilitating GI dis-ease. Genetics (having bad genes) accounts for 5% of cases. By adopting a holistic approach to pet health, pet parents can help their furry companions overcome chronic gastrointestinal issues and, better yet, prevent health challenges!

Become an empowered pet parent today by taking The Empowered Pet Parent Course! Module One Is Free: Go to www.transformingvetmedicine.com

Disclaimer:

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