SIBO, or small intestinal bacterial overgrowth, may be an important and frequently overlooked piece of the chronic gut health puzzle. In this episode of Reverse Crohn’s and Colitis Naturally, Josh Dech explores how excessive microbial growth in the small intestine can contribute to bloating, abdominal pain, altered bowel movements, malabsorption, and intestinal dysfunction.

The discussion breaks down what makes the small intestine different from the colon and why an abnormal microbial population in this area can create problems through premature fermentation and the production of gases and other metabolic byproducts.

Josh also explores the potential root causes behind SIBO, including impaired stomach acid, bile flow, migrating motor complex dysfunction, ileocecal valve issues, reduced immune defenses, antibiotic exposure, parasites, mold exposure, chronic stress, certain medications, and other underlying conditions.

A particularly important part of the conversation is the relationship between food poisoning, post-infectious IBS, and gut motility. The episode examines the proposed role of CdtB and vinculin antibodies and molecular mimicry in damage to the migrating motor complex—one possible mechanism behind recurrent SIBO.

You’ll also learn about the major SIBO/intestinal methanogen overgrowth patterns: hydrogen, methane, hydrogen sulfide, and mixed presentations. The episode covers breath testing, antibody testing, and small-intestinal aspirate culture, as well as the different therapeutic strategies commonly discussed for each pattern.

Most importantly, this conversation looks beyond simply “killing the bacteria.” With SIBO frequently recurring, addressing motility and the underlying conditions that allowed the overgrowth to develop may be an essential part of a root-cause approach to gut health.

If you’re struggling with persistent digestive symptoms, inflammation, or unexplained changes in bowel function, this episode provides a framework for understanding how the microbiome, immune system, gut motility, and root causes can intersect.

TOPICS DISCUSSED:

• What SIBO Is And Why The Small Intestine Matters
• Root Causes And Mechanisms Behind SIBO
• The Four SIBO/IMO Patterns: Hydrogen, Methane, Hydrogen Sulfide And Mixed
• Food Poisoning, CdtB/Vinculin Antibodies And Migrating Motor Complex Dysfunction
• Natural And Pharmaceutical Approaches To Reducing Overgrowth
• SIBO Symptoms And Downstream Effects
• Biofilms And SIBO Recurrence
• Testing And Diagnostic Options

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Josh examines the scientific criteria used to define autoimmune diseases and explains why he believes Crohn's disease and ulcerative colitis are more accurately described as immune-mediated conditions rather than classic autoimmune diseases. He discusses antibodies commonly associated with IBD, the role of the immune system, and why identifying environmental triggers may be more important than simply suppressing inflammation.

The conversation also explores genetics, explaining why inherited susceptibility is only one piece of the puzzle. Josh reviews research involving identical twins, immigrant populations, and changing disease rates across industrialized nations to argue that environment, lifestyle, and the microbiome play a significant role in disease development.

You'll also learn about common risk factors—including antibiotics, smoking, ultra-processed foods, environmental toxins, mold exposure, and nutrient deficiencies—and how each may influence gut health, inflammation, immune system function, and the intestinal microbiome.

Finally, Josh introduces his root-cause framework for restoring health through identifying triggers, replenishing deficiencies, repairing the gut lining, rebuilding the microbiome, and supporting healthy immune regulation.

Whether you're living with Crohn's disease, ulcerative colitis, or simply interested in functional medicine and root-cause healing, this episode offers a thought-provoking perspective on gut health, chronic inflammation, the microbiome, and the future of IBD treatment.

TOPICS DISCUSSED:

• Autoimmune Theory And Why It's Challenged
• Root-Cause Model Of Crohn's And Colitis
• Genetics Versus Environmental Influences
• Environmental Toxins And Modern Lifestyle
• Gut Microbiome, Microbes, And Immune Responses
• Antibiotics, Smoking, Birth Control, And Other Risk Factors
• Leaky Gut And Immune Dysregulation
• The Five R Framework For Recovery

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In this episode, IBD specialist and functional medicine consultant Josh Dech breaks down the three most well-studied dietary approaches for inflammatory bowel disease (IBD): the Crohn's Disease Exclusion Diet (CDED), the Ulcerative Colitis Exclusion Diet (UCED), and the Specific Carbohydrate Diet (SCD). Josh explains the clinical evidence behind each approach, including research demonstrating steroid-free remission rates, improved mucosal healing, and strategies for supporting the gut microbiome while reducing inflammation.

You'll also learn when an elemental diet becomes necessary—an advanced nutritional intervention used when severe inflammation makes normal eating nearly impossible—and why cleaner elemental formulas may offer advantages over conventional hospital products.

Throughout the episode, Josh challenges conventional recommendations commonly given during IBD flares, discussing why many standard hospital diets focus only on reducing digestive workload while overlooking the role of processed foods, additives, sugars, and other factors that may influence gut health and the microbiome.

Most importantly, Josh explains why dietary therapy alone is rarely the complete answer. While therapeutic diets can help reduce inflammation and induce remission, long-term recovery requires identifying and addressing the underlying root causes driving chronic immune dysfunction.

If you're looking for evidence-based nutrition strategies, a deeper understanding of gut health, microbiome balance, inflammation, immune system function, and root-cause healing for Crohn's disease or ulcerative colitis, this episode provides a practical roadmap grounded in both clinical research and functional medicine principles.

TOPICS DISCUSSED:

• CDED (Crohn's Disease Exclusion Diet)
• UCED (Ulcerative Colitis Exclusion Diet)
• Hospital Diets and Criticism of Conventional Nutrition Advice
• Elemental Diets and Severe Flare Management
• Specific Carbohydrate Diet (SCD)
• Root-Cause Healing vs. Symptom Management
• Gut Microbiome, Dysbiosis, and Bacterial Mechanisms
• Foods to Include vs. Foods to Eliminate During Flares

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Josh challenges several conventional assumptions surrounding Crohn's disease and ulcerative colitis while presenting a root-cause approach focused on identifying the underlying drivers of chronic inflammation. He discusses how toxins, microbial imbalances, nutrient deficiencies, environmental exposures, stress, and immune system dysfunction can interact to influence gut health and recovery.

Listeners will learn why healing often occurs in layers, how biofilms can temporarily release toxins as they're disrupted, why the microbiome changes throughout recovery, and how immune system shifts may produce new symptoms even when overall health is improving. Josh also explains the roles of nutrient replenishment, nervous system regulation, detoxification pathways, hormone fluctuations, and individualized treatment protocols in creating the non-linear healing patterns many people experience.

Throughout the episode, he emphasizes the importance of distinguishing between expected healing responses and signs that a protocol may need to be adjusted. Rather than chasing symptom suppression alone, Josh encourages listeners to investigate the root cause of inflammation while using data, testing, clinical history, and individualized strategies to guide treatment decisions.

If you've ever wondered why your gut health seems to improve one week and worsen the next, this episode provides a framework for understanding the complexities of healing, the microbiome, inflammation, immune system function, and the root-cause approach to long-term digestive wellness.

TOPICS DISCUSSED:

• Why healing is not linear
• Root-cause model (toxins, microbes, deficiencies)
• Immune system shifts during healing
• Biofilms and toxin release
• Detox pathways and healing reactions
• Microbiome changes during recovery
• Nutrient depletion and replenishment
• Nervous system regulation and healing

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Antibiotics have transformed modern medicine and remain essential for treating serious bacterial infections—but are they being overused? In this episode, Josh explores the growing concern around unnecessary antibiotic use and what it means for your gut health, microbiome, immune system, and long-term recovery from chronic digestive conditions.

Drawing on CDC statistics, Josh explains why many antibiotic prescriptions may be avoidable and how repeated exposure can contribute to microbiome disruption, dysbiosis, inflammation, antibiotic-associated diarrhea, and increased susceptibility to opportunistic infections. He also explains the science behind how antibiotics work, including their effects on bacterial cell walls, protein synthesis, DNA replication, and metabolic pathways.

Josh emphasizes a root cause approach to gut health, encouraging listeners to become informed advocates for their own care by asking better questions before starting antibiotics while recognizing that life-threatening infections still require conventional medical treatment.

If you're looking to better understand the relationship between antibiotics, the microbiome, inflammation, immune function, and chronic digestive disease, this episode provides a practical framework for making more informed decisions about your health.

TOPICS DISCUSSED:

• Antibiotic overuse and CDC statistics
• How antibiotics affect the gut microbiome and immune system
• How antibiotics work biologically
• Natural antimicrobials and their mechanisms
• Oregano, garlic, berberine and other natural options
• Biofilms, quorum sensing and bacterial resistance
• When antibiotics are absolutely necessary

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Is taking probiotics really the best way to restore your gut microbiome—or could it actually be keeping you stuck?

Josh explains how the gut microbiome develops, why modern lifestyles contribute to chronic inflammation, immune dysfunction, and microbial imbalance, and how factors like ultra-processed foods, chronic stress, environmental toxins, poor sleep, mold exposure, and repeated antibiotic use influence long-term gut health.

He also discusses why many probiotics are transient rather than permanent colonizers, why aggressive "kill-the-bad-bacteria" protocols can sometimes worsen symptoms, and how drainage pathways, detoxification, nutrient status, and gut lining repair all influence whether beneficial bacteria can successfully thrive.

Whether you're living with Crohn's disease, ulcerative colitis, IBS, chronic digestive symptoms, or persistent inflammation, this episode offers a functional medicine perspective on why lasting healing requires more than simply adding another supplement. You'll learn why the order of healing matters and how creating the right internal environment may be the missing piece in rebuilding a resilient microbiome naturally.

TOPICS DISCUSSED:

• Root causes of gut dysbiosis and microbiome imbalance
• Why probiotics often fail to create lasting change
• The 5R gut healing framework
• Environmental factors affecting gut health (toxins, mold, processed food, stress)
• How the microbiome develops from infancy through adulthood
• Drainage pathways, detoxification, and congestion
• Why antimicrobial protocols can backfire

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Detox has become one of the most talked-about topics in natural health—but it's also one of the most misunderstood.

In this episode, Josh Dech explains why detox isn't simply about taking supplements, drinking detox teas, or spending hours in the sauna. Instead, successful detoxification depends on whether your body has the capacity to safely eliminate toxins after they're mobilized.

Whether you're dealing with Crohn's disease, ulcerative colitis, chronic inflammation, mold illness, or simply looking to improve your overall gut health, this episode provides a root-cause framework for supporting the body's natural detoxification systems safely and effectively.

TOPICS DISCUSSED:

• Drainage pathways and detox foundations
• Why detox can make people feel worse
• Environmental toxin exposure in modern life
• Cellular and mitochondrial health
• Immune system stabilization before detox
• Safe detox sequencing/framework

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In this episode, Josh Dech challenges some of the most widely accepted beliefs surrounding inflammatory bowel disease (IBD), arguing that chronic gut inflammation should be viewed through the lens of root-cause medicine rather than lifelong disease management.

Josh explores why he believes the autoimmune label does not fully explain Crohn's and colitis, discusses research involving immune-mediated responses, and examines evidence around antibodies, genetics, and environmental triggers. He explains why genetics may represent susceptibility rather than destiny and why factors such as toxins, antibiotics, processed foods, mold exposure, microbiome disruption, nutrient deficiencies, and lifestyle stressors deserve greater attention.

TOPICS DISCUSSED:

• Why Crohn's and Colitis Are Described as Non-Autoimmune
• Root Cause vs Symptom Suppression Philosophy
• Genetics vs Environmental Factors
• Immune-Mediated Responses and Antibody Discussion
• The Five R Healing Framework

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Biologics are not as reliable as your doctor makes them sound. In fact, 30% of patients who get one have no response, and 1 in 6 will have it fail within the first year. 

Worse than that, once you do get your biologics - it's almost guaranteed to fail at some point in the near future anyways. So why is this happening and what can you do to reduce the risk of your biologics from failing?

TOPICS DISCUSSED:

• How biologics work (Humira, Remicade, Stelara, Skyrizi, Entyvio, etc.)
• Important stats on biologics you need to know
• Why biologics fail
• Why some biologics work better than others
• How to get the most from you biologic drug(s) and how to reduce the risk of failure

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GI Maps are a great tool, but most people are using them wrong; which means you're not only looking for your root causes in the wrong place, but you're also wasting your money - to the tune of $400-$500 per test!

TOPICS DISCUSSED:

• Why GI maps are a waste of money
• Why they won't identify your root cause
• When a GI map is a good idea vs a bad idea (waste of money)
• When to get a GI map to get the most out of it
• How to identify root causes of your IBD

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