Episode 119: How Gut Health Affects Your Immune System + 5 Myths Debunked with Eli Brecher
Struggling with fatigue, brain fog, bloating, or recurring health issues even when your tests come back normal? Your gut health could be the missing piece.
In this episode of The Goode Health Podcast, Nicole Goode is joined by registered nutritionist Eli Brecher to break down how gut health directly impacts your immune system, inflammation, and overall wellbeing. You’ll learn why you don’t need obvious digestive symptoms for your gut to be affecting your health, and how hidden imbalances in the microbiome can show up as fatigue, hormone issues, skin flare-ups, and more.
Together, they debunk 5 of the most common gut health myths, from probiotics and bloating to IBS diagnoses and “normal” test results, while giving you practical, science-backed steps you can start using right away to restore your gut-immune balance and boost your overall health.
This episode answers questions like:
“Can gut health affect the immune system?”
“What are signs of poor gut health without digestive symptoms?”
“How does stress affect gut health?”
“What is leaky gut and is it real?”
“What causes IBS really?”
“Do probiotics actually work?”
“What’s the difference between probiotics and prebiotics?”
“How to improve gut health naturally”
If you want to understand the gut–immune connection, reduce symptoms, and finally feel like you’re getting to the root cause of your health issues, this episode will equip you with the knowledge to support your immune system and feel your best.
DISCLAIMER: The content in this podcast and related website is not intended to be a substitute for medical advice. It is not intended to be used to diagnose or treat, instead it is designed to help educate and inspire. Always seek the advice of a professional medical practitioner or qualified health practitioner. Never ignore or disregard advice given to you based on information in this podcast or related website and do not delay in seeking medical advice.
Timestamps:
[02:30] - Can You Have Gut Health Issues Without Digestive Symptoms?
Why fatigue, brain fog, and hormone imbalances can still point to a gut imbalance.
[05:33] - Signs of a Disrupted Gut–Immune Connection
How gut dysfunction can show up as inflammation, low immunity, and chronic symptoms.
[08:34] - Chronic Stress and the Gut–Immune Axis
How stress impacts digestion, microbiome balance, and intestinal permeability (“leaky gut”).
[11:00] - Myth #1: “Bloating Is Normal”
Why daily bloating is a sign of poor gut health, not something to ignore.
[12:20] - Myth #2: IBS Is a Complete Diagnosis
Why IBS is often a label, not a root cause, and what might be getting missed.
[15:00] - Myth #3: Probiotics Fix Everything
When probiotics actually help (and when they don’t for gut health and immunity).
[19:00] - Myth #4: Understanding Prebiotics vs Probiotics
How fibre, prebiotics, and diet shape your gut microbiome long-term.
[20:44] - Myth #5: “Normal” Tests But Ongoing Symptoms
Why standard testing can miss gut imbalances, microbiome issues, and functional problems.
[22:20] - Food-First Approach to Improving Gut Health
Simple, sustainable strategies to support your microbiome and immune system daily.
[26:30] - What Real Gut Health Improvements Feel Like
Key signs your gut is healing: energy, digestion, sleep, and reduced inflammation.
“You don’t need to feel bloated or have digestive issues for your gut to be affecting your health. That’s one of the biggest misconceptions. People come in saying, ‘my gut is fine,’ but they’re exhausted, wired at night, struggling with their mood, or constantly getting sick. And when you look deeper, the gut is sitting right underneath all of it, impacting blood sugar balance, stress response, inflammation, and even how well they absorb nutrients. The absence of gut symptoms doesn’t mean the absence of a gut problem”
Essential learnings from this episode…
You don’t need digestive symptoms to have poor gut health. Gut imbalances often show up as fatigue, brain fog, hormone issues, and skin flare-ups, not just bloating or IBS. This is why many people miss the gut as a root cause.
The gut-immune connection is central to chronic illness. Around 70% of your immune system lives in your gut, meaning microbiome health directly impacts inflammation, immunity, and autoimmune symptoms.
Chronic stress disrupts gut function at every level. Stress reduces digestion, alters the microbiome, and increases intestinal permeability (“leaky gut”), making it a major driver of gut and immune dysfunction.
IBS is often a label, not the root cause. A diagnosis like IBS doesn’t explain why symptoms are happening. Identifying triggers like stress, microbiome imbalance, or food sensitivities is key to real healing.
Probiotics aren’t a one-size-fits-all solution. While helpful in some cases, probiotics depend on the right strains and context. Diet, prebiotics, and lifestyle play a bigger role in long-term gut health.
Consistency and lifestyle matter more than quick fixes. Improving gut health isn’t about perfection, it’s about consistent nutrition, stress regulation, sleep, and supporting your nervous system over time.
EPISODE 119
Important links & mentions from this episode
Connect with Eli Brecher
Instagram: @elibrechernutrition
Website: Eli Brecher
Podcast: The Gut 360 Podcast with Eli Brecher (Apple, Spotify, YouTube)
Episode 115: Why Your Gut Is Running Your Immune System (And What to Do When It’s Not Working)
Episode 116: The Adrenal-Gut-Immune Triangle: Why Your Gut Protocol Isn’t Working
Episode 117: How Chronic Stress Drives Autoimmune Disease (The Science Most Doctors Miss)
Episode 118: Blood Tests Are “Normal” But You Feel Awful: 5 Markers Your Doctor May Miss
Goode Health Clinic Functional Medicine Packages
Take the FREE MitoImmune Health Assessment
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