Podcast Summary

Podcast: The Thyroid (and Hormone) Fixer Podcast
Episode 620: The ULTIMATE Gut Episode: Everything You Wanted to Learn About the Gut But Were Afraid to Ask
Date: April 10, 2026
Host: Dr. Amie Hornaman
Guest: Josh Deck, gut health and functional medicine expert

Episode Overview

In this expansive, fast-paced episode, Dr. Amie Hornaman is joined by gut health specialist Josh Deck for an in-depth Q&A covering “everything gut”—from leaky gut to probiotics, dietary strategies, acid reflux, parasite protocols, and connections between gut health, thyroid function, menopause, and mood. Drawing on questions from Dr. Amie’s active Facebook community, the discussion is approachable, science-informed, and loaded with practical takeaways for anyone frustrated by chronic gut, thyroid, or autoimmune complaints.

Main Discussion Points & Insights

Why Gut Health is Suddenly Trending

Josh credits increased research, especially the Human Microbiome Project (early 2000s), and a trickle-down effect (~17 years from discovery to mainstream) for the current interest.
Societal issues like rising rates of bowel diseases are making gut health more vital than ever; prevalence has risen from 1 in 6,700 (1950s) to 1 in 216 today, and is projected to hit 1 in 100 by 2045 ([08:20]).
Quote:
“It’s just a matter of discovery and people finally realizing this is something worth considering… It’s never been less important and I would argue today it’s even more important than ever... We are facing a battle against our guts like we’ve never seen in history.” — Josh Deck [09:58]

Gut Connections: Why “The Gut” Matters

Gut is central to multiple systems:
- Immune system (most immunity originates in the gut)
- Mood (90% of serotonin produced in gut)
- Thyroid conversion (T4 to T3 happens in the gut)
- Hormone metabolism (e.g., estrogen clearance via daily bowel movements) ([10:53])

Root Cause Philosophy: Too Much or Not Enough

Josh’s big-picture approach: “When we get sick, we have to look at two things: What do you have too much of or not enough of? That’s it.” — Josh Deck [11:30]
These apply to:
- Toxins (environmental, food, stress, etc.)
- Microbes (bacteria, viruses, fungi, parasites)
- Deficiencies (nutrients, sleep, sunlight, relationships)
It’s rarely only about genetics. Modern world exposures overwhelm systems ([11:48]).

Leaky Gut: Healing the Foundation

“How do you heal a leaky gut?”
- Identify and remove the root cause (overgrowths, toxins, chronic stress, mold, etc.).
- “It's like you’re trying to build a house while it’s on fire.”
- Plant-based medicinals (slippery elm, aloe, DGL, probiotics) help but are not enough if the core driver isn’t handled ([13:29]).
- Quote:
  "If you fix those [root causes], and just eat real food, your gut’s going to patch itself.” — Josh Deck [14:22]

Probiotics: Overhyped or Essential?

Josh describes the gut as a self-regulating ecosystem.
Probiotics aren’t panaceas. Short-term use can help, especially if you’re missing bacterial species (e.g., after antibiotics).
The number of bacteria in probiotics (even billions) is minuscule compared to the trillions in the gut.
Memorable analogy:
“It’s like adding a grain of sand on a beach... A million seconds is 11 days. A billion seconds is 31 years. A trillion seconds is 32,000 years.” — Josh Deck [18:18]
Fix your food and environment first; use probiotics therapeutically, not chronically ([17:27]).

Special Diets: Carnivore, Keto, and Fiber

Are Carnivore/Keto diets harmful for gut flora?
- Diets are tools; what’s therapeutic at one point may not be forever.
- Human microbiome is highly adaptable; people thrive on different seasonal/nutritional patterns.
- Case study: Going carnivore for 90 days increased some microbial diversity [20:24-23:55].
- Guiding principle: “Eat whole foods you tolerate that do not bother you. Try low histamine if in doubt.”
Personalization is Key:
- “There is no one-size-fits-all in health. As much as someone wants to sell you their protocol... we’re all so uniquely and biochemically different.” — Dr. Amie [23:55]

Acid Reflux and PPIs: What Most Get Wrong

Acid reflux usually comes from low, not high, stomach acid.
Proton pump inhibitors (PPIs) and antacids have long-term negative impacts (bone loss, nutrient deficiencies, increased risk for infections).
Instead: Reintroduce stomach acid slowly (using betaine HCl), nourish with zinc, and address stressors ([25:18]).
Hashimoto’s patients: Classic for low stomach acid due to general metabolic slow-down ([28:46]).

Vagus Nerve & Gut-Brain Axis

Gut and brain are in constant communication, mostly via the vagus nerve.
Vagal toning (humming, breathwork, cold exposure) can help regulate gut-brain dysregulation and motility ([32:10]).
Hypnotherapy may help for functional cases, but physical causes (like liver congestion or mitochondrial dysfunction) must be addressed for hyper-reactive patients.

Testing, Parasite Protocols & The Limits of Data

“If you have a pulse, you have a parasite.” However, not all parasites are pathological; some coexist, some are beneficial ([48:24]).
Parasite cleansing needs to be personalized and timed—doing it incorrectly can make patients worse.
Favorite gut test: Vibrant Wellness Gut Zoomer. Comprehensive but best used after foundational restoration, not as first step ([51:27]).
Microbiome and stool tests are helpful adjuncts, but clinical context and timing matter more.

Secretory IgA, Immunity & Autoimmunity

Secretory IgA is your gut’s “first-line” immune defense in mucosal surfaces ([56:08]).
High or low values are meaningful, but always require context (could indicate infection, chronic stress, immune burnout, etc.).
Patterns (elevated IgA, depleted beneficials, poor bile flow) often suggest deeper issues (e.g., mold exposure or autoimmune risk).

Fiber, Constipation, Menopause, and Hormone Health

Fiber is not always the answer—context and root cause matter much more.
People with inflamed, dysbiotic guts often worsen with added fiber.
“Fiber is not good for everyone always... You have to look at the ecosystem in which you’re putting that thing in.” — Josh Deck [60:29]
Both host and guest stress: Constipation in menopause is often about thyroid status/motility—not just fiber deficiency ([62:50]).

Most Memorable Quotes & Takeaways

Root Cause Model
“When we get sick, we have to look at two things: What do you have too much of or not enough of? That’s it.” — Josh Deck [11:30]
On Probiotics
“It’s like adding a grain of sand on a beach... Your couple of million here and there can be therapeutic, but it’s other factors—lifestyle and environments—that make the long-term sustainable changes.” — Josh Deck [19:44]
On Fiber
“If you’re highly inflamed, [fiber] is gas on the fire... Fiber is good for some guts, it’s not good for your gut right now.” — Josh Deck [61:14]
On Personalization
“There is no one-size-fits-all in health... We’re all so uniquely and biochemically different.” — Dr. Amie [23:55]
On Medical Dogma
“Salt and blood pressure has not been correlated; dropping your salt doesn’t do anything except deprive your body... Fix your liver, clean up your diet... It’s inflammation, not salt.” — Josh Deck [40:50]

Key Segments & Timestamps

[07:32] Guest Introduction: Josh Deck’s expertise
[08:20] Why gut health is finally mainstream
[09:58] Bowel disease epidemic statistics
[11:30] Root causes: “Too much or not enough” philosophy
[13:29] How to actually heal leaky gut
[15:16] Probiotics: what works, what doesn’t
[18:18] Microbe numbers explained
[20:24] Keto/carnivore diets and the gut microbiome
[25:18] Acid reflux, PPIs, why more acid is usually needed
[28:46] Hashimoto’s and gut function
[32:10] Vagus nerve, gut-brain axis, and hypnotherapy
[39:59] How to replace stomach acid and zinc’s role
[40:50] Salt, blood pressure, and the myth of sodium restriction
[45:02] GLP-1 drugs, motility, and gut risks
[48:24] Parasites, the realities and protocols
[51:27] Gut testing: when and how
[56:08] Secretory IgA and gut immunity
[60:29] Fiber, constipation, menopause & hormone health

Final Thoughts

Dr. Amie and Josh emphasize the complexity of gut health—there are no shortcuts or universal solutions. Start with root causes and context; favor whole, tolerated foods, and personalize everything (from probiotics to fiber to protocols). Be wary of one-size-fits-all advice, especially from trendy wellness or medical sources. The human body, and especially the gut, is resilient and adaptive—but it requires individualized, root-cause intervention.

For gut-specific help or to work with Josh Deck, visit gutsolution.ca.
To participate in future expert Q&As, join Dr. Amie’s Just Fix Your Thyroid Facebook group.

“The two reasons you get sick: You have too much of some things or not enough of other somethings.” — Josh Deck [63:34]

Podcast Summary

Episode Overview

Main Discussion Points & Insights

Why Gut Health is Suddenly Trending

Josh credits increased research, especially the Human Microbiome Project (early 2000s), and a trickle-down effect (~17 years from discovery to mainstream) for the current interest.
Societal issues like rising rates of bowel diseases are making gut health more vital than ever; prevalence has risen from 1 in 6,700 (1950s) to 1 in 216 today, and is projected to hit 1 in 100 by 2045 ([08:20]).
Quote:
“It’s just a matter of discovery and people finally realizing this is something worth considering… It’s never been less important and I would argue today it’s even more important than ever... We are facing a battle against our guts like we’ve never seen in history.” — Josh Deck [09:58]

Gut Connections: Why “The Gut” Matters

Gut is central to multiple systems:
- Immune system (most immunity originates in the gut)
- Mood (90% of serotonin produced in gut)
- Thyroid conversion (T4 to T3 happens in the gut)
- Hormone metabolism (e.g., estrogen clearance via daily bowel movements) ([10:53])

Root Cause Philosophy: Too Much or Not Enough

Josh’s big-picture approach: “When we get sick, we have to look at two things: What do you have too much of or not enough of? That’s it.” — Josh Deck [11:30]
These apply to:
- Toxins (environmental, food, stress, etc.)
- Microbes (bacteria, viruses, fungi, parasites)
- Deficiencies (nutrients, sleep, sunlight, relationships)
It’s rarely only about genetics. Modern world exposures overwhelm systems ([11:48]).

Leaky Gut: Healing the Foundation

“How do you heal a leaky gut?”
- Identify and remove the root cause (overgrowths, toxins, chronic stress, mold, etc.).
- “It's like you’re trying to build a house while it’s on fire.”
- Plant-based medicinals (slippery elm, aloe, DGL, probiotics) help but are not enough if the core driver isn’t handled ([13:29]).
- Quote:
  "If you fix those [root causes], and just eat real food, your gut’s going to patch itself.” — Josh Deck [14:22]

Probiotics: Overhyped or Essential?

Josh describes the gut as a self-regulating ecosystem.
Probiotics aren’t panaceas. Short-term use can help, especially if you’re missing bacterial species (e.g., after antibiotics).
The number of bacteria in probiotics (even billions) is minuscule compared to the trillions in the gut.
Memorable analogy:
“It’s like adding a grain of sand on a beach... A million seconds is 11 days. A billion seconds is 31 years. A trillion seconds is 32,000 years.” — Josh Deck [18:18]
Fix your food and environment first; use probiotics therapeutically, not chronically ([17:27]).

Special Diets: Carnivore, Keto, and Fiber

Are Carnivore/Keto diets harmful for gut flora?
- Diets are tools; what’s therapeutic at one point may not be forever.
- Human microbiome is highly adaptable; people thrive on different seasonal/nutritional patterns.
- Case study: Going carnivore for 90 days increased some microbial diversity [20:24-23:55].
- Guiding principle: “Eat whole foods you tolerate that do not bother you. Try low histamine if in doubt.”
Personalization is Key:
- “There is no one-size-fits-all in health. As much as someone wants to sell you their protocol... we’re all so uniquely and biochemically different.” — Dr. Amie [23:55]

Acid Reflux and PPIs: What Most Get Wrong

Acid reflux usually comes from low, not high, stomach acid.
Proton pump inhibitors (PPIs) and antacids have long-term negative impacts (bone loss, nutrient deficiencies, increased risk for infections).
Instead: Reintroduce stomach acid slowly (using betaine HCl), nourish with zinc, and address stressors ([25:18]).
Hashimoto’s patients: Classic for low stomach acid due to general metabolic slow-down ([28:46]).

Vagus Nerve & Gut-Brain Axis

Gut and brain are in constant communication, mostly via the vagus nerve.
Vagal toning (humming, breathwork, cold exposure) can help regulate gut-brain dysregulation and motility ([32:10]).
Hypnotherapy may help for functional cases, but physical causes (like liver congestion or mitochondrial dysfunction) must be addressed for hyper-reactive patients.

Testing, Parasite Protocols & The Limits of Data

“If you have a pulse, you have a parasite.” However, not all parasites are pathological; some coexist, some are beneficial ([48:24]).
Parasite cleansing needs to be personalized and timed—doing it incorrectly can make patients worse.
Favorite gut test: Vibrant Wellness Gut Zoomer. Comprehensive but best used after foundational restoration, not as first step ([51:27]).
Microbiome and stool tests are helpful adjuncts, but clinical context and timing matter more.

Secretory IgA, Immunity & Autoimmunity

Secretory IgA is your gut’s “first-line” immune defense in mucosal surfaces ([56:08]).
High or low values are meaningful, but always require context (could indicate infection, chronic stress, immune burnout, etc.).
Patterns (elevated IgA, depleted beneficials, poor bile flow) often suggest deeper issues (e.g., mold exposure or autoimmune risk).

Fiber, Constipation, Menopause, and Hormone Health

Fiber is not always the answer—context and root cause matter much more.
People with inflamed, dysbiotic guts often worsen with added fiber.
“Fiber is not good for everyone always... You have to look at the ecosystem in which you’re putting that thing in.” — Josh Deck [60:29]
Both host and guest stress: Constipation in menopause is often about thyroid status/motility—not just fiber deficiency ([62:50]).

Most Memorable Quotes & Takeaways

Root Cause Model
“When we get sick, we have to look at two things: What do you have too much of or not enough of? That’s it.” — Josh Deck [11:30]
On Probiotics
“It’s like adding a grain of sand on a beach... Your couple of million here and there can be therapeutic, but it’s other factors—lifestyle and environments—that make the long-term sustainable changes.” — Josh Deck [19:44]
On Fiber
“If you’re highly inflamed, [fiber] is gas on the fire... Fiber is good for some guts, it’s not good for your gut right now.” — Josh Deck [61:14]
On Personalization
“There is no one-size-fits-all in health... We’re all so uniquely and biochemically different.” — Dr. Amie [23:55]
On Medical Dogma
“Salt and blood pressure has not been correlated; dropping your salt doesn’t do anything except deprive your body... Fix your liver, clean up your diet... It’s inflammation, not salt.” — Josh Deck [40:50]

Key Segments & Timestamps

[07:32] Guest Introduction: Josh Deck’s expertise
[08:20] Why gut health is finally mainstream
[09:58] Bowel disease epidemic statistics
[11:30] Root causes: “Too much or not enough” philosophy
[13:29] How to actually heal leaky gut
[15:16] Probiotics: what works, what doesn’t
[18:18] Microbe numbers explained
[20:24] Keto/carnivore diets and the gut microbiome
[25:18] Acid reflux, PPIs, why more acid is usually needed
[28:46] Hashimoto’s and gut function
[32:10] Vagus nerve, gut-brain axis, and hypnotherapy
[39:59] How to replace stomach acid and zinc’s role
[40:50] Salt, blood pressure, and the myth of sodium restriction
[45:02] GLP-1 drugs, motility, and gut risks
[48:24] Parasites, the realities and protocols
[51:27] Gut testing: when and how
[56:08] Secretory IgA and gut immunity
[60:29] Fiber, constipation, menopause & hormone health

Final Thoughts

For gut-specific help or to work with Josh Deck, visit gutsolution.ca.
To participate in future expert Q&As, join Dr. Amie’s Just Fix Your Thyroid Facebook group.

“The two reasons you get sick: You have too much of some things or not enough of other somethings.” — Josh Deck [63:34]

wavePod

620. The ULTIMATE Gut Episode: Everything You Wanted to Learn About the Gut But Were Afraid to Ask

Summary

Podcast Summary

Episode Overview

Main Discussion Points & Insights

Why Gut Health is Suddenly Trending

Gut Connections: Why “The Gut” Matters

Root Cause Philosophy: Too Much or Not Enough

Leaky Gut: Healing the Foundation

Probiotics: Overhyped or Essential?

Special Diets: Carnivore, Keto, and Fiber

Acid Reflux and PPIs: What Most Get Wrong

Vagus Nerve & Gut-Brain Axis

Testing, Parasite Protocols & The Limits of Data

Secretory IgA, Immunity & Autoimmunity

Fiber, Constipation, Menopause, and Hormone Health

Most Memorable Quotes & Takeaways

Key Segments & Timestamps

Final Thoughts

Summary

Podcast Summary

Episode Overview

Main Discussion Points & Insights

Why Gut Health is Suddenly Trending

Gut Connections: Why “The Gut” Matters

Root Cause Philosophy: Too Much or Not Enough

Leaky Gut: Healing the Foundation

Probiotics: Overhyped or Essential?

Special Diets: Carnivore, Keto, and Fiber

Acid Reflux and PPIs: What Most Get Wrong

Vagus Nerve & Gut-Brain Axis

Testing, Parasite Protocols & The Limits of Data

Secretory IgA, Immunity & Autoimmunity

Fiber, Constipation, Menopause, and Hormone Health

Most Memorable Quotes & Takeaways

Key Segments & Timestamps

Final Thoughts