Why did every SIBO treatment stop working?

Most SIBO treatments stop working when they lower the bacteria for a while, but never change the terrain that allowed the overgrowth in the first place. In the script, Dr. Kenny explains that the biggest missing layer is often chronic nervous system stress, which can weaken digestion, immune resilience, and the gut barrier all at once

Why is Hashimoto’s more than a thyroid problem?

Hashimoto’s is more than a thyroid problem because the thyroid is often the messenger, not the main source of the trouble. In many cases, deeper issues in stress chemistry, gut-immune balance, and environmental or nutrient factors are helping drive the autoimmune attack, which is why thyroid medication alone may not fully solve the problem.

Your thyroid may be taking the blame

Hashimoto’s is an autoimmune condition, which means the immune system is mistakenly tagging thyroid tissue as a threat. That matters because it shifts the question from “What is wrong with my thyroid?” to “Why is my immune system reacting this way in the first place?”

In the video, Dr. Kenny puts it simply, your thyroid is not the villain, it’s the victim. It often gets the name and the blame because it is the easiest thing to measure on standard lab work. But many people still feel exhausted, foggy, or stuck with weight changes even after their TSH looks better. That is usually the clue that the bigger story has not been fully explored.

Stress can change thyroid output

One of the biggest hidden drivers in the script is stress chemistry. Not just emotional stress, but the body’s full stress response. When cortisol stays elevated for long enough, the body may downshift active thyroid hormone production as a protective, energy-saving response. Dr. Kenny describes this as survival mode. Your body is not failing, it is adapting.

This is why things like poor sleep, skipped meals, overtraining, or constant uncertainty can matter more than people realize. As a functional medicine practitioner, I look at these patterns because the thyroid listens to stress signals every day. If the body thinks danger is ongoing, it may choose conservation over performance.

Your gut and immune system are part of the story

The script also highlights the gut-immune connection. A large share of the immune system lives in the gut, so when the gut lining is irritated or the microbiome is off balance, the immune system can become more reactive. In some people, that may add fuel to the autoimmune fire.

Dr. Kenny also explains that certain microbes or food proteins can resemble thyroid tissue closely enough to confuse the immune system. That does not mean every person with Hashimoto’s needs the exact same food plan. It means we need to test, not guess. At Dr. Kenny’s clinic, we look for patterns and context instead of handing out one-size-fits-all rules.

Nutrients and exposures can nudge the system

The third piece is the environment around the thyroid. The video points to heavy metals, halogens, and nutrient deficiencies as possible contributors. Nutrients like selenium, zinc, iron, and vitamin D help support both thyroid hormone function and immune balance. Even iodine needs context, because too little can be a problem, but too much may also stir things up.

That is why Hashimoto’s often responds best when we stop treating the thyroid like an isolated part and start treating it like part of a bigger conversation. The goal is not just to calm the messenger. It is to understand why the message is being sent at all.

Additional Resources:

If stress has been quietly reshaping your energy, hormones, or thyroid patterns, Can stress really mess up my hormones or thyroid? connects those dots in a simple, patient-friendly way.
If you have been told your labs look fine but you still do not feel like yourself, Why do I feel bad even though my doctor says my labs are “normal”? helps explain why the bigger story can get missed.
In Hashimoto’s Isn’t Just a Thyroid Problem: It’s a Whole System Breakdown, Dr. Kenny explains why stress chemistry, gut-immune shifts, and environmental burden can all help drive Hashimoto’s beyond the thyroid itself.
A 2025 study found that higher cortisol levels tracked with lower active thyroid hormone, which helps explain why long-term stress can make thyroid symptoms feel worse

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Answered by Dr. Kenny Mittelstadt, DACM, DC, IFMCP
Certified functional medicine practitioner specializing in advanced lab testing and personalized healing protocols to uncover root causes of health roadblocks.