The Hidden Link Between Gut Inflammation and Thyroid Issues (And How We Reverse It)

Dr. Matthew Lewis

Mar 29, 2026

Thyroid, Hashimotos, Autoimmune Condition

A Simple but Powerful Combination of Holistic and Integrative Medicine

What Causes Inflammation in the Gut and Thyroid?

Gut inflammation and thyroid dysfunction are often connected through immune responses, food sensitivities (like gluten), and autoimmune triggers such as Hashimoto’s thyroiditis. When inflammation in the gut is left untreated, it can contribute to hormone imbalances, fatigue, bloating, and long-term health issues.

Key Takeaways From This Case Study

  • Gut inflammation can exist even with moderate symptoms

  • Elevated Calprotectin is a strong marker of gut inflammation

  • Gluten sensitivity can trigger autoimmune thyroid conditions

  • Treating the gut can reduce thyroid antibodies

  • A combination of holistic and conventional care produces the best outcomes

Why Patients Really Care About Inflammation

Everyone talks about weight loss and improving cholesterol, but let’s be honest, most people just want to look and feel better! What I love more than anything in practice is seeing a patient who’s losing inflammation.

When a patient loses inflammation, you can see it as soon as they walk into the office or get on a virtual call. It’s in their face! You see the difference: improved colors, more energy, and less puffy. Even better is when you check the labs and you see the markers improving, now you know it’s happening for real!

Case Study: Maddie’s Symptoms and Initial Concerns

Here’s a case study of a recent patient who came in complaining of bloating, heavy feeling in the abdomen, heart palpitations, and general fatigue. Maddie is 38 years old and has two children. She thought it was just a mom problem! It was not. What she had was inflammation in her gut.

How We Identified Gut Inflammation

We found this by running a test called Calprotectin. If the Calprotectin is elevated over 50, it’s a sign of inflammation in the gut. Her initial level was over 300, considered severe inflammation. Interesting, because while her levels were so severely elevated, symptoms were moderate in comparison to someone with Crohn’s or Colitis.

Question: What happens if this level stays elevated for months to years? Will she develop a more serious condition?

It’s possible, if she has the genetics for Crohn’s, Irritable Bowel Disease, or Celiac’s, that she may go on to trigger a more serious gastrointestinal concern.

The Deeper Concern: Symptoms That Impact Daily Life

Enough about that, because she cares about the bloating, which looks bad. She cares about the fatigue that is impacting her ability to be present with her children. Maddie cares about the fact that her face feels puffy all the time.

Discovering the Thyroid Connection

She wonders if she has a thyroid problem. Her conventional doctor checks and no thyroid problem. On her next visit to her family doctor, she requests that they “check again”; she is sure there is a problem with her thyroid, and she’s gaining weight. She asks for them to check her thyroid antibodies. Maddie searched Chat GPT, and that’s what it came up with.

Chat was correct, she had Hashimoto’s thyroiditis. That’s how we met. Maddie was looking for a more “holistic approach,” and now that she had a diagnosis of a thyroid problem, she wanted to make sure she was getting all the information she needed to help herself.

This is a common theme in my holistic practice of over twenty-five years. It’s not uncommon to uncover a hidden thyroid issue by simply taking the next step and ordering a thyroid antibody test when nobody else has. Just as important is how you go about treating it.

Root Cause Analysis: Gut and Thyroid Connection

For Maddie, since her Calprotectin was high, we dug deeper to understand what was causing this and how it could be impacting her thyroid.

We were able to see that she also had gliadin antibody elevations, which meant that she is either sensitive to gluten or has celiac disease. Research is clear that either way, the thyroid tissue can be attacked through a mechanism called molecular mimicry.

This is where the body sees gluten protein as similar to thyroid tissue. Since it’s attacking the gluten protein with antibodies (that’s the gluten sensitivity or celiac disease), those same antibodies that started out attacking the gluten begin to attack the thyroid. This creates an autoimmune reaction in the thyroid, or thyroiditis.

By fixing the gut, you can reduce or put the thyroid attack into remission.

Key Lab Findings

Let’s review some of the facts of this case:

  • Elevated Calprotectin - over 300 - normal is less than 50

  • Elevated Thyroid Antibodies over 800 - normal is less than 40

These are the two main lab findings.

Treatment Plan: Holistic + Targeted Approach

After some counseling, we agreed that Maddie needed to avoid gluten 100% of the time, treat it like celiac disease, because with 80% gluten reduction, she was not doing well.

I provided her with some supplements to heal a leaky gut and reduce inflammation. She also started on BPC 157 peptide, which is anti-inflammatory to the gut.

Results After 3 Months

After three months on this protocol, her numbers were as follows

  • Calprotectin 60 - almost in the normal range, now on the low side of inflammation

  • Thyroid Antibodies - 200 - 400X less, still showing elevation in the mild range

Symptom Improvements Maddie Experienced

Here is what Maddie noticed. She is no longer bloated all the time. Her face is not puffy, and she was able to lose ten lbs.

I know a lot of patients who don’t want to take thyroid hormone because of what they read on Chat GPT, which I have to admit is sometimes correct. However, each person needs to be viewed with a trained eye. And as impressive as AI is, it’s not as good as a provider with real-life experience and some credentials :) I think most agree here.

Final Step: Integrating Conventional Treatment

Our final step with Maddie, once the inflammation was down and the antibodies to thyroid were improved, was to start on thyroid medication.

At Provoke, we take a holistic approach and then integrate with conventional approaches to provide comprehensive care. Imagine if your thyroid is being attacked, you calm the attack, but there is damage, and for many to feel their best, a thyroid medication, be it natural or synthetic, depending on the person, will be necessary.

Outcome: Restored Energy and Health

In this case, that was truly the icing on the cake, and Maddie is now feeling energetic and back to her old self. She needs to avoid gluten, or she will flare up.

I love it when patients lose inflammation! It’s turning life back on!

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Providing Functional Medicine Care to the Greater Tampa Bay Area

Wesley Chapel
Odessa
Keystone
Temple Terrace
Land O' Lakes

South Tampa
Downtown Tampa
Bayshore
Lutz
Carrollwood

Land O' Lakes
Westchase