---
title: "Is Your Gut Health Affecting Your Thyroid"
entity: "blog"
canonical_url: "https://www.drvaleriegettings.com/blog/is-your-gut-affecting-your-thyroid"
markdown_url: "https://www.drvaleriegettings.com/llms/blog/is-your-gut-affecting-your-thyroid"
lastmod: "2025-09-15T01:03:00.000Z"
---

If you’ve been feeling sluggish, foggy, or exhausted, your gut could actually be playing a bigger role than you realize. Scientific research points to a fascinating connection: a percentage of thyroid hormone conversion happens in your gut. That means when your gut is inflamed or out of balance, your thyroid may struggle to keep up, leaving you with symptoms even when traditional labs look “normal.”

## The Gut-Thyroid Connection: What the Research Shows

Here’s what we know:

 • [Research shows](https://www.frontiersin.org/journals/endocrinology/articles/10.3389/fendo.2022.943408/full?utm_source=chatgpt.com) that a percentage of the conversion of inactive thyroid hormone T4 into active T3 happens in your gastrointestinal tract, thanks to gut microbes and an enzyme called intestinal sulfatase. This process is essential, because T3 is what powers your energy, metabolism, and mood, and is the active thyroid hormone.

 • When gut bacteria are out of balance , what is known as dysbiosis, or when inflammation is present, the efficient conversion that normally happens, drops off. So, even if your thyroid gland is healthy, you could feel hypothyroid-like symptoms due to poor T3 availability.
 
 • [The gut also supports your immune system](https://pmc.ncbi.nlm.nih.gov/articles/PMC7353203/) : it’s home to 70% of your body’s immune tissue (gut-associated lymphoid tissue, or GALT). Therefore, if your gut barrier is compromised, as in “leaky gut,” inflammation can occur and this can trigger or worsen autoimmune thyroid conditions like Hashimoto’s or Graves’ disease. Having this overactive immune response can also trigger allergy-type symptoms and histamine responses.

 • [Studies also show](https://www.endocrine.org/news-and-advocacy/news-room/endo-annual-meeting/endo-2025-press-releases/mathur-press-release?utm_source=chatgpt.com) people diagnosed with hypothyroidism are more likely to have small intestinal bacterial overgrowth (SIBO) —33% compared with 15% in those without thyroid issues. Having SIBO can further worsen gut inflammation and the way your body processes hormones, causing hormone disruption.

## Gut Inflammation Slows Your Thyroid—Here’s Why That Matters

When your gut is inflamed, here’s what happens:

  1.	You convert less T4 into T3 (active thyroid hormone) , which can leave you low on the hormone that powers your energy and metabolism, leading to fatigue, bloating, and weight gain.

  2.	Your immune system may go on high alert. Breached gut barriers often trigger immune reactions, since you have more proteins floating around from the gut into the rest of your system, which can lead to worsened autoimmune attacks on your thyroid.

  3.	You can experience thyroid symptoms even with normal labs like fatigue, weight gain, brain fog, cold sensitivity, especially if the gut is compromised in some way with SIBO or leaky gut.

Think of your gut as a partner with your thyroid that needs to also be looked at and treated. When your gut isn’t functioning optimally, your thyroid and thyroid hormones may be slower, even if your thyroid gland is structurally sound.

## What You Can Do From Scottsdale to Anywhere

If you’re in Scottsdale or beyond, these gentle, grounded steps can support your gut-thyroid axis:

1. Support beneficial gut bacteria

[Certain probiotic strains](https://pmc.ncbi.nlm.nih.gov/articles/PMC7353203/) such as Lactobacillus and Bifidobacterium are great probiotics for thyroid health, and have been shown to support gut balance. They may also aid thyroid hormone conversion since these bacterium are often low in hypothyroidism.

2. Nurture your gut lining

Focus on nutrient-dense, anti-inflammatory foods, consisting of whole produce, healthy fats, minimal sugar, and lean proteins. [The Mediterranean diet has been shown](https://pmc.ncbi.nlm.nih.gov/articles/PMC11172479/) to have positive influence on normalizing thyroid hormones, especially for those with subclinical hypothyroidism.

3. Work to restore gut balance

If you’re experiencing SIBO or dysbiosis, [addressing overgrowth and easing gut inflammation](https://www.endocrine.org/news-and-advocacy/news-room/endo-annual-meeting/endo-2025-press-releases/mathur-press-release?utm_source=chatgpt.com) is key, not just for digestion, but for thyroid health, too.

4. Heal the immune terrain

Supporting gut barrier integrity helps calm overactive immune responses and that can help to reduce autoimmune attacks on the thyroid.

5. Get personalized guidance

Each gut-thyroid story is very different, especially since everyone’s immune systems and gut integrity are vastly different. Working with a qualified practitioner, especially one experienced in gut-thyroid connections, can help you uncover the unique steps your body needs.

If you’re ready to get started and get some answers, especially if you’re looking for gut and thyroid support in Scottsdale, AZ, you can [grab your spot on an alignment call with me here](http://www.drvaleriegettings.com/apply) .

## Final Thoughts

When gut inflammation interferes with the conversion of T4 to T3, it can leave you low on the hormone that fuels your energy and vitality, even if your thyroid gland itself is functioning.

By nurturing your gut through balanced nutrition, calming inflammation, and supporting microbial balance, you’re creating balance with better gut and thyroid health. While you may be able to make some progress on your own, it's suggested to get the right testing and treatment from a healthcare provider that resonates with you.

## Frequently Asked Questions (FAQs)

Can gut inflammation really cause thyroid problems?

Yes. A portion of your inactive thyroid hormone (T4) is converted into active thyroid hormone (T3) in your gut, thanks to your gut microbes and enzymes like intestinal sulfatase. When your gut is inflamed, dysbiotic, or “leaky,” that conversion can slow down—leaving you with low T3, sluggish metabolism, and classic hypothyroid symptoms even if your thyroid gland itself looks “normal” on basic lab work.

Why do I still have hypothyroid symptoms if my labs are “normal”?

If your labs only look at TSH and maybe T4, they can miss what’s happening at the gut level and with T3 conversion. Gut issues like SIBO, leaky gut, or chronic inflammation can reduce how much T4 actually turns into T3, so you may still feel tired, foggy, bloated, or struggle with weight—even when your traditional thyroid labs come back in range.

What’s the connection between SIBO and hypothyroidism?

Research shows that people with hypothyroidism are more likely to have small intestinal bacterial overgrowth (SIBO) than those without thyroid issues. SIBO increases gut inflammation and disrupts how your body processes and activates thyroid hormones, which can worsen symptoms like bloating, constipation, and fatigue while also slowing your metabolism.

Can healing my gut help with Hashimoto’s or autoimmune thyroid issues?

Yes, supporting your gut is a great way to support an autoimmune thyroid condition like Hashimoto’s. About 70% of your immune system lives in your gut, so when the gut barrier is compromised (“leaky gut”), it can trigger or worsen autoimmune attacks on the thyroid by putting the immune system on high alert. Healing the gut lining, calming inflammation, and balancing the microbiome can help reduce immune overactivity and create thyroid function stability.

How can Dr. Gettings help with my gut–thyroid symptoms?

Working with naturopathic doctor who specializes in gut and thyroid health means you’re not just getting another generic protocol, you’re getting targeted testing and a personalized plan that looks at your microbiome, hormones, immune system, and gut barrier together. In my practice in Scottsdale, I help high-performing women with IBS, hypothyroidism, Hashimoto’s, and fatigue uncover root causes and follow a clear, step-by-step plan so they can get their energy, mental clarity, and confidence back.

About the Author

Dr. Valerie Gettings, NMD, PLLC

Naturopathic Medical Doctor | Gut & Thyroid Health

Dr. Valerie Gettings is a Scottsdale-based naturopathic doctor who helps high-performing women resolve gut and thyroid issues so they can feel clear, energized, and fully themselves again. Through her evidence-based Gettings Gut Health Method, she blends clinical expertise with individualized, root-cause medicine to restore energy, balance hormones, and support whole-body wellness, so her patients can live an adventure-filled life.

If you’re ready to finally get answers about your gut or thyroid symptoms, you can book an Alignment Call with Dr. Gettings [here](https://drvaleriegettings.com/apply) .