Beating Rosacea Naturally: Could Your Thyroid Be the Missing Link?

Beating rosacea can feel like a frustrating task, especially for those who have dealt with this chronic inflammatory skin condition for many years. You’re not alone! In recent years, research has shown more associations between rosacea and other chronic inflammatory conditions, including thyroid dysfunction and autoimmune conditions. Let’s explore this connection further to better understand the link between thyroid health and skin conditions like rosacea.

The Thyroid’s Role in Skin Health

Thyroid hormones, specifically Free T3, the active form of thyroid hormone, have a wide variety of responsibilities throughout the body. Most notably, active thyroid hormones help regulate metabolism and hormone signaling, but they also help support circulation and cell turnover. 

When thyroid hormones decrease and thyroid function slows down (aka hypothyroidism), all of these mechanisms are impaired. Poor circulation and cell turnover within the skin can lead to dry, rough, or flaky skin – common symptoms of hypothyroidism. This can drive other classic signs of hypothyroidism as well, including thinning hair, brittle nails, slow wound healing, and increased skin sensitivity or redness. 

Because thyroid hormones also directly affect immune regulation and collagen production, low levels of both T3 and T4 can create the perfect storm for inflammatory skin conditions like rosacea. 

What the Research Shows

Rosacea is an inflammatory skin condition characterized by redness, flushing, and sometimes acne-like bumps. While its exact cause isn’t fully understood, root drivers of the condition include immune system dysfunction, blood flow changes, and hormone imbalances. 

These factors are all implicated in and impacted by thyroid dysfunction as well. This is why thyroid conditions and skin conditions like rosacea often occur together, however, a direct correlation between the two has not yet been established. That being said, research has shown a significantly higher rate of hypothyroidism in those with rosacea compared to those who do not have rosacea. 

We know that an overactive immune system can damage the thyroid gland, leading to the development of thyroid autoimmunity (Hashimoto’s thyroiditis or Graves’ disease). It can also increase inflammation and worsen chronic inflammatory conditions such as rosacea. While research has shown rosacea to be directly associated with elevated C-Reactive Protein levels, a marker of whole-body inflammation, a direct correlation between rosacea and thyroid autoimmunity is less clear. 

Taking the research into account, rosacea could be an external clue into thyroid dysfunction, warranting a deeper look with a comprehensive assessment. Next let’s explore some direct ways that low thyroid hormone levels could lead to or worsen rosacea.

4 Ways Low Thyroid Hormones May Fuel Rosacea

#1. Shifts in Blood Flow and Circulation

Hypothyroidism slows metabolism and decreases body temperature, causing a shift in blood flow throughout the body. This is one reason many individuals with hypothyroidism experience cold hands and feet. The body may then compensate for this decreased circulation by dilating surface-level blood vessels, leading to flushing and redness that is characteristic of rosacea. 

#2. Altered Skin Barrier Function

Low thyroid hormones reduce both oil and sweat production, compromising the skin barrier. This leaves the skin vulnerable to dryness, irritation, and inflammation, all of which can worsen rosacea.

#3. Microbiome Imbalances

Research shows that thyroid dysfunction can shift the balance of the gut microbiome. Because rosacea is strongly tied to issues among the gut-skin axis, these microbiome changes may amplify systemic inflammation and fuel skin symptoms.

#4. Immune Dysregulation

Hypothyroidism, particularly when autoimmune in nature as in Hashimoto’s, can both create and be fueled by chronic, low-grade inflammation throughout the body. This heightened immune reactivity can make the skin more sensitive to triggers, increasing the frequency and severity of rosacea flares.

Beating Rosacea and Healing Your Skin from the Inside Out

If you struggle with rosacea alongside symptoms of hypothyroidism, such as fatigue, constipation, or hair loss, it’s worth taking a root-cause approach. Thyroid health and skin health are intimately connected, and rosacea could be pointing toward a deeper thyroid issue. 

The first step is comprehensive thyroid testing that goes beyond TSH (thyroid stimulating hormone) alone. Check out our Functional Thyroid Testing Cheat Sheet for a deep dive into the best labs to properly assess your thyroid function. 

Equally important is addressing nutrient gaps, since vitamins and minerals like selenium, zinc, vitamin D, and iodine, are essential for both thyroid hormone balance and resilient skin. Additionally, we can utilize nutrition strategies to support gut health and reduce inflammation to help beat rosacea and optimize thyroid function.

Join us in our Functional Thyroid Foundations group program (formerly Inflammation Hormony) to address all of these areas, decreasing inflammation and supporting thyroid health through functional nutrition strategies. Join the waitlist today as we countdown our next live program beginning in October! We can’t wait to see you there!

Written by Romana Brennan, MS, RDN