Thyroid Health FAQs

Thyroid-Focused Naturopathic Support for Hashimoto’s & Hypothyroidism

For over 33 years, I have worked with people who still don’t feel well — even when they’ve been told their thyroid tests are “normal”.

Across more than 25,000 client consultations, one pattern has become very clear:

When the thyroid is struggling, it is rarely just about the thyroid.

Today, a significant part of my clinic focus is supporting people with thyroid concerns — particularly Hashimoto’s, hypothyroidism and persistent fatigue — especially when symptoms continue despite treatment.

Why People Seek Thyroid Support

You may resonate with this work if:

You have been diagnosed with Hashimoto’s or hypothyroidism
You still experience fatigue despite treatment
You have been told your results are “normal” but do not feel normal
You are looking for deeper investigation
You value clarity over quick fixes

Clients travel from across the Sunshine Coast and connect online from beyond the region, seeking a practitioner who takes the time to investigate thoroughly and explain clearly.

Below are some of the most common questions I am asked.

1. What causes thyroid problems?

Thyroid dysfunction rarely happens in isolation.

In autoimmune thyroiditis such as Hashimoto’s, the immune system gradually attacks thyroid tissue. But the deeper question is always: What triggered the immune system in the first place?

Contributing factors may include:

Gut dysfunction and increased intestinal permeability
Chronic stress patterns
Nutrient depletion
Environmental exposures
Genetic susceptibility

As Dr Datis Kharrazian states: “Autoimmune disease is not a thyroid problem — it is an immune system problem.”

The thyroid is often the visible expression of something deeper. My work is about identifying what that “something deeper” may be for you.

2. Why do I still feel unwell if my thyroid tests are “normal”?

This is one of the most common frustrations I see in clinic.

Standard panels often measure TSH and sometimes Free T4. However, symptoms can persist due to:

Thyroid antibodies
Impaired T4 to T3 conversion
Elevated reverse T3
Iron or selenium deficiency
Ongoing inflammation

Research published in the Journal of Clinical Endocrinology & Metabolism has shown that some patients experience persistent symptoms despite TSH levels within reference range.

After three decades in practice, I have learned to look beyond a single number. Your symptoms matter. Your lived experience matters.

3. Does diet really affect Hashimoto’s?

Yes — profoundly.

Diet is one of the most powerful modifiable factors in autoimmune thyroiditis.

A gluten-free diet has been shown in clinical studies to reduce thyroid antibody levels in women with Hashimoto’s. In a 2019 study, participants following a gluten-free diet experienced significant reductions in anti-TPO and anti-Tg antibodies.

Given the well-established link between coeliac disease and autoimmune thyroiditis, removing gluten is often a foundational starting point in thyroid-focused care.

In clinical practice, many people report:

Improved energy
Reduced brain fog
Better digestion
Reduced inflammatory symptoms

Food is information for the immune system. In autoimmune thyroid conditions, that information matters.

4. Should everyone with Hashimoto’s go gluten-free?

While care is always individualised, research increasingly supports gluten elimination in autoimmune thyroiditis — particularly where immune activation is present.

Gluten can increase intestinal permeability in susceptible individuals, which may perpetuate autoimmune activity.

For this reason, many thyroid-focused naturopaths recommend a structured gluten-free trial as part of comprehensive care.

Over the years, I have seen gluten removal become a turning point for many clients — not because it is trendy, but because it reduces immune load.

5. Which nutrients are essential for thyroid health?

The thyroid depends on specific nutrients for hormone production and immune regulation, including iodine, selenium, zinc, iron, vitamin D and magnesium.

Selenium has particularly strong evidence in reducing thyroid antibodies in Hashimoto’s.

[IMAGE: Key Thyroid Nutrients infographic]

Why testing matters more than guessing

Each of these nutrients plays a distinct role in thyroid physiology. Deficiency in even one can impair how well the thyroid — and the immune system — functions. But levels vary significantly from person to person, and symptoms of nutrient deficiency often overlap with thyroid symptoms themselves, making it difficult to know what is driving what without objective testing.

Targeted nutrient testing removes the guesswork. Rather than broadly supplementing and hoping for improvement, testing allows for a far more precise and effective approach — something I assess routinely in clinic so that any nutritional support is based on what your body actually needs.

After 33 years of clinical practice, one thing remains consistent: guessing rarely works. Testing provides clarity.

6. Can stress really affect my thyroid?

Yes.

Chronic stress influences immune regulation and thyroid hormone conversion.

Elevated cortisol can impair the conversion of T4 into active T3, contributing to fatigue and metabolic sluggishness.

I often explain to clients: When the nervous system feels unsafe, the body conserves energy.

Supporting the nervous system is often just as important as supporting the thyroid itself.

7. How are gut health and thyroid connected?

The gut and thyroid are closely linked.

Increased intestinal permeability has been associated with autoimmune activation, including Hashimoto’s thyroiditis.

When gut integrity improves, immune balance often improves alongside it.

This is why thyroid care frequently includes:

Gluten elimination
Anti-inflammatory dietary strategies
Microbiome support
Digestive restoration

The thyroid reflects the health of the terrain it lives in.

8. Is natural thyroid support safe alongside medication?

Yes — when guided appropriately.

Nutritional and lifestyle strategies can complement conventional treatment. Monitoring is essential when making changes that may influence thyroid hormone levels.

My approach is always measured, collaborative and thoughtful.

9. What does a root-cause approach to thyroid support mean?

It means we do not stop at “your thyroid is low.”

We ask:

Why is the immune system activated?
Why is conversion impaired?
Why are symptoms persisting?
What underlying stressors are contributing?

Root-cause thyroid care may explore:

Immune patterns
Gut function
Nutrient status
Environmental exposures (including mould)
Stress physiology
Hormonal interplay

After more than 25,000 consultations, I have learned that when we connect the dots properly, what feels complex often becomes clearer.

10. How long does it take to see improvement in thyroid health?

This is a very common and very reasonable question.

Thyroid health rarely shifts overnight — especially in autoimmune conditions such as Hashimoto’s, where the immune system has often been active for years before diagnosis.

In my experience, many clients begin to notice improvements in energy, clarity and overall wellbeing within 6–12 weeks once the right foundations are in place. However, deeper immune regulation and metabolic stability may take several months.

What factors influence progress?

Individual responses vary considerably. The factors that most commonly shape how quickly someone responds include:

Duration of thyroid dysfunction
Level of immune activation
Nutrient status
Stress load
Gut integrity
Consistency with dietary and lifestyle changes

Understanding where you sit across these factors is a key part of setting realistic expectations and building a plan tailored to your specific situation — not a generic timeline.

After 33+ years in practice, one thing remains true: sustainable change is rarely rushed.

Thyroid care is not about forcing the body — it is about reducing immune load, restoring balance, and supporting physiology step by step. When the underlying drivers are addressed methodically, improvement becomes far more predictable.

11. What causes thyroid nodules?

A thyroid nodule is a small lump or growth within the thyroid gland, which sits at the base of the neck just below the larynx (voice box). These nodules may be solid, fluid-filled (cystic), or a mixture of both.

Although finding a lump can sound alarming, the vast majority of thyroid nodules are benign (non-cancerous) and many never cause symptoms or require treatment.

[IMAGE: Thyroid gland anatomy diagram]

How common are thyroid nodules?

Thyroid nodules are far more common than most people realise. According to the American Thyroid Association, up to 50–60% of adults may develop at least one thyroid nodule during their lifetime, particularly as they age — and many people never know they have one unless an ultrasound is performed.

Why do thyroid nodules form?

Thyroid nodules can develop for a variety of reasons, including:

Long-term nutrient imbalances (such as iodine, selenium, zinc or iron)
Chronic thyroid stimulation from elevated TSH
Autoimmune thyroid conditions such as Hashimoto’s thyroiditis
Hormonal influences, particularly in women
Inflammation or structural changes within the thyroid gland

Importantly, it is very common for people with thyroid nodules to have completely normal thyroid blood tests. Blood tests measure hormone levels, but they do not always reflect structural changes within the gland.

If you have been told you have a thyroid nodule, it can be helpful to understand why it may have formed and whether any underlying factors could be influencing thyroid health. In my clinic I often help patients interpret thyroid ultrasound findings alongside blood tests, nutrient status and broader metabolic factors so that the full picture becomes clearer.

If you would like to explore this topic in more detail, including the different types of thyroid nodules, when they require further investigation, and how they are monitored, you can read the full article here.

12. Are thyroid nodules dangerous?

Most thyroid nodules are not dangerous. In fact, the majority are benign growths that never cause serious health problems.

According to the American Thyroid Association, only about 5–10% of thyroid nodules are cancerous, meaning the vast majority are harmless and can simply be monitored over time. The most common thyroid cancer, papillary thyroid carcinoma, typically grows slowly and often has an excellent prognosis when detected early.

Doctors usually assess nodules using a thyroid ultrasound, which helps determine whether a nodule has characteristics typical of benign growths or whether further testing may be needed.

Features that doctors evaluate include:

Size of the nodule
Shape and margins
Whether the nodule is solid or cystic
Blood flow patterns
Presence of calcifications

If a nodule appears suspicious or grows beyond a certain size, a fine needle aspiration biopsy may be recommended to examine the cells more closely.

In my clinic I often see people who have been told they have thyroid nodules but have not been given a clear explanation of what they mean. Looking at the ultrasound findings alongside thyroid blood tests, nutrient status and overall health patterns can often help provide a much clearer understanding of what is happening.

For a deeper explanation of the different types of nodules and how they are investigated, see the full thyroid nodules article.

13. Can thyroid nodules shrink naturally?

In some cases, thyroid nodules can reduce in size over time, although this depends on the type of nodule and the factors contributing to its formation.

Fluid-filled nodules (cysts) may sometimes shrink or fluctuate naturally. Other nodules may remain stable for many years without changing significantly. The Mayo Clinic notes that many thyroid nodules remain stable or benign and may only require periodic monitoring rather than immediate treatment.

Supporting overall thyroid health may help create an environment where the thyroid tissue functions more optimally. This can involve addressing factors such as:

Nutrient status (including iodine, selenium, zinc and iron)
Inflammation and immune activity
Hormonal balance
Metabolic health

For example, autoimmune thyroid conditions such as Hashimoto’s thyroiditis can influence the structure of the thyroid gland, sometimes creating nodular or irregular areas within the tissue.

While natural support strategies cannot guarantee that nodules will shrink, addressing underlying drivers may help support healthier thyroid function overall.

In my practice I often work with people who want to understand why thyroid nodules may have developed and what steps may help support thyroid health moving forward, alongside appropriate medical monitoring.

For a more detailed discussion on this topic, see the full article on thyroid nodules.

14. Do thyroid nodules cause symptoms?

Many thyroid nodules cause no symptoms at all and are only discovered during imaging tests such as ultrasound scans. As the British Thyroid Foundation explains, most thyroid nodules are detected incidentally and do not cause noticeable symptoms.

However, some people may notice symptoms if a nodule becomes larger or presses on nearby structures in the neck.

Possible symptoms can include:

A visible lump in the neck
A sensation of fullness or pressure in the throat
Difficulty swallowing
Hoarseness or voice changes
Discomfort when lying down

In most cases, nodules do not significantly affect thyroid hormone production, which means blood tests may still appear normal.

Occasionally, certain nodules can produce thyroid hormones independently. These are sometimes called autonomous or “hot” nodules and may contribute to symptoms of overactive thyroid function.

Understanding whether symptoms are related to the thyroid itself or to other metabolic or hormonal influences often requires a broader assessment. In my clinic I frequently help patients interpret ultrasound findings, thyroid blood tests and associated symptoms together, which can provide a clearer picture of what may be influencing thyroid health.

For a full explanation of thyroid nodule symptoms and investigations, see the detailed thyroid nodules guide.

15. Why do I have thyroid nodules if my blood tests are normal?

This is one of the most common questions people ask after discovering they have thyroid nodules.

Thyroid blood tests measure hormone levels circulating in the bloodstream, but they do not always reflect structural changes within the thyroid gland itself. As the American Association of Clinical Endocrinology notes, many thyroid nodules are detected in people with completely normal thyroid hormone levels — including normal TSH, T4 and T3.

Imaging tests such as thyroid ultrasound assess the structure of the thyroid gland, which is different from how well the gland is producing hormones.

Nodules can form due to factors such as:

Long-term thyroid stimulation
Nutrient imbalances
Autoimmune thyroid activity
Hormonal influences
Tissue changes that occur with age

Autoimmune thyroid conditions such as Hashimoto’s thyroiditis may also create irregular areas within the thyroid that can appear as nodules or pseudonodules.

If you have been told your blood tests are normal but nodules are present, it can be helpful to look at the broader thyroid picture, including imaging findings, nutrient status and metabolic factors.

This is something I often help patients work through in clinic, as understanding the “why” behind thyroid changes can make the situation far less confusing.

You can explore this topic further in the full thyroid nodules article.

16. When should a thyroid nodule be biopsied?

Not all thyroid nodules need a biopsy. In many cases, nodules are simply monitored with periodic ultrasound scans to ensure they remain stable over time.

A biopsy is usually recommended when a thyroid nodule has features that suggest it should be examined more closely. Clinical guidance from the American Thyroid Association recommends fine needle aspiration biopsy for thyroid nodules that meet specific ultrasound and size criteria.

A procedure called a fine needle aspiration biopsy (FNA) may be recommended if:

The nodule is larger than about 1 cm and has suspicious ultrasound features
The nodule is larger than 1.5–2 cm, even if it appears mostly benign
The nodule shows irregular borders or unusual shape
Micro-calcifications are seen within the nodule
There is increased blood flow within the nodule
Nearby lymph nodes appear abnormal

What does a fine needle aspiration biopsy involve?

A fine needle aspiration biopsy is a straightforward, minimally invasive procedure that is usually performed in an outpatient setting. A very thin needle is inserted into the nodule — typically under ultrasound guidance so the clinician can see exactly where they are working — and a small sample of cells is collected. The procedure usually takes only a few minutes, and most people find it no more uncomfortable than a routine blood test.

The cells collected are then examined under a microscope by a pathologist to determine whether they are benign or whether further investigation is required. The reassuring news is that most thyroid nodule biopsies confirm the nodule is benign.

Occasionally, biopsy results may be unclear or “indeterminate,” in which case doctors may recommend additional monitoring or repeat testing.

If you have been told you have a thyroid nodule, it can be helpful to understand how ultrasound findings, biopsy results, thyroid blood tests and overall health patterns fit together. In my clinic I often assist patients in interpreting these results so they have a clearer understanding of what is happening with their thyroid and what steps may be appropriate moving forward.

For a more detailed explanation of thyroid nodules, including types, causes and monitoring strategies, see the full thyroid nodules article.

17. Can thyroid nodules cause fatigue or weight gain?

Thyroid nodules themselves do not usually cause fatigue or weight gain directly. According to the American Thyroid Association, most nodules do not affect thyroid hormone levels and many people with nodules have normal thyroid function tests. Most nodules are simply structural changes within the thyroid gland and do not significantly affect hormone production.

However, some people with thyroid nodules also have underlying thyroid conditions that may influence symptoms.

For example, autoimmune thyroid disorders such as Hashimoto’s thyroiditis can affect the structure of the thyroid gland and may lead to both nodules and reduced thyroid hormone production over time. When thyroid hormone levels decline, symptoms such as fatigue, weight gain, cold intolerance and low mood may occur.

In other situations, thyroid blood tests may appear normal while individuals still experience symptoms related to broader metabolic or hormonal factors.

This is why it can be helpful to look at thyroid health from a wider perspective, including thyroid hormone levels, immune activity, nutrient status and overall metabolic health.

In my clinic I often work with people who have been told their thyroid tests are “normal” but still feel unwell. Taking a more comprehensive look at thyroid function and the factors that influence it can sometimes provide useful insights.

For a deeper explanation of thyroid nodules and how they relate to thyroid health, see the full thyroid nodules article.

18. Can iodine help thyroid nodules?

Iodine is an essential nutrient required for the production of thyroid hormones, and inadequate iodine intake has historically been associated with thyroid enlargement and nodular thyroid disease.

However, iodine and thyroid nodules have a complex relationship, and supplementation is not always appropriate for every individual.

In areas where iodine deficiency has been common, increasing iodine intake has helped reduce rates of goitre and nodular thyroid enlargement. However, as the World Health Organization recognises, both deficiency and excess iodine intake can influence thyroid health — meaning that excessive supplementation may sometimes worsen certain thyroid conditions, particularly autoimmune thyroid disorders such as Hashimoto’s thyroiditis.

Iodine supplementation should ideally be considered in the context of a person’s overall thyroid health, including:

Thyroid blood tests
Iodine intake from diet
Autoimmune thyroid markers
Other nutrients important for thyroid function, such as selenium and zinc

In clinical practice, it is often helpful to assess the broader thyroid environment rather than focusing on iodine alone. In my clinic I frequently work with patients to assess nutrient status, thyroid test results and ultrasound findings together so that any nutritional support for thyroid health can be tailored appropriately.

If you would like to explore this topic in greater detail, including the different types of thyroid nodules and how they are monitored, you can read the full thyroid nodules article.

You may also wish to read the article on Understanding Your Thyroid Ultrasound Report.

19. How do I check if I need iodine?

Iodine is essential for the production of thyroid hormones T3 and T4, so checking your levels can be an important part of understanding your thyroid health. Iodine testing is best interpreted alongside your symptoms and other thyroid markers, rather than in isolation.

The best way to assess iodine status is through a 24-hour urine collection. This involves collecting all of your urine over a 24-hour period in a special container, then sending a small sample to the lab. This method gives a more reliable picture of your urinary iodine output than a one-off sample.

A spot urine iodine test can also be done and is more convenient, though it is not as accurate as the 24-hour version.

Another option is the urinary iodine challenge test, which is more commonly used in integrative and functional medicine practice. This involves first doing a spot urine test as a baseline, then taking a measured dose of iodine (provided in the test kit), followed by a 24-hour urine collection. The results are interpreted as follows:

Deficient — if little iodine is excreted, this suggests your body retained most of it due to low stores
Replete (sufficient) — if most of the iodine is excreted, this indicates your body did not need it and your levels are adequate

For reference, the WHO considers a urinary iodine level of 100–199 µg/L to be adequate for most adults, which can help put your results into context when discussing them with your practitioner.

[IMAGE: Iodine testing methods infographic]

Seeing Sue for naturopathic support for thyroid health

Clients travel from across the Sunshine Coast to visit Sue in clinic, and connect online from beyond the region because they are seeking a practitioner who takes the time to investigate thoroughly and explain clearly.

This is not rushed care. It is thoughtful, structured, investigative support.

A final word

After 33+ years in practice, I am even more convinced of this:

Symptoms are not random. They are information.

When we listen carefully, test appropriately, and address the underlying drivers — meaningful change becomes possible.

If you are ready to explore what may be contributing to your thyroid symptoms, I welcome you to book a consultation. Or read more about Sue and how she works with clients here.