Thyroid Health

The thyroid is a small gland with an outsized influence on the body. It plays a role in metabolism, energy, mood, weight regulation, temperature control, heart rate, digestion, hormonal balance, and cognitive function. When it isn't working the way it should, the effects tend to show up almost everywhere.

One of the challenges with thyroid dysfunction is that standard testing often only tells part of the story. A basic panel typically measures TSH alone, and many people with real, persistent symptoms are told their levels fall within a "normal" range, a range functional clinicians consider too broad to catch everything worth catching. In my practice, I look beyond TSH to build a fuller picture of what's actually happening.

Patterns I look at

Hashimoto's thyroiditis. Hashimoto's is an autoimmune condition where the immune system gradually impairs the thyroid's ability to produce hormone. It's the leading cause of hypothyroidism, and it's often either undiagnosed or managed with medication alone. Hashimoto's has been linked to gut health, intestinal permeability and dysbiosis are recognized contributors to autoimmune thyroid activity, so gut-directed support is often a meaningful part of how I approach it.

Hypothyroidism. An underactive thyroid slows down metabolic processes throughout the body. Symptoms tend to build gradually and are easy to attribute to something else, fatigue, weight gain, brain fog, constipation, feeling cold when others don't, dry skin, hair thinning, low mood, and memory difficulty are common. I look at the full picture, including free T3, free T4, and thyroid antibodies, rather than TSH in isolation.

Subclinical hypothyroidism. This describes a pattern where TSH is elevated but T3 and T4 remain in range. It's often met with a watch-and-wait approach, but the symptoms, fatigue, difficulty managing weight, brain fog, can be very real for the person experiencing them. Nutritional and herbal support at this stage may help, and in some cases may help prevent progression to overt hypothyroidism.

Hyperthyroidism and Graves' disease. An overactive thyroid speeds up bodily processes, rapid heartbeat, unexplained weight loss, excessive sweating, insomnia, anxiety, irritability, and sometimes changes to the eyes in Graves' disease specifically. Naturopathic support can help manage symptoms, address inflammatory contributors, support the cardiovascular system and other vulnerabilities while working alongside medical treatment.

Thyroid and hormonal balance. Thyroid function and reproductive hormones are closely linked. Suboptimal thyroid function can disrupt the menstrual cycle, contribute to estrogen dominance, affect progesterone production, and worsen PMS, PCOS, and perimenopausal symptoms. I assess thyroid function as part of any hormonal case rather than treating the two as unrelated.

Why a full thyroid panel matters

A standard test usually measures TSH, a signal from the pituitary telling the thyroid to produce more hormone. It's a useful marker, but on its own it doesn't show how much active hormone is actually circulating, how well T4 is converting to the active T3 form, or whether thyroid antibodies are present. I typically recommend a fuller panel, free T3, free T4, TSH, and thyroid antibodies (anti-TPO and anti-thyroglobulin), since meaningful findings are sometimes missed when only TSH is checked.

What can contribute to thyroid dysfunction

Nutrient status. The thyroid depends on iodine, selenium, zinc, iron, and tyrosine to produce and convert hormone. Deficiencies in any of these, selenium and zinc in particular are common, can affect thyroid function. I look at this through testing rather than assumption.

Gut health. A meaningful portion of T4-to-T3 conversion happens in the gut, so a disrupted or inflamed gut can affect thyroid hormone availability independent of how the gland itself is functioning. There's also a recognized link between intestinal permeability and autoimmune thyroid conditions, which is part of why gut testing is often part of my thyroid workup.

Chronic stress and cortisol. Elevated cortisol can suppress TSH output and interfere with T4-to-T3 conversion. Stress is a commonly overlooked contributor to thyroid dysfunction, which is why I tend to look at the adrenal-stress picture alongside thyroid support rather than separately.

Inflammation. Systemic inflammation can affect thyroid function through several pathways, including reduced TSH output, impaired conversion, and increased autoimmune activity. Addressing inflammatory load through diet, gut support, and targeted nutrients is often part of the plan.

Environmental and dietary factors. Large quantities of raw goitrogenic vegetables, excess fluoride, and certain toxins can interfere with thyroid function. Gluten has a specific relationship with Hashimoto's in particular, a proposed mechanism involving molecular similarity between gliadin and thyroid tissue, which is part of why a gluten-free trial is something worth exploring for some patients with autoimmune thyroid activity. Endocrine distruptors in the environment may also play a role in the balance of hormones and signalling.

Common symptoms

Hypothyroidism and Hashimoto's:

  • Persistent fatigue and low energy

  • Brain fog and difficulty concentrating

  • Unexplained weight gain or difficulty losing weight

  • Feeling cold when others don't

  • Dry skin, brittle nails, hair thinning

  • Constipation and slow digestion

  • Low mood

  • Elevated cholesterol

  • Menstrual irregularity

  • Morning puffiness, especially around the eyes

Hyperthyroidism and Graves' disease:

  • Rapid or irregular heartbeat

  • Unexplained weight loss

  • Excessive sweating and heat intolerance

  • Insomnia

  • Anxiety, irritability, mood changes

  • Trembling hands

  • Changes to the menstrual cycle

  • Eye changes (in Graves' disease)

My approach

Every thyroid case starts with an in-depth initial consultation covering your symptom picture, health history, prior bloodwork, diet, stress load, gut health, and hormonal history. From there, I build a personalized plan that may include functional testing, herbal medicine, nutritional support, dietary changes, and gut-directed treatment where relevant.

I work alongside your GP and existing care team, and I'm comfortable supporting patients who are already on thyroid medication but still experiencing symptoms, a common and understandably frustrating situation that naturopathic support can complement well.