Tania Lewis, Naturopath, Rutherglen VIC
Tania Lewis is a naturopath based in Rutherglen, Victoria, with fifteen years of clinical experience as a Registered Nurse. She works with women in perimenopause and post-menopause whose thyroid symptoms have been put down to menopause, or who have been told their results are normal despite how they feel. She assesses thyroid function within the full hormonal and metabolic picture rather than in isolation. She sees clients in Rutherglen and Yarrawonga, and consults online with clients across Australia.

Thyroid-supportive whole foods including Brazil nuts, pumpkin seeds, leafy greens, seaweed, and eggs on cream linen

When it’s the thyroid, and no one’s looking

You’re exhausted in a way sleep doesn’t touch. Your weight has crept up despite no real change in how you eat. Your hair’s thinning, you’re cold when no one else is, and your mood and memory feel flat.

You’ve probably been told it’s menopause, or stress, or just getting older. Maybe your thyroid was tested and came back normal. So the conversation ended, and you were left to carry on.

Here’s the problem. Thyroid symptoms and menopause symptoms overlap almost completely. That overlap is exactly why a struggling thyroid gets missed at this stage of life. When two things look identical, the one no one’s investigating tends to win.

This page is for you if

You’re in perimenopause or post-menopause and persistently exhausted

You’ve gained weight without a clear change in diet or activity

You’re cold when others aren’t, and your hands and feet stay chilly

Your hair is thinning, or your skin has become dry

Your mood is flat and your thinking feels foggy

You’ve been told your thyroid results are normal, but you don’t feel it

Your TSH was tested, but free T3, free T4, and antibodies weren’t

You suspect your thyroid, but the conversation stopped at one number

You want a thorough clinical assessment, not a generic protocol

What’s actually happening in your body

Your thyroid sets the pace of your metabolism. It governs how much energy your cells make, how warm you stay, how your mood holds, and how your body manages weight. When it slows, everything it touches slows with it.

Two things make the thyroid vulnerable in midlife. Menopause itself changes how the thyroid behaves, and the thyroid depends on systems that also shift at this stage: the HPT axis, your gut, and your nutrient status. Here’s how it fits together.

The HPT axis and the menopause overlap

Your thyroid runs on a feedback loop called the HPT axis, the hypothalamic-pituitary-thyroid axis. Your brain signals your thyroid via TSH, your thyroid produces T4, and your body converts T4 into the active hormone T3. A problem anywhere along that chain shows up as thyroid symptoms.

The menopause transition measurably increases thyroid risk. A study of over 53,000 women found the prevalence of both overt and subclinical hypothyroidism rose significantly during the late menopausal transition and after menopause, compared with pre-menopause (Kim et al., 2022). So this isn’t a coincidence of timing. The thyroid is genuinely more likely to falter now.

The catch is that a slowing thyroid and menopause produce the same picture: fatigue, weight gain, low mood, brain fog, and temperature changes. A review by Australian researchers Davis and Baber describes how the cardinal symptoms of menopause stem from the loss of ovarian oestrogen (Davis & Baber, 2022), and those symptoms map almost exactly onto an under-active thyroid. When both are plausible, the thyroid is the one that quietly gets attributed to menopause and left uninvestigated.

Why one number rarely tells the story

Standard thyroid screening usually checks TSH alone. TSH is a brain signal, not a direct measure of thyroid hormone, so a TSH inside range can still sit alongside low free T3, the active hormone your cells actually use.

Conversion matters here. Your body has to turn T4 into T3, and that conversion depends on nutrients, gut health, and low inflammation. If conversion is poor, your TSH and T4 can look acceptable while your active T3 runs low and you feel every bit of it.

Thyroid antibodies are the other gap. Autoimmune thyroid conditions like Hashimoto’s are common in women, and antibodies often rise before TSH moves. If antibodies aren’t tested, an early autoimmune picture goes unseen until it’s more advanced.

The gut-thyroid connection

Your gut and your thyroid are linked more directly than most people realise. Gut bacteria assist the conversion of T4 into active T3, and a disrupted microbiome can impair it.

Research on the gut-thyroid axis found that people with primary hypothyroidism had altered gut bacteria and reduced short-chain fatty acid production, and that transplanting their gut flora into mice lowered the animals’ thyroid hormone levels (Su et al., 2020). The animal findings are preliminary, but the direction is clear: gut health and thyroid function influence each other.

This matters in menopause because gut ecology shifts at the same time as oestrogen falls. A gut under strain is one more reason thyroid conversion struggles at this stage, which is why I assess the two together.

Nutrients the thyroid can’t work without

The thyroid needs specific raw materials: iodine and tyrosine to build hormone, and selenium, zinc, and iron to convert and use it. Low iron in particular is common in perimenopause with heavier or erratic bleeding, and it directly impairs thyroid function.

When these run low, thyroid symptoms can appear or worsen even when the gland itself is capable. It’s often the missing inputs, not the thyroid alone, that need addressing.

Why the symptoms cluster

Put it together and the pattern is clear. Menopause raises thyroid risk, standard testing looks at one number, conversion falters when gut and nutrients are compromised, and the symptoms mirror menopause so closely that the thyroid escapes scrutiny. That’s why thyroid presentations in midlife need a wide lens, not a single blood value.

Why “normal” results don’t always mean normal

A TSH inside the reference range tells you that you don’t have overt thyroid disease. That’s useful, and if it’s clear, it’s worth knowing. But “not diseased” and “functioning well” aren’t the same thing.

Reference ranges are built to flag disease, not to define optimal function. Your TSH can sit in the upper range, your free T3 can run low-normal, and your antibodies can be climbing, all while you’re told everything’s fine.

The gap between ‘not diseased’ and ‘functioning well’ is where many women in perimenopause and beyond find themselves.

This is where a fuller read helps. Functional blood chemistry interpretation reads TSH, free T3, free T4, and antibodies against optimal ranges rather than disease thresholds, so a pattern that’s forming, not yet failing, doesn’t get missed.

A clipboard, pen, and a single plain glass vial with dried herbs in a vase on a wooden desk

Two plain amber dropper bottles beside Brazil nuts, pumpkin seeds, eggs, and dried herbs on a wooden surface

How I work with this presentation

I’m a naturopath with a clinical background in acute nursing, which means I take a full history and read pathology closely. For a thyroid presentation in perimenopause or menopause, the assessment covers:

Your full symptom history and timeline, mapped against your hormonal changes

A review of existing thyroid pathology, and which markers were and weren’t tested

Where clinically appropriate, a fuller thyroid panel: TSH, free T3, free T4, and antibodies

Iron studies, selenium, zinc, and other nutrients thyroid function depends on

Digestive function and gut health, given the gut-thyroid connection

Stress load and the HPA axis, which interacts with thyroid output

My approach is food-first and addresses the gut, nutrient, and metabolic factors that thyroid function relies on. Where a fuller thyroid panel or antibody testing is warranted, I’ll explain what to request and why.

I work alongside your GP and other treating practitioners, not in opposition to them. Thyroid disease is a medical diagnosis, and if your assessment points to one, or to a medication review, I’ll refer you and say so plainly.

What clients commonly notice

In my clinical experience, energy and temperature regulation are often where women notice change first, once nutrient gaps are addressed and thyroid conversion has the support it needs. That early lift tends to be the most encouraging sign.

The deeper work, particularly where gut health, autoimmunity, or long-standing nutrient depletion is involved, takes longer. Most clients begin to notice meaningful shifts within four to twelve weeks, with continued change beyond that. Mood, hair, and weight tend to follow energy rather than lead it.

I don’t promise specific outcomes, and I don’t treat diagnosed thyroid disease in place of medical care. What I offer is a clear picture of what’s driving your symptoms and a structured plan to support thyroid function.

Consultations and pricing

Initial Clinical Assessment — $220 (60-75 minutes)

A thorough assessment of your thyroid symptoms, hormones, and nutrient status, after which you’ll receive a written treatment plan.

Follow-up Consultation — $150 (30-45 minutes)

A structured review of your progress, with refinement of your plan as your thyroid function responds.

Clarity Call — complimentary (10 minutes)

A short phone call to see whether we’re a good fit. No clinical advice is given on this call.

Frequently asked questions

Can a naturopath help with thyroid problems in menopause?

In my clinical experience working with women in perimenopause and beyond, thyroid symptoms respond well when the full picture is assessed: thyroid markers, nutrients, gut health, and the hormonal context together. A study of more than 53,000 women found hypothyroidism becomes significantly more common through the late menopausal transition and after menopause (Kim et al., 2022). That means there’s a real, measurable reason your thyroid may be struggling now. My role is to identify what’s driving your presentation and support thyroid function with a food-first plan, working alongside your GP.

Kim, Y., Chang, Y., Cho, I. Y., Kwon, R., Lim, G. Y., Jee, J. H., Kang, M., & Ryu, S. (2022). The prevalence of thyroid dysfunction in Korean women undergoing routine health screening: A cross-sectional study. Thyroid, 32(7), 819-827. https://doi.org/10.1089/thy.2021.0544

My thyroid test was normal but I still have every symptom. What does that mean?

It usually means one thing was tested, not everything. Most standard screening checks TSH alone, which is a brain signal rather than a direct measure of active thyroid hormone. Your TSH can sit in range while your free T3, the hormone your cells actually use, runs low, or while thyroid antibodies are rising. A fuller panel, read against optimal rather than disease-threshold ranges, often explains symptoms that a single normal TSH leaves unaccounted for.

How common is an under-active thyroid in women my age?

More common than most women are told. Subclinical hypothyroidism affects between 3 and 12 percent of the general population, and its cardio-metabolic effects can be worsened by the hormonal changes of menopause (Capozzi et al., 2022). Women are affected far more often than men, and risk rises with age. So if you’re in midlife with the classic symptoms, an under-active or under-supported thyroid is a reasonable thing to investigate properly, not dismiss.

Capozzi, A., Scambia, G., & Lello, S. (2022). Subclinical hypothyroidism in women’s health: From pre- to post-menopause. Gynecological Endocrinology, 38(5), 357-367. https://doi.org/10.1080/09513590.2022.2046728

Do I need to stop my thyroid medication or HRT to work with you?

No. I don’t ask you to stop thyroid medication or HRT to work with me. If you’re on thyroxine, that stays part of your clinical picture, and naturopathic support works around it, not against it. Both medications inform your assessment and plan. If anything I find suggests a dose review or a conversation with your prescriber, I’ll tell you, and I work alongside your GP.

What’s the difference between seeing a naturopath and seeing my GP for my thyroid?

Your GP diagnoses and manages thyroid disease, prescribes thyroxine, and monitors it, which is essential and something I rely on. My focus is different and complementary. I look at how well your thyroid is functioning within the context of your nutrients, gut health, and hormones, and I have longer to do it. The Initial Clinical Assessment runs 60 to 75 minutes, which gives room to map the full picture and leave you with a written plan. I support function; I don’t replace medical diagnosis or treatment.

How long before I notice a difference?

Energy and temperature regulation often improve first, sometimes within the first few weeks, once nutrient gaps are addressed and thyroid conversion is supported. Deeper change, especially where gut health or autoimmunity is involved, takes longer, and most clients notice meaningful shifts within four to twelve weeks. Your timeline depends on what’s driving the picture, which is part of what the assessment clarifies.

Have more questions about how naturopathic care works or what to expect from a consultation? Visit the FAQ page. For the gut-thyroid link, see Gut health in perimenopause and menopause, for the effect on sleep, see Sleep disruption in perimenopause and menopause, and for the closely related symptoms of fatigue and weight change, see Fatigue, weight gain and low energy in perimenopause and menopause.

You can find me in person, and online across Australia

In person —
Rutherglen, VIC

74 Main Street,
Rutherglen VIC
Wednesday, Thursday

In person — Yarrawonga, VIC

31-33 Belmore Street, Yarrawonga VIC
Friday

Telehealth

Available to clients anywhere in Australia.
All consultation types are available via telehealth during the Rutherglen hours.

All appointments are booked online. Full prepayment is required.
A 48-hour cancellation and rescheduling policy applies.

Ready to take a proper look?

Thyroid symptoms in midlife are too often filed under menopause and left there. The Initial Clinical Assessment gives you a thorough look at your thyroid function within the full hormonal and nutrient picture, and a written plan to work from.

If you’re not sure whether this is the right fit, the Clarity Call is a good place to start. It’s ten minutes by phone, no obligation.

Book an Initial Clinical Assessment

Book a Clarity Call

This page is general information, not personal medical advice. It doesn’t replace individual assessment or care from your GP or treating practitioners. Thyroid disease requires medical diagnosis and management. Book a consultation for advice specific to your situation.

Thyroid health in perimenopause and menopause