By Miriam Young — Clinical Herbalist & Naturopath, Brisbane | miriamyoung.health
When your Thyroid Speaks – I see women who walk in exhausted. Waking up after a full night’s sleep yet still feeling tired. She’s gained weight despite eating well. She’s freezing cold. Her hair is thinning, her thinking is foggy, and somewhere along the way she’s too tired to care for her own needs.
She has been to her GP, more than once and has been told, more than once, that everything is fine. Sadly this is far too common.
TSH Tells Us Very Little — And Here’s Why
TSH — Thyroid Stimulating Hormone — is not a thyroid hormone at all. It’s a pituitary hormone. It’s produced by a small gland at the base of your brain, not your thyroid. Its job is simply to tell the thyroid to make more hormone. Think of it as a messenger, not the message itself.
When doctors test TSH, they’re not measuring what your thyroid is actually doing. They’re measuring what your brain is asking it to do. That’s a very different thing.
A normal TSH tells us the brain isn’t in a state of panic about thyroid hormone levels. It doesn’t tell us how much active thyroid hormone is reaching your cells. It doesn’t tell us whether your T4 is converting properly into T3. It doesn’t tell us if your immune system is quietly attacking your thyroid gland. And it says absolutely nothing about whether you feel well.
The T4 to T3 Conversion Problem
This is something I talk about constantly in clinic, because it’s so often the missing piece.
Your thyroid makes two main hormones — T4 and T3. T4 is made in far greater quantities, but it is largely inactive. It’s essentially a storage form. Before your body can actually use it, T4 has to be converted into T3 — the active hormone that drives your energy, your metabolism, your body temperature, your mood, and your ability to think clearly. T3 is what gets you out of bed in the morning.
The conversion needs a healthy liver, a healthy gut, good levels of selenium, zinc, iodine and Vitamin D3, low inflammation, and adrenal glands that aren’t running on empty.
For a lot of women — particularly those under chronic stress — this conversion is impaired. T4 looks fine on a blood test. TSH looks normal. But T3, the hormone your cells actually run on, is quietly insufficient. And you feel every bit of it.
There’s another layer too. When the body is chronically stressed or inflamed, it can convert T4 into something called Reverse T3 instead of active T3. Reverse T3 is biologically inactive — and it actually blocks the receptors that active T3 needs to do its job. So your test results look fine, but at the cellular level, your thyroid hormones simply aren’t getting through.
A full thyroid blood profile is essential — not just TSH and T4, but Free T3, Reverse T3, and thyroid antibodies, along with iodine, Vitamin D, and B12, all of which have a profound impact on how well your thyroid functions.
The “Normal Range” Is Not the Same as the Optimal Range
Here’s something else that rarely gets explained.
The standard TSH reference range in Australia runs from approximately 0.5 to 4.0. A TSH of 3.9 is technically normal. So is a TSH of 0.6. But for many women — particularly those with Hashimoto’s — those two numbers feel worlds apart.
Research shows that most people feel best with a TSH in the lower part of the range, around 1.0 to 2.0. A TSH of 3.5 might be within the laboratory’s acceptable window, but it can be enough to cause significant fatigue, weight gain, and cognitive fog in someone who is sensitive.
Aiming for optimal looks different for every person. That’s why I work from your full clinical picture — your symptoms, your history, your energy, your bloods — not just a single number on a pathology report.
What a Complete Thyroid Panel Actually Looks Like
Every new client I see gets a comprehensive thyroid panel through a private pathology laboratory. This is what that looks like:
TSH — useful as one data point, but never in isolation
Free T4 — how much inactive thyroid hormone is circulating
Free T3 — the active hormone your cells actually use; this is frequently the missing piece
Reverse T3 — to check whether the conversion pathway is working in your favour or against you
TPO Antibodies — the key marker for Hashimoto’s thyroiditis
Thyroglobulin Antibodies — a second antibody marker that is sometimes missed when only TPO is tested
Iodine — your thyroid literally cannot make hormones without it
Vitamin D — deeply connected to immune regulation and thyroid antibody levels
B12 — frequently low in hypothyroidism, and a major driver of fatigue and neurological symptoms
It is remarkable — and honestly infuriating — how often this panel reveals what years of TSH-only testing has completely missed.
Hashimoto’s — The Condition That Hides Behind a Normal TSH
This is so true, and so often overlooked.
Hashimoto’s thyroiditis is an autoimmune condition where the immune system attacks the thyroid gland. It is the most common cause of hypothyroidism in Australia. And in its early and middle stages, TSH can remain entirely normal for years — while the immune attack is already well underway.
Antibodies can be significantly elevated. The thyroid can be actively inflamed and damaged. And TSH? Perfectly normal.
By the time TSH becomes abnormal, substantial thyroid tissue may already have been lost. Which is why catching Hashimoto’s early — through antibody testing — changes everything. It means we can calm the immune response, heal the gut, remove the dietary triggers that are driving the antibody load, and genuinely protect what remains of the thyroid. Rather than waiting for things to get bad enough that medication becomes unavoidable.
Susanna for instance, came to me with profound fatigue, weight gain, hair loss, and IBS. Her TSH had been normal every time it was tested. When we ran the full panel, her thyroid antibodies were significantly elevated — confirming Hashimoto’s. Nine months later, after a comprehensive programme addressing her thyroid, her gut, her nutritional status, and the emotional patterns driving her immune dysregulation through Ma’at Healing Therapy, her antibodies had returned to zero. Clinically, she no longer meets the criteria for Hashimoto’s.
That is what’s possible when we look at the whole picture.
What I Do Differently
When you come to see me — whether in person at my Jindalee clinic in Brisbane’s western suburbs or via Zoom from anywhere in the world — we start with a proper conversation. About your history, your symptoms, your stress, your gut, your sleep, your life. And then we run the tests that will actually tell us what’s going on.
From there, I create a bespoke herbal tincture formula — drawn from a comprehensive dispensary of plant medicines from around the world — targeting your thyroid directly, supporting T4 to T3 conversion, modulating immune activity, supporting your adrenal glands, and addressing gut health simultaneously.
Nutritional support is always part of the programme. Selenium, zinc, magnesium, iodine, Vitamin D, B12 — all at therapeutic levels, informed by your individual results.
Gut health is always part of the picture too — the gut plays a direct role in thyroid hormone conversion and immune regulation, and addressing it alongside the thyroid consistently accelerates results.
And I incorporate Ma’at Healing Therapy — an energetic healing modality that works with the deeper emotional patterns that so often sit beneath chronic thyroid disease. After 28 years in practice, I have seen time and again that the body holds what the mind has not had the chance to process. Working at this level, alongside everything else, consistently produces results that nothing else has reached.
You Are Not Imagining It
If your TSH is normal and you still feel terrible — you are not imagining it. You are not being dramatic. You are not just tired because you’re getting older.
Research consistently shows that a significant proportion of people on thyroid medication with normal TSH levels continue to experience persistent fatigue, weight gain, depression, and brain fog. The standard of care is failing them. It may be failing you.
You deserve someone who will actually listen to what your thyroid is trying to say.
Frequently Asked Questions
My TSH is normal but I have every symptom of hypothyroidism. What should I do? Ask your doctor for a full panel — Free T3, Free T4, Reverse T3, TPO antibodies, and Thyroglobulin antibodies. If they won’t order it, consider seeing a naturopath or integrative practitioner who will. A normal TSH is one data point. It is not the full story.
What is the difference between T3 and T4? T4 is the hormone your thyroid produces in the greatest quantity, but it’s largely inactive. It has to be converted into T3 — the active form — before your body can use it. That conversion depends on your gut, your liver, and your nutrient levels. When it doesn’t happen properly, you can have normal T4 and normal TSH and still feel awful.
What is Reverse T3 and why does it matter? Reverse T3 is an inactive form of thyroid hormone your body produces under stress or inflammation. It blocks the receptors that active T3 needs — meaning even if T3 is being produced, it can’t do its job properly. It’s rarely tested in standard panels, but it’s one of the most important pieces of the puzzle for people who feel hypothyroid despite normal results.
Can Hashimoto’s be present even when TSH is normal? Yes — and this is critical to understand. In the early and middle stages of Hashimoto’s, TSH can remain completely normal while antibodies are elevated and immune destruction of the thyroid is actively underway. The only way to identify it at this stage is to test antibodies — TPO-Ab and TG-Ab.
Do I need to come to Brisbane to work with you? Not at all. I offer Zoom telehealth consultations for clients throughout Australia and worldwide. Everything — the consultation, testing guidance, and your personalised herbal prescription — can be managed remotely, and many of my thyroid clients are interstate or international.
Can herbal medicine help if I’m already on thyroid medication? Absolutely. Herbal medicine works alongside thyroid medication, not instead of it. Many of my clients come to me already on thyroxine. The goal is to address the underlying causes so thoroughly that, over time, medication can potentially be reduced — always in consultation with your prescribing doctor. But most importantly, the goal is that you feel well.
Ready to Finally Be Heard?
Consultations are available in person at my Jindalee clinic in Brisbane’s western suburbs, and via Zoom telehealth for clients throughout Australia and worldwide.
Book a Consultation with Miriam →
Miriam Young is a Clinical Herbalist and Naturopath based in Brisbane, Australia, with 28 years in clinical practice. She is the author of Detox For Living, Natural Cleanses for Modern Disease, a number one Amazon bestseller. Her specialist focus includes Hashimoto’s, thyroid disease, gut health, kidney disease, IBS, liver health, and gallstones. She integrates Ma’at Healing Therapy into her consultations. Miriam sees clients in person in Brisbane and via Zoom telehealth worldwide.
Related Articles:
- The Gut-Hashimoto’s Connection — Why Healing Your Gut Heals Your Thyroid (published)
- The Complete Thyroid Blood Panel — What to Ask Your Doctor (coming soon)
- Is Your IBS Actually SIBO? What You Need to Know (coming soon)