Few health topics attract as much conflicting advice as thyroid conditions. Go gluten-free, avoid all cruciferous vegetables, take iodine, don’t take iodine — it’s genuinely difficult to know what to trust. Our Accredited Practising Dietitians provide clear, evidence-based nutrition support for Hashimoto’s, hypothyroidism, Graves’ disease and other autoimmune conditions, working alongside your GP and endocrinologist and the treatment they prescribe.
- ✓ Six Melbourne clinics, home visits and telehealth across Australia
- ✓ Practical guidance on food, supplements and medication timing
- ✓ Evidence-based advice, without unnecessary restriction or elimination
- ✓ Medicare (with a GP referral), NDIS, DVA, WorkCover and private health accepted
Thyroid Conditions Explained
Your thyroid is a small gland at the front of your neck that produces hormones regulating your metabolism, body temperature, energy levels, growth and development. Because those hormones influence virtually every tissue in the body, when the thyroid isn’t working well the effects can be wide-ranging and easy to mistake for something else.
Hypothyroidism — an underactive thyroid
This is when the thyroid doesn’t produce enough hormone. It can cause fatigue, weight changes, feeling cold, dry skin, hair changes, constipation and low mood. It’s the most common thyroid condition, and it’s treated with daily thyroid hormone replacement medication.
Hashimoto’s — autoimmune thyroiditis
Hashimoto’s is an autoimmune condition in which the immune system produces antibodies that gradually damage the thyroid gland. Over time this usually leads to hypothyroidism. In countries like Australia where iodine intake is generally adequate, Hashimoto’s is the most common underlying cause of an underactive thyroid.
Hyperthyroidism and Graves’ disease — an overactive thyroid
Here the thyroid produces too much hormone, which can cause unexplained weight loss, a rapid or irregular heartbeat, anxiety, tremor, heat intolerance and difficulty sleeping. Graves’ disease is the autoimmune form. Hyperthyroidism needs prompt medical assessment, particularly because of its effects on the heart.
All of these are diagnosed through blood tests — typically TSH, T4, T3 and thyroid antibodies — and sometimes an ultrasound. Diagnosis, medication and dose adjustments sit entirely with your GP or endocrinologist. Our role is to support you nutritionally alongside that care.
How Common Are Thyroid Conditions in Australia?
More common than most people realise, and frequently missed. The Australian Thyroid Foundation reports that well over one million Australians are living with an undiagnosed thyroid disorder, and that around 14% of older Australians have a clinically relevant thyroid condition. Worldwide, thyroid disorders affect roughly ten times more women than men.
Part of the reason diagnosis is often delayed is that the symptoms — tiredness, weight changes, low mood, feeling cold — are easily attributed to stress, ageing or a busy life. If those symptoms sound familiar and you haven’t had your thyroid checked, that’s a conversation worth having with your GP.
Australian research has also found that around a quarter of people already taking thyroid hormone replacement had blood results outside the target range. Treatment isn’t something you set once and forget — ongoing review with your doctor matters, and how you take your medication in relation to food genuinely affects how well it works.
What Nutrition Can — and Can’t — Do
We’ll be direct, because a great deal of what’s published about thyroid nutrition isn’t. Diet cannot replace thyroid hormone replacement medication, and it cannot repair a thyroid gland that has already been damaged. If your thyroid isn’t producing enough hormone, medication replaces what’s missing. No food, supplement or eating pattern does that job.
Please never stop, reduce or change your thyroid medication without speaking to your doctor first — including if you start feeling well. Thyroid hormone replacement is usually lifelong, and stopping it can make you seriously unwell. Anything you read online suggesting diet can take its place should be treated with real caution.
What nutrition genuinely does contribute is worthwhile, and it’s why seeing a dietitian is time well spent:
- ✓ Helping your medication work as well as it can, through sensible food and supplement timing
- ✓ Making sure you’re getting enough of the nutrients your thyroid depends on — without overdoing the ones that can cause harm
- ✓ Managing weight, energy, appetite and digestion changes that often come with thyroid conditions
- ✓ Replacing confusing, restrictive advice with an approach you can actually live with
- ✓ Supporting the other conditions that often accompany autoimmune thyroid disease
The Nutrients That Matter
Your thyroid relies on several specific nutrients — but with thyroid health in particular, more is not better. Several of these have a genuine upper limit where too much causes problems.
- Iodine — the raw material your thyroid uses to make hormone. Found in iodised salt, seafood, dairy and, in Australia, most commercially baked bread, which has been fortified since 2009. Deficiency is a problem, but so is excess
- Selenium — helps convert thyroid hormone into its active form and supports the gland against oxidative stress. Brazil nuts are the standout source, and just one or two a day generally covers your needs. Selenium is genuinely toxic in excess, so more is not better here either
- Iron — low iron is common, particularly in women, and it can worsen fatigue that’s already being blamed on the thyroid. Worth checking with your GP rather than assuming
- Zinc and vitamin D — both support thyroid function and immune regulation, and both are commonly low
A Word on Iodine and Kelp Supplements
Iodine and kelp supplements are marketed heavily to people with thyroid conditions, and this is one of the clearest examples of well-intentioned advice causing harm. Excess iodine — from high-dose supplements or large quantities of seaweed — can worsen autoimmune thyroid inflammation. If you have Hashimoto’s, taking extra iodine is generally not helpful and may make things worse. Bring any supplements you’re taking to your appointment and we’ll go through them with you.
Food, Timing and Your Medication
This is the practical piece most people are never told properly, and it’s where a dietitian can make an immediate, tangible difference. Thyroid hormone replacement is absorbed best on an empty stomach, and several everyday foods and supplements interfere with that absorption if taken too close together.
- Calcium and iron supplements — among the biggest culprits. These generally need to be well separated from your medication
- Soy foods — can affect absorption when eaten close to your dose. Spacing matters far more than avoiding soy altogether
- Coffee — drinking it too soon after taking your medication can reduce how much is absorbed
- High-fibre foods and fibre supplements — helpful for your health generally, but worth timing thoughtfully around your dose
The point isn’t to remove any of these from your diet — calcium, iron, soy, coffee and fibre all have a place. It’s about building a daily routine where your medication and your meals aren’t working against each other. For many people, a few small timing adjustments make a noticeable difference, and it’s one of the first things we work through together. Always follow the specific instructions from your doctor or pharmacist about how to take your medication.
Myths and Outdated Advice
You don’t need to avoid broccoli, cabbage and kale
People with thyroid conditions are routinely told to avoid cruciferous vegetables — broccoli, cabbage, kale, cauliflower, Brussels sprouts — because they contain compounds sometimes called goitrogens. In the normal amounts people actually eat, particularly when cooked, these vegetables aren’t a problem for thyroid function. Cutting out an entire family of nutritious vegetables makes eating well harder for no real benefit.
Gluten — worth testing, not worth blanket-avoiding
There’s a genuine connection here, but it’s often overstated. Autoimmune conditions cluster together, and coeliac disease is more common in people with autoimmune thyroid disease than in the general population. That makes testing for coeliac disease genuinely worthwhile — and it’s important to be tested before removing gluten, because going gluten-free first can make the test unreliable.
What the evidence doesn’t support is everyone with Hashimoto’s going gluten-free regardless of whether they have coeliac disease. If your coeliac test is negative, a strict gluten-free diet generally isn’t necessary, and it adds cost, restriction and social difficulty for limited return. If you do have coeliac disease, our gut health and coeliac support works alongside your thyroid care.
There is no single “thyroid diet”
Despite what the meal-plan industry suggests, no specific eating plan treats thyroid disease. What helps is a good overall pattern — plenty of vegetables, fruit, wholegrains and legumes, adequate protein, healthier fats, and enough of the key nutrients — built around your medication, your preferences and your life.
Nutrition Support for Other Autoimmune Conditions
Autoimmune conditions tend to travel together. If you have Hashimoto’s or Graves’ disease, you have a somewhat higher chance of another autoimmune condition — coeliac disease and type 1 diabetes are among the more common companions.
Nutrition can’t switch off an autoimmune process, and we won’t suggest otherwise. What it can do is support you while you live with one:
- An overall anti-inflammatory eating pattern, Mediterranean in style, which supports general health without extreme restriction
- Identifying and correcting nutrient gaps — common where symptoms, medications or long-term restrictive eating have limited variety
- Managing fatigue, appetite changes and digestive symptoms practically, day to day
- Helping you reintroduce foods safely if you’ve cut out more than you needed to along the way
If your autoimmune condition primarily affects your gut — coeliac disease or inflammatory bowel disease — our gut health service is the better starting point, and the two work well together.
Thyroid Health, Women and Pregnancy
Thyroid conditions affect women far more often than men, and they intersect with several life stages where nutrition already matters a great deal.
Iodine needs rise during pregnancy and breastfeeding, and iodine deficiency has been a recognised concern in Australia — which is why iodine is included in pregnancy supplements and why bread has been fortified since 2009. Thyroid function also affects fertility and pregnancy outcomes, so if you’re planning a pregnancy it’s worth discussing thyroid testing with your GP alongside your preconception nutrition.
Thyroid symptoms can also overlap confusingly with other stages and conditions. Fatigue, weight changes and low mood appear in perimenopause and menopause too, and PCOS/PMOS shares several features as well. Getting the picture clear with your GP matters — and our wider women’s health support can address several of these together rather than in isolation.
Our Approach to Thyroid Nutrition Care
We start with a thorough assessment — your diagnosis and recent blood results, your medication and when you take it, any supplements you’re using, your usual eating patterns, symptoms, and anything you’ve already cut out of your diet and why.
From there, we work with you to agree practical goals and milestones, and you’ll leave with a clear plan and a defined pathway — what to focus on first, what comes next, and how ongoing support is structured. Because thyroid treatment is monitored through repeat blood tests, we review and adjust as your results and your dose change over time.
Throughout, we share information with your GP and endocrinologist, with your consent, so your nutrition plan and your medical treatment work together rather than at cross purposes.
Thyroid Support From Our Whole Team
Care Across the Team
Thyroid conditions overlap with women’s health, gut health, weight, iron status and other autoimmune conditions — ground every dietitian at NutriBlooms works across. Where a presentation is complex, our in-house case-conferencing means your dietitian can bring in the Principal Dietitian or a colleague for a same-week second opinion, rather than you waiting weeks for another referral.
Recognised for Quality Care
NutriBlooms received the Dietitians Australia and Griffith University Quality in Primary Care Award in 2025, recognising excellence in patient-centred, evidence-based dietetic care.
Funding, Fees & Referrals
Since 1 July 2025, a single GP Chronic Condition Management Plan (GPCCMP) replaced the old GP Management Plan and Team Care Arrangements. Your GP can now refer with an ordinary referral letter, and you may be eligible for up to 5 subsidised individual allied health visits per calendar year, shared across all your allied health providers. Read more on the Services Australia GPCCMP page.
We accept referrals from your GP and from specialists such as endocrinologists, and you’re also welcome to book directly without a referral.
NutriBlooms is not a bulk-billing clinic — Medicare pays a rebate under a valid GPCCMP, and a gap fee applies. We also accept NDIS, DVA, WorkCover and private health extras cover. See our Referrals and Claiming page for full details.
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Frequently Asked Questions
Can diet cure Hashimoto’s, or do I still need medication?
Diet cannot cure Hashimoto’s or repair thyroid tissue that has already been damaged, and it cannot replace thyroid hormone replacement medication. Where your thyroid isn’t producing enough hormone, medication replaces what’s missing — and it’s usually needed lifelong. What nutrition does is help your medication work as well as it can, address nutrient gaps, and manage symptoms alongside your treatment. Please never stop or change your medication without speaking to your doctor.
Should I take an iodine or kelp supplement for my thyroid?
Generally no, unless your doctor has specifically advised it. This is one area where more is not better — excess iodine from high-dose supplements or large amounts of seaweed can worsen autoimmune thyroid inflammation. If you have Hashimoto’s, extra iodine is usually unhelpful and may make things worse. Bring any supplements you’re taking to your appointment and we’ll review them with you.
Do I have to avoid broccoli, cabbage and kale?
No. Cruciferous vegetables contain compounds sometimes called goitrogens, and older advice told people with thyroid conditions to avoid them. In the normal amounts people actually eat, particularly when cooked, these vegetables don’t cause problems for thyroid function. Cutting out a whole family of nutritious vegetables makes eating well harder for no real benefit.
Should I go gluten-free if I have Hashimoto’s?
Not automatically. Coeliac disease is more common in people with autoimmune thyroid disease, so getting tested for it is genuinely worthwhile — and it’s important to be tested before removing gluten, because going gluten-free first makes the test unreliable. If your coeliac test is negative, a strict gluten-free diet generally isn’t necessary and adds cost and restriction for limited return.
Why does my thyroid medication need to be taken on an empty stomach?
Thyroid hormone replacement is absorbed best without food in the stomach, and several everyday things interfere if taken too close together — calcium and iron supplements are among the biggest, along with soy foods, coffee and high-fibre foods. The aim isn’t to remove these from your diet but to build a routine where your medication and meals aren’t working against each other. Always follow the specific instructions from your doctor or pharmacist.
Can a dietitian help with thyroid-related weight changes?
Yes. Weight and appetite changes are common with both underactive and overactive thyroid conditions, and they can be frustrating because they often don’t respond the way people expect. We work on this alongside your medical treatment, since getting your thyroid levels into the right range with your doctor is an important part of the picture. Our approach is realistic and individualised rather than restrictive.
I have another autoimmune condition — can you help with that too?
Yes. Autoimmune conditions often cluster together, and we support people managing more than one. Nutrition can’t switch off an autoimmune process, but it can help with nutrient gaps, fatigue, appetite and digestive symptoms, and with safely reintroducing foods if you’ve cut out more than you needed to. If your condition primarily affects your gut, such as coeliac disease or inflammatory bowel disease, our gut health service is the better starting point.
Is there a gap fee, and what funding options are accepted?
NutriBlooms is not a bulk-billing clinic, so a gap fee applies alongside your Medicare rebate under a GP Chronic Condition Management Plan. We also accept NDIS, DVA, WorkCover and private health extras cover — see our Referrals and Claiming page for full details.
Clear Answers, Without the Confusion
If you’re tired of conflicting thyroid advice and lists of foods to avoid, our Accredited Practising Dietitians can help you build something workable — across six Melbourne clinics, home visits, and telehealth Australia-wide.