Can food really help with Hashimoto’s?

Yes, food can play a supportive role. Research suggests that certain nutrients and an anti-inflammatory eating pattern may help support thyroid function and reduce markers of inflammation for some people. A 2022 review in the International Journal of Molecular Sciences describes how nutritional management can complement standard treatment in Hashimoto’s.

The keyword is “support.” Food is one lever among several, alongside medication, sleep, stress, and movement. Thinking of nutrition this way takes the pressure off any single meal being make-or-break.

What the research does (and doesn’t) show

The honest answer is that the evidence is promising but still developing. A 2023 systematic review in Nutrients looked at nutritional interventions for Hashimoto’s. It found that some approaches show potential, while noting that many studies are small and more research is needed.

Here is what that means for you:

• What it does suggest: Adequate levels of certain nutrients, like selenium and vitamin D, may support thyroid health for people who are low in them.

• What it does not show: That a single “Hashimoto’s diet” works for everyone, or that food can replace medication.

• What it points to: Personalization matters, because your labs, symptoms, and other conditions shape what will actually help you.

That uncertainty is not a reason to ignore nutrition. It is a reason to be thoughtful and to personalize rather than chase strict rules.

The nutrients that matter most for your thyroid

Your thyroid depends on several nutrients to make and activate its hormones. When you are low in one of them, it can add to how you feel. The nutrients below come up most often in the research on thyroid health, including the International Journal of Molecular Sciences review. Food comes first, and any supplements are a decision to make with your care team.

Selenium

Selenium helps your body convert thyroid hormone into its active form and supports the antioxidant defenses around the thyroid. Some studies suggest selenium may help lower thyroid antibody levels for certain people, though results are mixed.

You can get selenium from food quite easily. Brazil nuts are famously rich in it, and just one or two a day can meet your needs. Other sources include seafood, eggs, and sunflower seeds. More is not better here, so there is no need to megadose.

Zinc and iron

Zinc and iron both play a role in thyroid hormone production, and low levels are common when energy is already low. Iron deficiency in particular can worsen fatigue, which may feel like a thyroid symptom even when it is something separate.

• Zinc sources: oysters, beef, pumpkin seeds, chickpeas, and cashews.

• Iron sources: lean red meat, poultry, lentils, tofu, and spinach paired with a vitamin-C food to help absorption.

If you suspect you are low, ask your doctor or dietitian about testing first. Too much of either mineral can cause its own problems.

Iodine — why more isn’t better

Iodine is essential for making thyroid hormone, but with Hashimoto’s it is a “just right” nutrient rather than a “more is better” one. Very high iodine intake, often from supplements or kelp products, may actually aggravate thyroid autoimmunity for some people.

In the United States, iodized salt and dairy mean most people already get enough. The National Institutes of Health Office of Dietary Supplements puts the recommended intake for adults at 150 micrograms per day, with higher needs during pregnancy. The takeaway is simple: aim for adequate, not extra, and skip high-dose iodine supplements unless your provider specifically recommends them.

Vitamin D and magnesium

Low vitamin D is common in people with autoimmune conditions, including Hashimoto’s, and it plays a role in immune regulation. It is hard to get enough from food alone. This is one nutrient worth testing, so you and your provider can decide whether a supplement makes sense.

Magnesium supports hundreds of processes in the body and may help with sleep, mood, and muscle comfort. You can find it in leafy greens, beans, nuts, seeds, and whole grains. For many people, building these foods into meals covers the basics without a pill.

How to build a thyroid-supportive plate

You do not need a rigid plan to eat well for your thyroid. The goal is a steady, anti-inflammatory pattern that delivers those key nutrients while fitting your real life. Small, repeatable habits tend to beat dramatic overhauls.

Anti-inflammatory, nutrient-dense foods to lean on

An anti-inflammatory plate is colorful, varied, and built mostly around whole foods. This is the pattern the International Journal of Molecular Sciences review connects to supporting thyroid health. Foods to lean on include:

• Colorful produce: berries, leafy greens, peppers, and squash for antioxidants and fiber.

• Quality proteins: fish, eggs, poultry, beans, and lentils to support energy and steady blood sugar.

• Healthy fats: olive oil, avocado, nuts, and seeds, which also carry selenium and zinc.

• Whole grains: oats, brown rice, and quinoa for magnesium and lasting fullness.

None of this is about perfection. Adding one more vegetable or swapping in a whole grain counts, and consistency matters more than any single meal.

“When a client tells me fatigue makes cooking feel impossible, I never start with elaborate recipes. We build a few no-cook, high-nutrient defaults instead, like Greek yogurt with pumpkin seeds and berries, canned salmon on whole-grain toast, or a couple of Brazil nuts with fruit. Getting selenium, zinc, and iron in through easy, repeatable meals beats a perfect plan you are too tired to make.” — Bridget Isaacs, MS, RD

A balanced day of eating (sample, not a rigid plan)

Here is one example of how those foods might come together in a day. Treat it as inspiration, not a prescription, and adjust portions and choices to your own preferences, budget, and needs.

• Breakfast: Greek yogurt with berries, a spoonful of pumpkin seeds, and a drizzle of honey.

• Lunch: Lentil and spinach soup with a slice of whole-grain bread and olive oil.

• Snack: An apple with a small handful of cashews, plus one or two Brazil nuts.

• Dinner: Baked salmon, roasted vegetables, and quinoa, finished with olive oil and lemon.

Notice there is nothing extreme here, and no food is off-limits. It is simply a rhythm of nutrient-dense meals that many people find sustainable.

What about gluten, soy, and goitrogens?

This is where the internet gets loudest, so let’s slow down. These foods often get labeled as things to avoid with Hashimoto’s, but the reality is more nuanced and more individual.

The gluten question

There is a real connection between Hashimoto’s and celiac disease, so screening for celiac is worth discussing with your doctor. If you have celiac disease or a diagnosed gluten sensitivity, a gluten-free diet is medically necessary.

For everyone else, the evidence is still limited. A 2019 pilot study in Experimental and Clinical Endocrinology & Diabetes is one example. In a small group of women with Hashimoto’s, a gluten-free diet was associated with modestly lower thyroid antibody levels. It is an interesting finding, not proof that everyone should cut gluten. For many people, going gluten-free is not necessary, and it can make eating harder without a clear payoff.

Goitrogens (broccoli, cauliflower, soy) — do you need to avoid them?

Goitrogens are compounds in foods like broccoli, cauliflower, cabbage, and soy that can, in very large amounts, interfere with thyroid function. In the portions most people actually eat, they are not a problem, and these vegetables bring fiber, antioxidants, and other benefits.

A few practical points:

• Cooking helps: Lightly cooking cruciferous vegetables reduces their goitrogen activity.

• Soy in normal amounts is generally fine for most people. If you take thyroid medication, separate soy foods from your dose by a few hours.

• Variety matters more than avoiding any single vegetable.

There is no need to fear broccoli. For the vast majority of people with Hashimoto’s, these foods belong on the plate.

Why elimination diets aren’t a first step for everyone

The Autoimmune Protocol (AIP) and other strict elimination diets get a lot of attention, and some people do feel better on them. But they are also demanding, socially isolating, and easy to get wrong on your own. Cutting out whole food groups can leave you short on the very nutrients your thyroid needs.

Elimination is a tool, not a starting line. If it is worth trying for you, it works best as a structured, temporary process guided by a dietitian. That plan includes a clear way to reintroduce foods. That is very different from cutting things indefinitely based on a social media post.

“When someone comes in convinced they have to cut gluten, dairy, and soy all at once, I ask them to pause. Removing three food groups at the same time tells you nothing about which one, if any, actually matters for you, and it usually adds stress and nutrient gaps. We change one thing at a time, track how you actually feel, and keep the foods that are working for you.” — Bridget Isaacs, MS, RD

Working with a registered dietitian to personalize your approach

By now you can probably see the theme: what helps depends on you. Your labs, symptoms, other health conditions, culture, budget, and schedule all shape what a supportive plan looks like. That is exactly the kind of nuance a registered dietitian is trained to handle.

A Registered Dietitian Nutritionist (RDN) is a licensed medical professional with years of clinical training, qualified to help manage conditions like thyroid disorders. A dietitian works alongside your doctor, not instead of them, and can help you translate research into meals that fit your week. You can learn more on our thyroid disorders care page or our holistic dietitian page.

At Berry Street, care is fully virtual and often covered by insurance. We are in-network with 1,250+ insurance plans nationwide, and 95% of our members pay $0 out of pocket. If you would like support built around your body and your life, you can match with a registered dietitian whenever you are ready.