10 Thyroid Foods to Avoid In Your Diet for Wellness


10 Thyroid Foods to Avoid In Your Diet for Wellness

Diet plays a crucial role in managing your thyroid health. While some foods are beneficial, others can hinder its function and worsen symptoms.

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Several foods can interfere with the function of your thyroid gland and make hypothyroidism worse. It is important to be aware of these foods and avoid them as much as possible.

The thyroid is a butterfly-shaped gland located in your neck that produces hormones that regulate your metabolism, heart rate, and body temperature. When your thyroid gland doesn’t produce enough hormones, it can lead to a condition called hypothyroidism. Hypothyroidism can cause a variety of symptoms, including fatigue, weight gain, constipation, and dry skin.

Here are 10 thyroid foods to avoid for optimal wellness

1. Soy and Soy Products

Soy is rich in goitrogens, which are substances that can interfere with iodine uptake by the thyroid gland. Iodine is essential for the production of thyroid hormones. Therefore, consuming excessive soy can lead to hypothyroidism or worsen its symptoms. Examples of soy-based products to avoid include:

  • Tofu
  • Tempeh
  • Edamame
  • Soy milk
  • Soy sauce
  • Miso

2. Cruciferous Vegetables

Cruciferous vegetables are a group of vegetables that include broccoli, cabbage, cauliflower, Brussels sprouts, kale, and turnips. These vegetables contain goitrogens, which can interfere with thyroid function in individuals with iodine deficiency or compromised thyroid function. However, cooking these vegetables can significantly reduce their goitrogenic effect, allowing for moderate consumption.

3. Gluten

For individuals with gluten sensitivity or celiac disease, gluten found in wheat, barley, and rye can trigger digestive issues and worsen hypothyroidism symptoms. Gluten can damage the small intestine, leading to nutrient malabsorption, including iodine, which is crucial for thyroid hormone production. Additionally, gluten can trigger autoimmune reactions, potentially impacting the thyroid gland directly.

4. Fatty Foods

Fatty foods can interfere with the absorption of thyroid medication. High-fat meals can delay the absorption of medication into the bloodstream, reducing its effectiveness. It is recommended to maintain a gap of at least four hours between taking thyroid medication and consuming fatty meals. Examples of fatty foods to limit include:

  • Fried foods
  • Fatty meats (red meat, bacon, sausage)
  • Dairy products (full-fat milk, cheese, butter)
  • Processed meats

5. Sugary Foods

Sugary foods can cause blood sugar spikes and crashes, exacerbating fatigue and other hypothyroidism symptoms. Additionally, excessive sugar intake can lead to weight gain, which can further impact thyroid function. Opt for natural sweeteners like honey or maple syrup in moderation, and limit your intake of processed foods and sugary drinks.

6. Processed Foods

Processed foods are often laden with unhealthy fats, sugars, and sodium, contributing to weight gain and other health issues, further impacting your thyroid health. Prioritize whole, unprocessed foods like fruits, vegetables, whole grains, and lean protein to ensure optimal nutrition and support thyroid function.

7. Alcohol

Similar to fatty foods, alcohol can hinder the absorption of thyroid medication, reducing its effectiveness. Moreover, alcohol can worsen fatigue and depression, common symptoms of hypothyroidism. Consider limiting alcohol intake or opting for non-alcoholic alternatives.

8. Coffee

While a morning ritual for many, coffee can interfere with the absorption of thyroid medication. Additionally, caffeine can disrupt sleep, exacerbating hypothyroidism symptoms. Consider limiting intake, switching to decaf alternatives, or drinking coffee several hours after taking your medication.

9. Green Tea

Although containing goitrogens, the amount in green tea is minimal and unlikely to impact thyroid function in healthy individuals. If you enjoy its health benefits, moderate consumption is acceptable.

10. Certain Medications

Some medications, both prescribed and over-the-counter, can interfere with thyroid function. Some examples include:

  • Lithium
  • Amiodarone
  • Interferon
  • Interleukin-2
  • Tyrosine kinase inhibitors

It is important to discuss your medications with your doctor to understand potential interactions and explore alternative medications if necessary.


  • A balanced diet and healthy lifestyle are crucial for managing hypothyroidism.
  • Ensure adequate iodine intake through dietary sources like seafood, seaweed, iodized salt, and dairy products.
  • Include enough selenium in your diet through foods like Brazil nuts, seafood, and organ meats.
  • Consume sufficient vitamins and minerals, particularly vitamins A, B, C, D, and E, as well as zinc and iron.
  • Stay hydrated by drinking plenty of water throughout the day.
  • Consult your doctor regularly to monitor your thyroid function and discuss any concerns you have about your diet or medication.

By following these tips and working with your doctor, you can effectively manage your hypothyroidism and enjoy optimal health. Remember, a balanced diet and healthy lifestyle are key to supporting your thyroid function and feeling your best.


1. What are goitrogens and how do they affect the thyroid?

Goitrogens are natural substances found in some foods that can interfere with the production of thyroid hormones. They do this by blocking the absorption of iodine, an essential nutrient for thyroid function.

2. Do I need to completely avoid all foods that contain goitrogens?

No, not necessarily. The amount of goitrogens in most foods is relatively low and unlikely to have a significant impact on thyroid function in healthy individuals. However, individuals with hypothyroidism or iodine deficiency may be more sensitive to the effects of goitrogens and may need to limit their intake.

3. How can I cook cruciferous vegetables to reduce their goitrogenic effect?

Cooking cruciferous vegetables, such as broccoli, cabbage, and cauliflower, can significantly reduce their goitrogenic content. Boiling, steaming, and stir-frying are all effective methods.

4. What are some healthy alternatives to soy products?

For individuals who need to limit their intake of soy, there are several healthy alternatives available. These include:

  • Lentils
  • Beans
  • Nuts and seeds
  • Tofu made from other legumes, such as chickpeas or mung beans
  • Tempeh made from other legumes

5. What are some healthy alternatives to gluten-containing foods?

There are many delicious and nutritious gluten-free alternatives available. These include:

  • Rice
  • Quinoa
  • Oats (certified gluten-free)
  • Gluten-free bread and pasta made from alternative flours, such as almond flour, coconut flour, or oat flour
  • Gluten-free grains, such as amaranth, millet, and sorghum

6. What should I do if I am taking thyroid medication and I want to drink coffee?

If you take thyroid medication and enjoy coffee, it is best to wait at least four hours before drinking coffee after taking your medication. This will help ensure that the medication is absorbed properly into your bloodstream.

7. Can I still drink green tea if I have hypothyroidism?

Yes, you can still drink green tea in moderation if you have hypothyroidism. The amount of goitrogens in green tea is minimal and unlikely to impact thyroid function in most individuals.

8. What should I do if I am concerned about a medication interacting with my thyroid medication?

It is important to discuss all of your medications, both prescription and over-the-counter, with your doctor. This will help them identify any potential interactions with your thyroid medication and recommend alternative medications if necessary.

10. Should I consult with a doctor before making changes to my diet?

It is always a good idea to talk to your doctor before making any significant changes to your diet, especially if you have a health condition like hypothyroidism. They can help you create a personalized plan that meets your individual needs.

Additional resources

  • The American Thyroid Association: https://www.thyroid.org/
  • The National Institute of Diabetes and Digestive and Kidney Diseases: https://www.niddk.nih.gov/
  • The Mayo Clinic: https://www.mayoclinic.org/diseases-conditions/hypothyroidism/symptoms-causes/syc-20350284

Note: This article is written based on scientific evidence found by the soundhealthandlastingwealth.com team. Sources are duly referenced and hyperlinked to source websites and are clickable for confirmation.