Nutrition and the thyroid

Thyroid health is closely connected to what you eat. The right nutrients can support the production and function of thyroid hormones, while deficiencies can lead to problems such as hypothyroidism. In this post, we cover the key nutrients essential for a healthy thyroid, how they work, and how to include them in your diet.

Iodine: the building block of thyroid hormones

Iodine is an essential mineral that forms the foundation of thyroid hormone production. Without sufficient iodine, the thyroid cannot produce enough hormones, which can lead to hypothyroidism.

Advice:

• Food sources: Seafood (such as sea vegetables and kelp), fish, eggs, dairy products, iodised salt, and poultry are rich in iodine.
• Tip: Use iodised salt as a seasoning and eat oily fish such as salmon twice a week to boost your iodine intake.

Tyrosine: the amino acid for thyroid hormones

Tyrosine is an amino acid that serves as a precursor to thyroid hormone production. It is essential for synthesising thyroxine (T4) and triiodothyronine (T3), the two main thyroid hormones.

Advice:

• Food sources: Turkey, chicken, fish, nuts, seeds, and dairy products are good sources of tyrosine.
• Tip: Add nuts as a snack and choose a lunch with chicken or turkey to increase your tyrosine intake.

Selenium: for converting T4 to T3

Selenium is an essential mineral that supports the conversion of T4 into T3, the active form of thyroid hormone. A selenium deficiency can disrupt this conversion and contribute to hypothyroidism.

Advice:

• Food sources: Brazil nuts, fish, shellfish, and eggs are rich in selenium.
• Tip: Eat a few Brazil nuts daily and include shellfish in your meals to boost your selenium intake.

Zinc: supporting thyroid hormones

Zinc is an essential trace element that plays a crucial role in the production and conversion of thyroid hormones. A zinc deficiency can lead to reduced thyroid function.

Advice:

• Food sources: Meat, shellfish, pumpkin seeds, and chickpeas are good sources of zinc.
• Tip: Add pumpkin seeds to your salad or eat chickpea hummus to keep your zinc levels up.

Vitamin B6: essential for hormone production

Vitamin B6 plays an important role in the production of thyroid hormones. A deficiency in this vitamin can lead to reduced thyroid function.

Advice:

• Food sources: Chicken, fish, potatoes, bananas, and spinach are rich in vitamin B6.
• Tip: Make a smoothie with banana and spinach, or add grilled chicken to your meal to increase your vitamin B6 intake.

Caution with soy if you take thyroid medication

Soy products can interfere with the absorption of thyroid hormones, particularly in people who already take thyroid medication.

Advice:

• Food sources: Tofu, soy milk, and edamame contain soy.
• Tip: Limit your consumption of soy products if you take thyroid medication to ensure it remains effective.

Conclusion

Nutrition plays a crucial role in thyroid health. By including foods rich in iodine, tyrosine, selenium, zinc, and vitamin B6 in your diet, you can support thyroid function and help prevent or improve an underactive thyroid. If you take thyroid medication, be mindful of soy intake to avoid unwanted interactions. Making conscious choices about thyroid-supportive foods is an important step toward a healthier and more balanced life.