Thyroid Support

Nutrients connected to Thyroid Support

A link means the body needs the nutrient for this, or that low intake is linked to it. It does not mean extra supplements help if your intake is already adequate; each link shows how strong the evidence is.

• IodineEstablished role

  Iodine is essential for normal thyroid function, but both too little and too much can cause problems, so ask a clinician before taking supplements or kelp.

• Irish moss (sea moss)Documented risk

  Sea moss is marketed for the thyroid, but its iodine can be excessive and unlabelled; there is no good evidence of thyroid benefit and excess can cause thyroid problems.

• Sea Moss (Eucheuma & Gracilaria)Documented risk

  The ATA says there is no known thyroid benefit of routine iodine above the RDA and warns about excess. This is not a thyroid support food.

• Iodized Table SaltDeficiency link

  Iodine is needed for thyroid hormones, and iodized salt programs prevent iodine deficiency. No source we read shows extra benefit when intake is already adequate.

• SeleniumEstablished role

  Selenium is needed to make thyroid hormones. In Hashimoto thyroiditis, trials found lower TSH and thyroid antibody levels, but these are lab markers, not symptoms.

• BugleweedPreliminary or mixed

  Used for mild overactive thyroid; evidence is small open studies and case reports of mostly L. europaeus products, so it is preliminary.

• KombuDocumented risk

  No source we read shows kombu supports the thyroid. Too much iodine can disturb it.

• Dashi (Kombu Stock)Documented risk

  We found no evidence dashi supports the thyroid, and a strong kombu stock may hold a lot of iodine.

• Daikon RadishDocumented risk

  Large crucifer intake with low iodine can affect the thyroid; not a thyroid treatment.

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