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Selenium

A trace mineral the thyroid needs to activate its hormones and protect itself. Some studies show it lowers thyroid antibodies in Hashimoto's.

Commonly used for

  • Thyroid support
  • Hashimoto's (thyroid antibodies)
  • Mild thyroid eye disease (with your eye doctor)

Found naturally in

  • Brazil nuts
  • Seafood
  • Eggs
  • Poultry

Label red flags

  • More than 200 mcg per serving
  • Selenium stacked across a multi, thyroid formula, and Brazil nuts

Check with a provider

  • Signs of too much: garlic-smelling breath, metallic taste, brittle hair or nails
  • Long-term high doses have been linked to a higher risk of type 2 diabetes

Related conditions

Hashimoto's thyroiditisGraves' disease

Supplements that contain it

Brand nameProduct nameThyroid support formulasComing soon
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Brand nameProduct nameThyroid support formulasComing soon
Brand nameProduct nameMultivitaminsComing soon
Brand nameProduct nameAntioxidant formulasComing soon

Parts of the body it affects

Explore what each area does and the conditions that can affect it.

Illustration of the thyroid gland in the front of the neck

Thyroid

This butterfly-shaped gland in your neck sets the pace of your metabolism. Autoimmune disease is the most common cause of thyroid problems.

Illustrations: Servier Medical Art, CC BY 4.0

Dr. Lesher, ND

Wondering if your symptoms fit a pattern?

Dr. Lesher is a naturopathic doctor who specializes in women's autoimmune and chronic conditions. Since 2020, she has helped more than 900 patients overcome and heal from their conditions.

Book a consult now