Iodine
Commonly used for
EnergyHealthy AgingThyroid Support
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What is it? / Overview
Wellness uses some people report: breast health and radiation protection. This is anecdotal, and there isn't strong clinical evidence that it works for everyone. Iodine is required for thyroid hormone production. Supplementation is appropriate when dietary intake is insufficient but excessive intake can also disrupt thyroid function.
How is it used? / Administration
Form: Potassium iodide
Typical dose studied: 150 mcg/day; 220–290 mcg/day during pregnancy per guidelines
Timing: With or without food
More iodine is not better. Most people in the US get adequate iodine from iodized salt and dairy.
How well does it work? / Evidence
✓ Well-established
Who should avoid it?
Avoid with: Hyperthyroidism / Graves disease; Hypothyroidism / Hashimoto's thyroiditis
Interacts with: Thyroid medications; Amiodarone
Already taking it? Avoid unnecessary high-dose iodine — excess can disrupt thyroid function.
Research & references
WHO Iodine Guidelines. American Thyroid Association guidance. NIH ODS Iodine Fact Sheet.
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