Selenium vs Iodine
Evidence-based comparison of Selenium and Iodine — absorption, dosage, safety, and which is best for your needs.
Selenium
Thyroid support: Supports thyroid hormone production and conversion; Immune modulation: Regulates innate and adaptive im
Full GuideDetailed Comparison
| Selenium | Iodine | |
|---|---|---|
| Category | Mineral | Mineral |
| Mechanism | Thyroid support: Supports thyroid hormone production and conversion; Immune modulation: Regulates innate and adaptive im | Thyroid support: Supports thyroid hormone production and conversion |
| Safety | Yes, if you get too much selenium over time. Brazil nuts, for example, contain very high amounts of selenium (68–91 mcg per nut) and can cause you t | Yes, if you get too much. Getting high levels of iodine can cause some of the same symptoms as iodine deficiency, including goiter (an enlarged thyroi |
Which Should You Choose?
Selenium may be better if: Thyroid support: Supports thyroid hormone production and conversion; Immune modulation: Regulates innate and adaptive immune responses; Antioxidant ac
Iodine may be better if: Thyroid support: Supports thyroid hormone production and conversion