Selenium vs Vitamin A
Evidence-based comparison of Selenium and Vitamin A — 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 | Vitamin A | |
|---|---|---|
| Category | Mineral | Vitamin |
| Mechanism | Thyroid support: Supports thyroid hormone production and conversion; Immune modulation: Regulates innate and adaptive im | Immune modulation: Regulates innate and adaptive immune responses |
| 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, high intakes of some forms of vitamin A can be harmful. Getting too much preformed vitamin A (usually from supplements or certain medicines) can |
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
Vitamin A may be better if: Immune modulation: Regulates innate and adaptive immune responses