Selenium

Advanced wellness

also se

What it isSelenium is a trace mineral incorporated into selenoproteins, including glutathione peroxidase and the deiodinases that convert T4 to T3.

DoesPowers the body's master antioxidant glutathione system, drives thyroid hormone activation, and supports immune.

GoodMid-high selenium supports thyroid conversion, antioxidant defense, and immune resilience.

BadLow selenium impairs T4-to-T3 conversion, weakens antioxidant defense, and increases autoimmune thyroid risk. Excess causes selenosis — hair loss, brittle nails, neurological symptoms.

Standard

70–150 µg/L.

Optimal

120–150 µg/L (narrow target)

Modifiers

Soil content dictates food levels regionally; Brazil nut content varies enormously.

How to optimize

Lifestyle: —
Diet: Brazil nuts (1–2 per day), sardines, tuna, eggs, sunflower seeds; one Brazil nut covers daily needs.
Supplements: Selenomethionine (100–200µg/day); avoid combining with high Brazil nut intake (selenium toxicity risk).
Peptides: —
Drugs: —

within Minerals