Thyroid-Supporting
Brazil Nuts
Selenium is cofactor for deiodinase enzymes that convert T4 to active T3. Supports glutathione peroxidase (antioxidant). Single richest food source of selenium.
Mechanism of Action
Selenium is cofactor for deiodinase enzymes that convert T4 to active T3. Supports glutathione peroxidase (antioxidant). Single richest food source of selenium.
Active Compounds
Therapeutic Applications
Serving Size & Preparation
Recommended Serving Size
1-3 nuts daily (150-300mcg selenium)
Preparation Guidelines
Raw or lightly toasted. More than 3-4/day risks selenium toxicity. Buy fresh, store in fridge (high fat content)
Synergistic Combinations
These foods and compounds enhance the therapeutic effects of Brazil Nuts:
Additional Notes
Most selenium-rich food on planet - 68-91mcg per nut
Safety Information
Contraindications
Selenium toxicity (>400mcg daily), tree nut allergy, thyroid cancer (consult doctor)
Quick Facts
Evidence Level
Related Foods
Grass-Fed Liver
Vitamin A supports TSH receptor sensitivity. Extremely bioavailable iron. B vitamins cofactors for thyroid hormone synthesis. CoQ10 supports mitochondrial function.
Wild-Caught Fish
Selenium supports thyroid hormone metabolism. Omega-3s reduce thyroid-damaging inflammation. Vitamin D supports immune regulation in autoimmune thyroid disease.
Shellfish
Zinc required for TSH receptor function and T4→T3 conversion. Selenium cofactor for deiodinase. Iodine for hormone synthesis. B12 common deficiency in hypothyroidism.