Essential for glutathione peroxidase and thyroid hormone conversion (T4→T3). 200μg/day reduced thyroid antibodies by 40% in Hashimoto's. Selenomethionine is best form. DO NOT exceed 400μg/day — toxic (selenosis causes hair/nail loss, GI issues). Brazil nuts: ONE nut = 70-90μg selenium. --- *Reviewed by the Dose AI Research Team and Clinical Advisory Board* *Last updated: 2026-04-06*
Reviewed by the Scan Dose Research Team and Clinical Advisory Board | Last updated:
Not medical advice. Based on published clinical research and systematic reviews.