Iodine
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Iodine is a mineral required by the thyroid gland to produce thyroid hormones, which regulate metabolism throughout the body.
Why it’s used
Taken to meet daily iodine requirements, particularly relevant during pregnancy and in regions with iodine-poor soil and food supply.
What the evidence is for
preventing goiter and supporting fetal neurodevelopment in deficient populations.
What the evidence says
NIH ODS documents iodine deficiency as a well-established cause of goiter and, in pregnancy, of impaired fetal brain development; correcting deficiency addresses these outcomes. Evidence for iodine supplementation benefiting people who are not deficient is limited.
Dose studied
150–1100 mcg — adult RDA up to tolerable upper intake level, per NIH ODS.
Context
Adult intake recommendations are 150 mcg per day, rising during pregnancy and lactation, with a tolerable upper intake level of 1,100 mcg per day for adults.
Educational information, not medical or safety advice. Consult a professional for allergies or medical concerns.