Iodine for Metabolism Boost

Typical dose

Recommended dose

150 mcg/day (RDA) if intake is low; prefer food sources (seaweed in moderation, dairy, fish).

Expected timeframe

6-12 weeks if deficient; no effect if replete

Protocol

form

Potassium iodide or iodate. Avoid kelp and seaweed supplements, whose iodine content is highly variable and often far above the upper limit

duration

Ongoing where dietary intake is inadequate

co factor

Take consistently. Be clear about the direction of the effect. Iodine is required for thyroid hormones T4 and T3, which set basal metabolic rate, so severe deficiency lowers metabolic rate and correcting it restores normal function - that much is certain. What does not follow is that extra iodine in a replete person raises metabolic rate above normal: thyroid hormone production is tightly autoregulated, and excess iodine does not increase output. It can instead cause thyroid dysfunction in either direction. The idea that iodine supplementation boosts metabolism for weight loss is a misreading of the deficiency physiology, and iodine supplements sold for that purpose frequently exceed safe intakes.

titration

No titration - this is a defined nutrient requirement

starting dose

150 mcg/day from a multivitamin, or adequate dietary iodine from iodised salt, dairy, eggs and seafood

What the studies say

Less likely to help if