What is the adult Iodine RDA compared to iodine levels found in some kelp powders?
Answer
RDA is 150 micrograms (mcg); some kelp powder exceeds 1,000 mcg in a small dose.
The recommended daily allowance (RDA) for iodine for the majority of adults is established at approximately 150 micrograms ($\mu g$). Kelp, however, is known for its remarkably high concentration of this mineral. Depending on factors like species and location, a single serving of kelp can frequently surpass the baseline requirement by hundreds or even thousands of percent. Specifically, certain varieties of kelp powder have been noted to deliver well over $1,000 \mu g$ in just a small measured dose, illustrating the dramatic potential for overload relative to the daily recommended intake.
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