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The body requires iodine, and as it cannot make it internally, the element must be absorbed from foods we consume. The thyroid uses iodine to synthesize hormones, too little of which can lead to an enlarged thyroid, infertility, autoimmune disease, and an increased risk of thyroid cancer. Iodine deficiency during pregnancy can result in reduced mental development in the baby. Balance is important when it comes to iodine, as too much is not healthy either. The recommended amount of iodine for the average adult is 150-220 micrograms per day.

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1. Dried Seaweed

Dried seaweed like nori or kelp is an excellent source of iodine. Just one serving of dried seaweed can contain about 2000% of the daily recommended intake (DRI) of iodine. Seaweed also contains a substantial amount of vitamin K, calcium, and iron -- all essential nutrients for building strong bones and staying energized. Because seaweed contains so much iodine, it should be eaten in moderation.

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