The correct answer is D. In the years following iodine fortification, the rate of autoimmune thyroid disease went up 2600% (26 fold). In 1913 - 1914, the United States Army rejected many WWI draftees from the upper midwest due to goiter. Due to the large amount of fresh water in the Great Lakes, some regions had a lower soil iodine content, and the soils still needed to be fortified. The impoverished populations there relied almost exclusively on local grains for food. Their diets contained litt

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