And because historically most of the food consumed was locally grown, the inhabitants of iodine-poor regions tended to develop iodine deficiency, and goiters.

并且大部分食物都在本地自产自销，所以碘较少的地区就会出现碘缺乏和甲状腺肿大。

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The Chernobyl explosion spread radioactive iodine that was absorbed by cows and chickens and consumed by people in milk and eggs, says Linda Dahl, a head-and-neck specialist at The Lenox Hill Hospital in New York.

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