Can you explain how radiation from iodine-131 could become concentrated in the human body and cause growth disorder?


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The human body requires trace amounts of iodine. Iodine is part of thyroxin, a hormone produced by the thyroid gland that controls the body's rate of physical and mental development. Iodine-131 is a major concern in any kind of radiation release from a nuclear accident because it is volatile and because it is highly radioactive, having an 8-day half-life.

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