Radioactive iodine is used to treat which condition?

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Multiple Choice

Radioactive iodine is used to treat which condition?

Explanation:
Radioactive iodine works because the thyroid gland avidly takes up iodine to make thyroid hormones. When the radioactive isotope is absorbed, it delivers targeted radiation to thyroid cells, destroying enough overactive tissue to lower hormone production and relieve hyperthyroid symptoms. It would not be used to treat hypothyroidism, since that condition already has too little thyroid activity and destroying more tissue would worsen it. While it can be used in some thyroid cancers after surgery to ablate residual tissue, the primary indication most tested is hyperthyroidism.

Radioactive iodine works because the thyroid gland avidly takes up iodine to make thyroid hormones. When the radioactive isotope is absorbed, it delivers targeted radiation to thyroid cells, destroying enough overactive tissue to lower hormone production and relieve hyperthyroid symptoms. It would not be used to treat hypothyroidism, since that condition already has too little thyroid activity and destroying more tissue would worsen it. While it can be used in some thyroid cancers after surgery to ablate residual tissue, the primary indication most tested is hyperthyroidism.

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