6 doctors weighed in:

What happens to iodine-131 in the body after it has been used to treat thyroid cancer?

6 doctors weighed in
Dr. Susan Wingo
Internal Medicine - Endocrinology
4 doctors agree

In brief: Same as plan iodine

You ingest iodine every day - in salt, salty foods, seafood, many breads, & red food coloring.
The thyroid absorbs what it needs; the rest is excreted into the urine (+ a little into sweat, saliva, and other secretions). The i-131 atoms that decay in the thyroid cells (and give off beta and gamma energy that kills thyroid cells) become nonradioactive xenon-131 atoms, and are breathed out.

In brief: Same as plan iodine

You ingest iodine every day - in salt, salty foods, seafood, many breads, & red food coloring.
The thyroid absorbs what it needs; the rest is excreted into the urine (+ a little into sweat, saliva, and other secretions). The i-131 atoms that decay in the thyroid cells (and give off beta and gamma energy that kills thyroid cells) become nonradioactive xenon-131 atoms, and are breathed out.
Dr. Susan Wingo
Dr. Susan Wingo
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Dr. Chakshu Gupta
Pathology

In brief: Passes out

Looses its radioactivity and is mostly passed out in the urine and saliva.

In brief: Passes out

Looses its radioactivity and is mostly passed out in the urine and saliva.
Dr. Chakshu Gupta
Dr. Chakshu Gupta
Thank
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