Thyroid cancer patients with papillary or follicular thyroid cancer often receive a dose of radioactive iodine (RAI) about two months after their surgery in an attempt to destroy (ablate) any remaining thyroid cells in their bodies. Most thyroid cancer patients also undergo whole-body radioiodine scans at periodic intervals, using a “tracer” dose of RAI. If their scan is not “clean”, they then receive treatment with a larger dose of RAI in an attempt to destroy any remaining thyroid cells in their bodies. In preparation for an RAI scan or an RAI treatment, patients are usually asked to go on a low-iodine diet.
The purpose of a low-iodine diet is to deplete the body of its natural stores of iodine to help make the radioactive iodine treatment more effective. The premise is that when the radioactive iodine is administered, the thyroid cells will “suck” up the iodine because it has been so depleted. This diet is for a short period. The usual time period is around two weeks or slightly more. The diet usually begins around two weeks before testing and continues through the testing and treatment period. However, recommendations for the time period can vary, depending partly on the individual patient’s circumstances.
Please follow the link http://www.thyca.org/ThyCa%20Cookbook%20011804.pdf
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