What is a common side effect of radioactive iodine treatment?

Radioactive iodine treatment, commonly used for conditions like hyperthyroidism and certain types of thyroid cancers, often leads to dry mouth or salivary gland dysfunction as a side effect. This occurs because the radioactive iodine can get absorbed by thyroid tissues along with the salivary glands, subsequently affecting their function. The result can be a decrease in saliva production, leading to discomfort, difficulty swallowing, or issues with oral hygiene.

While the treatment is effective for reducing thyroid hormone levels and managing thyroid conditions, the changes in salivary gland function can be significant for some patients. This side effect is particularly important to monitor and address, as it can impact daily activities and quality of life.