Can patients with Hashimoto's thyroiditis consume iodine?

Hashimoto's thyroiditis, also known as chronic lymphocytic thyroiditis, generally allows for iodine consumption when thyroid function is normal. However, if a patient develops hyperthyroidism, iodine intake is typically not recommended.

During the early stages of Hashimoto's thyroiditis or when thyroid function is normal, moderate iodine intake is safe and may even be beneficial. Iodine is an essential component for the synthesis of thyroid hormones and helps maintain normal thyroid function. At this stage, iodine can be supplemented through iodine-rich foods such as kelp, nori, and shrimp skins, but excessive intake should be avoided. If patients do not reside in areas with high iodine content in the water supply, their daily dietary iodine levels are relatively low, and moderate consumption of iodine-containing foods may help maintain normal thyroid function.

Patients with Hashimoto's thyroiditis who develop hyperthyroidism should strictly avoid consuming iodine-containing foods. During this period, iodine intake may exacerbate thyrotoxicosis by increasing thyroid hormone synthesis, thereby worsening the condition. Excessive iodine intake may intensify hyperthyroid symptoms such as palpitations, hand tremors, and weight loss. High-iodine foods should be avoided, and consumption of seafood and iodized salt should be reduced.

In daily life, patients should regularly undergo thyroid function tests and thyroid ultrasound examinations to monitor disease progression and adjust treatment plans accordingly.