Is Hashimoto's hypothyroidism due to iodine deficiency or excessive iodine?

Hashimoto's hypothyroidism may be caused by iodine deficiency, but excessive iodine cannot be ruled out either. The specific analysis is as follows:

Hashimoto's hypothyroidism is a commonly seen clinical condition with unclear etiology. It may be triggered by iodine deficiency. When patients lack iodine, insufficient iodine intake can lead to thyroid enlargement and subsequently result in hypothyroidism. On the other hand, excessive iodine in the body may trigger autoimmune thyroid diseases, potentially leading to Hashimoto's thyroiditis, which could worsen inflammatory responses and thus induce hypothyroidism. Therefore, both excessive and insufficient iodine intake may contribute to the development of Hashimoto's hypothyroidism.

Treatment for Hashimoto's hypothyroidism primarily involves supplementing thyroid hormones, such as levothyroxine sodium tablets or methimazole tablets. It is also important to adjust dietary habits and maintain a balanced iodine intake—avoiding both complete avoidance of iodine-containing foods and excessive consumption. Daily life should include maintaining a positive mindset, ensuring adequate sleep, avoiding excessive熬夜 (staying up late), quitting smoking and alcohol, and engaging in moderate physical exercise. Regular hospital follow-ups are necessary to monitor disease progression and recovery.