There are many different thyroid disorders, and not all patients with thyroid disorders need to be on a dietary regimen. For patients with hyperthyroidism, they should consume “non-iodized salt” and minimize the consumption of seafood and other foods with high iodine content. For patients with thyroid nodules, there is no need to deliberately avoid eating seafood or consuming “non-iodized salt” before the nature of the nodules is confirmed by pathology, and it is enough to pay attention to not consuming seafood and other iodine-containing foods in excess. For patients with thyroid adenomas, there is no clinical research or evidence-based medical evidence proving a direct link between thyroid adenomas and diet, so for these patients, there is no need to deliberately refrain from eating seafood and other foods with high iodine content, and there is no need to replace iodized salt with non-iodized salt at home. For these patients, there is no need to deliberately refrain from eating seafood and other foods with high iodine content, and there is no need to change from “iodized salt” to “non-iodized salt”. Especially for patients who have undergone surgical treatment, iodine deficiency may cause hypothyroidism, resulting in disruption of bodily functions.