Can patients with Hashimoto's thyroiditis eat cold-natured foods?
Generally, patients with Hashimoto's thyroiditis are not advised to consume cold-natured foods. The detailed explanation is as follows:

The thyroid function of patients with Hashimoto's thyroiditis is already impaired. Consuming cold-natured foods may further stimulate the thyroid gland, potentially worsening the condition or triggering other uncomfortable symptoms, which is detrimental to recovery. Cold-natured foods include watermelon, ice cream, cold beverages, and raw or cold seafood. Although these foods may provide a cooling sensation during summer or in specific situations, they should be consumed cautiously by patients with Hashimoto's thyroiditis.
Patients with Hashimoto's thyroiditis should try to avoid or minimize the intake of cold-natured foods to prevent adverse effects on their condition. In daily diet, patients should focus on balanced nutrition, consuming more high-protein, low-fat, low-sugar, and high-vitamin foods, such as fish, lean meat, milk, eggs, various soy products, and fresh fruits and vegetables. To provide the necessary energy for the body, patients should maintain a habit of eating small meals frequently and avoid overeating.