For patients with thyroid cysts, it is necessary to check their thyroid function to understand their condition. For patients with hyperthyroidism, it is advised to avoid iodine-rich foods, such as seaweed, kelp, and seafood. However, patients with thyroid cysts are suggested to eat more foods that can enhance the immune system, such as shiitake mushrooms, mushrooms, wood ear mushrooms, walnuts, Chinese yam, and red dates. They can also eat some foods that help reduce nodules and swelling, such as spinach, mustard greens, and kiwifruit. Patients with thyroid cysts are advised to quit smoking and drinking, and avoid spicy and stimulating foods, such as chili peppers, Sichuan peppercorns, and onions. Additionally, they should avoid eating overly greasy foods.