Regarding whether thyroid cancer needs to be avoided, this question should include two time periods, that is, the recent period after thyroid cancer treatment and the long-term period after recovery. In the recent period after thyroid cancer surgery, the diet should be noted as follows: in addition to proper rest, the diet should be light and nutritionally balanced, avoiding or minimizing spicy and stimulating foods, such as onion, ginger, garlic, chili, cinnamon, including tobacco and alcohol. These are mainly to facilitate wound recovery or to reduce scar formation; a light and less oily diet can also avoid possible sudden increase or accumulation of celiac fluid in the neck for patients who have undergone larger surgeries. A small number of patients also need iodine 131 treatment after surgery. Before, during and after iodine 131 treatment, the dietary arrangement should be adjusted strictly according to the requirements of the nuclear medicine treating physician, who may ask to limit or stop the intake of iodine-containing foods, including iodized salt, and to consume less or no foods with high iodine content, such as seaweed, nori, shrimp skin and dried scallops. After thyroid cancer treatment is over and your body has fully recovered from the disease, there is no need to avoid food or salt, including the above-mentioned foods with high iodine content, and return to your original normal and healthy eating and living habits without any partial diet. Regular review as ordered by the doctor is sufficient. In the majority of cases, it can be said in four words: everything remains the same! Isn’t that simple? But there are many patients who, after thyroid cancer treatment (and also some other thyroid disease patients), start to pay close attention to the disease they are suffering from, so they don’t know what to eat and even have life anxiety, understandably. Often, through various ways and information to understand, it is natural to hear or see too many different or even opposite statements about what can and cannot be eaten, and there are many different opinions and confusion. For thyroid tumor was told: diet should be nutritionally balanced, eat lean meat, fish and other high protein, low fat, low salt, low sugar, high vitamin food, eat more fresh vegetables, fruits and seaweed, purple cabbage, beans, dairy products; eat less or no spicy stimulating greasy, barbecue, pickled and other foods. Avoid smoking and alcohol. Adhere to exercise to improve the ability to resist disease and enhance immune function. Take vitamin A, vitamin C, vitamin B6, vitamin E for a long time ……. Also have been told that many foods should not be eaten: do not consume too much iodine, should eat less iodine-rich foods such as seafood,fried, barbecued and other hot foods, chili, pepper, beef, mutton, carp, pickled foods, bacon, kelp, seafood spicy and stimulating foods. Avoid smoking and alcohol. The “avoid” and “desirable” foods are listed in a large list, so that people are dazzled. These are often based on the imagination of the people, traditional folk sayings. The “experts” are also not excluded to get online to rub the heat. Of course, these statements, even without tumors, are not wrong and are applicable as dietary advice that can be generally followed by all people for health care and healthy living. The fact is that many other malignancies, including thyroid cancer, are largely unrelated to a normal natural diet, at least at this point in time no association has been found between these and the recurrence of thyroid cancer. In the southeast and northwest of China, on the coast and inland, the dietary structure of light versus stimulating, iodine-rich versus iodine-poor varies greatly, but no epidemiological feature of high incidence of thyroid cancer in certain geographical areas has been found. Especially is it necessary to ban iodized salt, which is of more concern. In recent years, many people believe that iodized salt has increased the prevalence of thyroid disease in China. The results of a study on iodine nutrition and thyroid disease in China tell us that the significant increase in the prevalence of thyroid nodules is related to the increased opportunities for medical screening and the improved resolution of ultrasound; iodine deficiency predisposes to the development of thyroid nodules, while iodine excess and iodine overload are protective factors for thyroid nodules. Therefore, there is no problem to eat whatever salt is sold by the state. The basic amount of iodine that can be maintained by the standard of living of the population in most areas of China is 150-200ug/day. The recommendation given by the Domestic Nutrition Society is no more than 600 ug/day. Iodized salt contains about 20-50ug/g of iodine, and less than 6g of state iodized salt per day is close to the basic human needs. The WHO maximum tolerable intake of iodine for adults is 1100 micrograms/day, and the maximum intake is not a “toxic amount”, as kelp and seaweed contain very high amounts of iodine (240mg/kg), and a very small amount will exceed the requirement. The iodine content of fresh sea fish, shrimp and sea crab is about the same as that of land meat and poultry, about 100-600ug/kg, so they can be consumed in moderation without deliberate avoidance. In fact, the body itself for the daily intake of substances, according to the need to have a strong ability to regulate the trade-offs. Unless it is every day three meals every meal is seaweed, nori. There is no need to deliberately force yourself to prefer certain foods to achieve the desired cancer prevention and anti-cancer aspirations. After recovering from thyroid cancer treatment, you can follow your normal eating habits and life routine as usual, that is, as mentioned above: everything is as usual.