The incidence of thyroid disease is particularly high, many people ask why this disease, can only say that now the reason is not very clear, but through the long-term observation of patients with thyroid disease around, summarized in the following points: First, the intake of iodine-containing foods, there are a lot of large-scale studies have found that iodine intake of too much of the population of the incidence of thyroid disease is significantly higher, the iodine intake of too little is also significantly higher, the iodine The relationship between iodine intake and the incidence of thyroid disease is basically a U-shaped curve. That is, when the iodine intake is appropriate, the incidence of thyroid disease is the lowest, but this is only a large-scale population survey found that whether it is suitable for individuals is still to be disputed, but usually on the iodine-containing food is mainly kelp products, can not a little bit of not eat also can not eat too much. Second, the mood and lifestyle issues, many patients with thyroid disease are usually stressed, easy to lose their temper, irritability or long-term repression is easy to get. So try to engage in their own industry, relax, maintain a regular life, do not stay up late, to minimize the occurrence of thyroid disease. But can do the above two points may not necessarily be able to prevent, because the thyroid disease also has a genetic predisposition, that is to say, the family has a blood relationship with the person has thyroid disease, his children have a very high probability of occurring hyperthyroidism disease, there is no way to prevent this.