The thyroid gland is a small, butterfly-shaped organ located in front of the trachea. It is the largest endocrine gland in the human body and the main regulator of the body’s metabolism. It regulates the body’s metabolism and promotes growth and development, which is why the president of the International Thyroid Union, Yvonne Andersson, calls it “the engine of the human body”. Currently, more than 300 million people worldwide suffer from thyroid disorders, but 50% of them are unaware of the disease. Thyroid disease has become one of the most common diseases in endocrinology after diabetes. However, it has not been recognized as a serious problem. For this reason, the International Thyroid Union (ITRU) has launched the 4th International Thyroid Awareness Week from May 21st to 25th, 2012 to raise awareness about thyroid disease. The theme of the week is Thyroid Disease and Cardiovascular Risk. The aim of the week is to promote awareness of thyroid health and disease prevention among the general public, especially on thyroid disease and cardiovascular disease risk. Since the thyroid gland is closely related to the risk of cardiovascular disease, there is a saying that when the thyroid gland speaks, the heart listens. In short, we provide patients and the public with counseling and education on thyroid disease and cardiovascular disease, in order to recognize and prevent thyroid disease and reduce the risk of cardiovascular disease, and in particular, to provide proper guidance on screening, diagnosis, and timely treatment for high-risk groups. Why should we pay attention to the risk of thyroid disease and cardiovascular disease? “Thyroid disorders can be very harmful if they are not detected in time and treated correctly. For example, hyperthyroidism: it can lead to a significantly higher incidence of arrhythmia or heart failure, especially atrial fibrillation. Even in subclinical hyperthyroidism, there are structural and functional changes such as increased heart rate and left ventricular hypertrophy. Plus: hypothyroidism, if not treated in time, can lead to a slow heart rate or even cause the patient to fall into a coma, and it can also lead to numerous cardiovascular hazards such as increased blood pressure, increased blood cholesterol levels and atherosclerosis. The risk of coronary heart disease events is increased by up to 89% in hypothyroidism, and instantly the survival rate of patients with subclinical hypothyroidism heart disease is significantly reduced. Of even greater concern is the fact that thyroid disease, like diabetes, is growing as people’s standard of living improves. Because life is better every day, some people eat and drink raw seafood every day, causing iodine z into the excess. In the modern people have modern people’s happy more modern people’s anxiety and worry, such as work pressure, life pressure greatly increased, long-term mental tension, the pace of life is too fast, mental factors on the human body has a significant impact on the central nervous system in the control of human emotional activity in the part, but also to control the activities of the human body organs and endocrine gland area. There is also environmental pollution such as the Fukushima earthquake nuclear leakage, unhealthy lifestyle, these can lead to our body’s engine thyroid gland is not functioning well, resulting in the onset or aggravation of thyroid disease, especially hyperthyroidism. Such as I have encountered a senior female students suffering from hyperthyroidism, hyperthyroidism during the senior study period has always been poorly controlled, panic and hand tremors, after the completion of the college entrance examination, the drug has also reduced the amount of hyperthyroidism is also well controlled. Of course, not any one person in the nervous condition, will get hyperthyroidism, but if there is a genetic factor, once there is mental overstress, there is a high probability of hyperthyroidism. So I have to say: modern life and thyroid disease is also closely related. Here I would like to call for the promotion of a healthy lifestyle, reduce thyroid disease to take good care of your heart. In this beautiful red month of May, when the International Thyroid Activity Week is carried out, we endocrinologists should contribute our wisdom and strength, and should publicize more knowledge about thyroid diseases, so as to benefit the health of more thyroid patients and their families.