Hyperthyroidism is a group of common endocrine disorders caused by excessive secretion of thyroid hormones from various causes. It causes hyper-metabolism and sympathetic excitation, resulting in palpitations, sweating, increased eating and stool intake, and weight loss. In severe cases, hyperthyroidism may lead to critical phase, coma or even life threatening. Here are some of the hazards of hyperthyroidism. 1, affect the efficiency of labor and work Patients with hyperthyroidism have shortness of breath, insomnia and dreaminess, low labor and work efficiency, and even loss of labor ability. This can lead to eye protrusion, eyelids not closing tightly, double vision and other eye lesions, and in severe cases, blindness. 2. Affects social life Patients are irritable and irritable, and their voices are high and rough, and they often lose their temper and quarrel with others easily, which greatly affects their relationship with family members and others. 3. Damage to the motor system Most of the muscle symptoms of hyperthyroidism range from mild muscle weakness to severe muscle weakness and muscle atrophy, which may be accompanied by subtle tremor, active tendon reflexes and shortened reflex times. 4. Causes cardiovascular disease Because there are more T3 receptors on cardiac muscle cells, the cardiovascular system reacts strongly to excessive thyroid hormone, resulting in increased oxygen consumption and increased burden on the heart. The long-term effect of thyroid hormones on the heart can easily lead to cardiac hypertrophy, atrial fibrillation, arrhythmia and even death from heart failure. 5. Causes diabetes Thyroid hormone can antagonize the effect of insulin. In hyperthyroidism, the supraphysiological thyroid hormone content antagonizes insulin more strongly, and can promote intestinal glucose absorption and glycogen xenobiogenesis, thus causing an increase in blood sugar and leading to diabetes. Toxic diffuse goiter is an autoimmune disease in which the site of autoimmune lesions is not limited to the thyroid gland but also occurs in the renal tubules. Renal tubular lesions lead to dysfunction of the tubular acidification of urine, i.e., the acid cannot be excreted by the tubular secretion of urine and therefore accumulates in the blood and leads to acidosis. Hyperthyroidism causes liver damage due to increased oxygen consumption and insufficient oxygen supply to the liver, increased catabolism, increased liver glycogen depletion, and excessive consumption of various nutrients such as amino acids and vitamins. 8. Effects on fertility and sexual function In women with hyperthyroidism, many of them have menstrual disorders or even menopause, low libido and are less likely to conceive, while in men, hyperthyroidism can easily lead to loss of libido, impotence and premature ejaculation, resulting in infertility. 9. Causes other diseases Patients with poorly controlled hyperthyroidism will have a negative balance of protein and calcium and phosphorus metabolism, and will suffer from bone thinning. Patients complain of leg pain, lumbar pain, and compression fracture in lumbar spine, which can easily occur after a fall. Patients with poorly controlled hyperthyroidism for a long period of time will have their whole body organs affected, failing in function and suffering from systemic malnutrition, and will easily become infected. Under the effect of external factors (infection, fatigue, stress), hyperthyroidism will occur, manifesting as high fever, diarrhea, delusions and even coma, and the prognosis for those with heart failure, shock and jaundice is poor and the mortality rate is extremely high.