Iodized salt is safe for people to teach you the proper use of iodized salt(4)

Thyroid disease is caused by a variety of causes, in general, there are several reasons:

Iodine-derived factors: iodine is the synthesis of thyroid hormones important material, long-term iodine deficiency, so that the raw materials shortage of thyroid hormone synthesis, thus reducing the generation of thyroid hormone can cause goiter, hypothyroidism, etc.; The excessive intake of iodine can be caused by iodine-induced hyperthyroidism.

Autoimmune factors: hyperthyroidism most common. It is mainly from the auto-immune process and the mental excitement caused. Chronic lymphocytic thyroiditis, also known as Hashimoto's thyroiditis, it is an autoimmune disease, thyroid due to inflammatory damage, there may be hypothyroidism.

Metabolic factors: in puberty, pregnancy, lactation and menopause, the body's metabolism, thyroid hormone requirements increase, caused by prolonged, excessive secretion of thyroid stimulating hormone, can also promote goiter, this swelling is a biological phenomenon, often adult or after pregnancy, breast-feeding period on their own narrow.

Family genetic factors: a family of hereditary enzyme defect can cause thyroid hormone synthesis barriers, leading to goiter and hypothyroidism.

Iatrogenic factors: thyroid surgery, it will be total removal of the thyroid gland, or the removal of too much thyroid tissue, radioactive iodine 131 therapy, 131 excessive iodine used to make too much thyroid tissue damage, can cause hypothyroidism; some drugs can be inhibit thyroid hormone production, thus causing hypothyroidism, a common anti-thyroid drugs are drugs.

Radioactive materials: a large number of facts have proven, X ray exposure and thyroid cancer occur in the future a very close relationship, in particular, the impact on children, significantly more than adults.

Other factors: mental stress, infections, fatigue, trauma, pollution and the impact of thyroid disease.

Other parts of the disease: hypothalamic-pituitary disease due to lack of thyroid-stimulating hormone, so that thyroid function is generated to reduce the thyroid hormone.