In the daily clinical work, often hear about iodine thyroid disease problems, there are many vague or even wrong understanding, it is necess
In the daily clinical work, often hear about iodine thyroid disease problems, there are many vague or even wrong understanding, it is necessary to clarify.
Why does the body need iodine?
Iodine is an essential trace element in human body. Is an important endocrine organ in the body of the thyroid gland, located in the midline of the neck, a butterfly, the use of iodine and protein synthesis of thyroid hormones, and thyroid hormones can improve the body's metabolic activity, promote physical growth and brain development, maintain the normal physiological function of human body. The human body contains iodine is about 15 ~ 20mg, more than half of them exist in the thyroid gland, when a serious shortage of iodine intake, decreased in iodine reserves, the thyroid hormone synthesis reduced, causing metabolic deficiency, delayed growth and development.
Why iodine deficiency occurs?
Natural iodine is widely distributed in rocks, soil, water and air, but due to the erosion of rainwater, the surface of the soil water soluble iodine into the sea by rivers. Therefore, the iodine content of grain and vegetables and other crops grow on land less. The ocean is the nature of the iodine, high iodine content of seafood. The human body mainly rely on iodine dietary supplements, food products as a result of land in low iodine, if a single product is prone to eating land, iodine deficiency. According to the survey at the end of last century, there are about 425 million people living in iodine deficient areas in our country, accounting for 40% of the total population.
What are the hazards caused by iodine deficiency?
Iodine is a thyroid hormone synthesis of raw materials, iodine deficiency caused directly reduce the levels of thyroid hormones and thyroid hormone and endocrine hormone are essential for growth and development, physiological metabolism of the human body, the low level of serious harm to infants.
The brain has two key phases, one is the gestational age of 10 ~ 18 weeks, this is the proliferation and neuroblastoma cell development and differentiation, migration, formation of brain tissue during the development process of these neuroblastoma cells must be sufficient thyroid hormone action can be conducted; two is 3 months before birth to birth. After 2 years, the nerve cells begin to grow like a tree branches, then also need to actively participate in the thyroid hormone, can make the "branches" lush, these "branches" is the focal point of thinking activity after and information channel. If in the two critical period of iodine deficiency, will generally result in loss of 5 to 10 IQ, and even lead to big fool, mental damage is irreversible. In addition, the body organs are subject to iodine and thyroid hormone adjustment in the growth process, iodine deficiency can lead to bone age delay, low weight, short stature and other consequences.
How the scientific iodine?
Use of iodized salt for iodine is the most reasonable method, the best method is the lack of disease prevention and control of iodine. Salt iodization superiority mainly in 4 aspects:
1, everyone benefits. Residents living in iodine deficient areas, whether adults, children, or unborn babies, can benefit everyone.
2, preventable and treatable. Iodized salt can prevent and treatment for various damages caused by iodine deficiency.
3, safe and harmless. The amount of iodine added to salt can be controlled strictly, in the form of nutrients, not by the effective dose of the drug, without any medical risks.
4, convenient economy. From an economic point of view, a family of three, an increase of 1 to $2 per year expenditure, can be accepted.
In the process of eating, a little less than a large number of long-term storage; loaded with a lid of the porcelain jar or brown bottle, placed in a cool dry place; no salt explosion pot, dishes when the pot salt to avoid iodine volatilization at high temperatures.
How much is the supplement?
The minimum amount of iodine per day for healthy people is 75 g, and the appropriate supply is about a factor of 2.
The United Nations Children's Fund (UNICEF), WHO (WHO) and the International Council for control of iodine deficiency disorders (ICCIDD) supply jointly recommended daily iodine of different groups of different: 1 years old of less than 50 g, 2 ~ 6 years old, 90 g, 7 ~ 12 years old, 120 g, 12 years old and ****150 g pregnant and lactating women, 200 g.
China provides amount of iodine in salt factory is not less than 40mg per kg, to the residents of the kitchen is not less than 20mg per kg, according to this standard, the eclipse 5 ~ 10 grams of salt, salt iodine intake from about 100 to 200 mu G. Through salt iodization, China has in 2000 to achieve the goal of eliminating iodine deficiency disease stage, iodized salt coverage rate reached 93.8%, household iodized salt qualification rate reached 87.1%.
On the other hand, the scope of a wide range of people taking iodine, from a medical point of view, the daily intake of 1000 g iodine is safe.
What kind of people should not be iodine?
From a health perspective, people should not supplement the following:
1, high iodine areas or high iodine goiter in endemic areas, people in our country in high iodine areas on iodine uptake in 800 ~ 1000 g or more, without iodine, because of the long-term persistence of high iodine intake can cause high iodine goiter.
2, some patients with thyroid diseases, such as hyperthyroidism should not be iodine.
3, long-term living in severe iodine deficiency area population, should not be too fast or the risk of iodine, iodine or other related thyroid diseases.
From the http://csnm.medipromos.com/bbs/ShowPost.asp ThreadID=1008?