The origin of iodized salt, which salt is iodized

Chinese are generally deficient in iodine, which is potassium iodate.

In the past, many people had big neck disease (swollen thyroid line), and they didn't know what was going on, and they were very depressed.

Then, after investigation, it was found that people who regularly ate kelp were almost free from this disease. Later, when I studied kelp, I found that it also contained iodine in the belt, (later kelp became the main iodine **) It turned out to be iodine deficiency, in order to treat the symptoms, iodine was added to the salt that everyone eats every day, so there is now iodized salt.

Junior high school biology knowledge inference,Please judge for yourself.。 Hehe. /.

Iodized salt refers to edible salt with a certain proportion of potassium iodate added, and most of the salt with the word iodine on the market is iodized salt.

Before the 80s of the last century, the harm of iodine deficiency was limited to goiter and cretinism, and the prevention and control measures were to add iodized salt or iodized oil to the ward **. After the 80s of the last century, it was found that in the case that the iodine nutritional status of people has not reached the severity of the epidemic of endemic iodine deficiency diseases (the iodine content of children is 50-100 micrograms, and the prevalence of goiter is between 5-20%), children's intellectual development has been endangered, and only by supplementing with iodine can the normal brain development of infants and young children be ensured.

In this case, China revised the criteria for endemic iodine deficiency areas to be more than 5% of goiter among students aged 7-14 years. To address widespread iodine deficiencies, the World Health Organization (WHO) is calling for universal salt iodization. Since 1995, China has implemented universal salt iodization.

Ten years later, the goiter rate of students aged 7-14 in China has been reduced from an average to less than 5%, and the occurrence of cretinism has been completely eliminated in areas covered by qualified iodized salt, accounting for more than 90% of the population, and the average IQ of newborn children in areas with hidden iodine deficiency in the past has increased by about 11-12 IQ points.

Iodized salt refers to those that contain potassium iodate (KIO3) and sodium chloride (NaCl). The World Health Organization recommends a daily salt intake of 6 grams per person, but Chinese nationals generally exceed 20 grams. This requires the provision of non-iodized salt as a choice, otherwise the risk of excessive iodine intake is extremely high.

Iodized salt refers to table salt that contains sodium chloride of potassium iodate. Since most areas of China are deficient in iodine, and iodine deficiency will cause iodine deficiency diseases, the state compulsorily adds a small amount of iodized salt to the sodium chloride table salt for consumption.

The Chinese name is iodized salt.

Main raw materials. Sodium chloride, potassium iodate.

Main edible efficacy.

Prevents iodine deficiency.

Excessive intake is extremely dangerous.

The Liaoning region eats iodized salt.

The iodine content of edible salt is uniformly implemented throughout the country. The standard stipulates that the average iodine content of edible salt products is 20 mg kg to 30 mg kg, but health administrative departments across the country can choose the average iodine content of edible salt suitable for local conditions according to the actual iodine nutrition level of the local population.

The iodine content standard of edible salt formulated by the Liaoning Provincial Department of Health is: the iodized amount of edible salt for ordinary residents is 25 mg kg 30% (the allowable fluctuation range is 18-33 mg kg), and the iodized amount of salt for pregnant women is 30 mg kg 30% (the allowable fluctuation range is 21-39 mg kg). <

Misunderstanding. Edible iodized salt is prepared by adding potassium iodate or potassium iodide to table salt in a certain proportion (35 mg to 15 mg per kilogram of iodine). It contains trace amounts of iodine, and iodine is one of the essential trace elements of the human body, known as intellectual elements.

The amount of iodine in the human body is only about 30mg, half of which is in the thyroid gland and the rest is distributed in other tissues. Iodine is an important raw material for the synthesis of essential thyroid hormones, which affect the production, development and metabolism of the body, and the brain is its first target organ.

Iodine is the main raw material for the synthesis of thyroxine in the body, protecting the thyroid gland from iodine in radioactive fallout, iodine can be quickly absorbed by the human body, causing cancer and hereditary diseases, iodine has a half-life of 8 days, which is quite harmful to human health, it will accumulate on the thyroid gland and cause cancer. Timely ingestion of concentrated potassium iodide after a nuclear accident can reduce the amount of radiation generated by the thyroid gland and thus reduce the risk of cancer.

Therefore, the workers of the nuclear power plant only need to work, or are in the nuclear-contaminated area, take iodine tablets to reduce the risk of cancer.

Because iodine, as an important nutrient in the human body, plays an important role in maintaining the health of the body. When iodine deficiency occurs in the body, it can cause a series of serious physiological injuries to people of different ages, some of which can be fatal.

Iodine is found in nature and is mainly ingested by people from drinking water, food, vegetables, and the surrounding environment. However, there is little iodine in most parts of China, and the iodine ingestion from local drinking water, food, vegetables and the surrounding environment alone cannot meet the body's needs. So iodine from the salt.

1. Iodized salt has become a national policy, just like family planning. In fact, China should choose between two kinds of salt iodized or non-iodized salt. However, in many areas, there is only iodized salt, and even in the coastal area of Guangdong, there must be a lack of iodine in every place in China, and now there is more seafood, and there is basically no iodine deficiency in people's lives.

2. Safe and effective. The standard of iodine content in salt stipulated in China is not less than 40 mg per kilogram of iodized salt when processed and shipped, not less than 30 mg in the sales department, and not less than 20 mg in the user. Consumption of this iodized salt ensures the daily iodine requirement.

Prevention and control practice has proved that iodized salt is the safest and most effective in the prevention and treatment of iodine deficiency diseases.

3. Life-oriented and long-term. Due to the lack of iodine in the global environment, human beings need long-term and appropriate iodine supplementation. Human beings, regardless of race, ethnicity, age, and gender, must eat an appropriate amount of salt every day, so table salt is the best carrier for iodine supplementation.

By eating iodized salt, you can ensure the life, appropriate amount and durability of iodine supplementation.

4. Economical and easy to promote. The consumption of iodized salt is economical, and it only costs a small amount of money to solve the big problem of disease prevention, even for a very poor area or family. The above advantages determine that iodized salt is the best method among various iodine supplementation methods.

The main chemical components are sodium chloride and potassium iodate.

Iodized salt is prepared by adding potassium iodate to table salt in a certain proportion, that is, 20 mg of iodine per 2 kg of table salt.

Iodized salt refers to table salt that contains sodium chloride of potassium iodate. Since most parts of China are deficient in iodine, and iodine deficiency can cause iodine deficiency diseases, the World Health Organization recommends a daily salt intake of 6 grams per person, but Chinese nationals generally exceed 20 grams. This requires the provision of non-iodine-free salt as a choice, otherwise the risk of excessive iodine intake is very high.

Therefore, the National Chaos Bureau forced a small amount of iodized salt to be added to the sodium chloride table salt for consumption.