Will iodized salt cause excessive iodine intake?

In recent years, whether you should continue to consume iodized salt has been one of the most controversial topics.
Recently, some citizens reported to a reporter from the Beijing Morning News that they wanted to buy non-iodized salt because they were worried about health problems caused by excessive iodine intake.
It's hard to buy
.
A reporter from the Beijing Morning Post conducted an investigation and asked food and nutrition experts to make a professional interpretation of whether the public should be concerned about iodized salt or non-iodized salt
.
The market research market is still dominated by iodized salt, and non-iodized salt is rare.
According to the situation reported by the citizens, a reporter from the Beijing Morning Post visited Carrefour, Wumart, Hualian, and Supermarkets.
The scale of supermarkets covers different types of large, medium and small
.
Indeed, as reflected by the public, iodized salt is not easy to buy.
The reporter only found out whether there was iodized salt in two supermarkets
.
And compared to the many types of iodized salt covering sea salt, bamboo salt, well salt, rock salt, etc.
, there are fewer types of non-iodized salt, and the price is higher
.
In addition to offline supermarket channels, some larger online platforms have also experienced tight sales of non-iodized salt.
However, the few non-iodized salt products cannot be purchased due to "no stock in Beijing" and other reasons.

.
　　Voice of the citizens Some citizens are no longer willing to "accompany iodine supplementation".
A　　reporter survey found that the unwillingness to continue to eat iodized salt is not only a situation in individual citizens.
In recent years, some people no longer willing to "accompany iodine supplementation".
Voice, the reporter learned from the Internet that many netizens have reported that logistics is developing rapidly now, and everyone can easily eat seafood, and continue to use iodized salt if they often eat seafood.
They are very worried about excessive iodine intake; Netizens said that they live on the coast, and there is no need to supplement iodine through iodized salt; there are even many comments on the Internet that there is already a problem of excessive iodine supplementation in China, which is likely to cause diseases such as goiter in the human body
.
At the same time, the shortage of iodized salt in the market has also caused some people to panic.
Shouldn't they continue to eat iodized salt? 　　Experts explain that there is no evidence that excess iodine is related to thyroid tumors　　In response to the public’s confusion, Ruan Guangfeng, director of the business department of Kexin Food and Nutrition Information Exchange Center, said that the issue of whether to continue iodine supplementation first depends on whether the current iodine intake of Chinese residents is sufficient
.
The iodine intake recommended by the World Health Organization is 100-200ug/L, pregnant women should be greater than 200ug/L, the iodine intake recommended by the Chinese Nutrition Association is 90-120ug/L, and pregnant women greater than 120ug/L
.
The standards implemented in China are already lower than the standards recommended by the World Health Organization.
Therefore, residents generally do not exceed the iodine standard under normal diet
.
Regarding the relationship between iodine excess and thyroid gland, which people are generally concerned about, the World Health Organization has shown through a population case-control study that there is no scientific evidence that salt iodization or iodine excess is related to the occurrence of thyroid tumors
.
The overall iodine nutrition status in China is appropriate and safe.
The　　National Food Safety Risk Assessment Expert Committee released the "Risk Assessment of China's Salt Iodization and Resident Iodine Nutritional Status" report in 2010, which pointed out that the overall iodine nutrition status of residents in all regions of China is appropriate and appropriate.
At a safe level, the risk of health hazards caused by excessive iodine is very low, and there are still greater risks of iodine deficiency in some areas .
At the same time, the "Risk Assessment" report also covers the iodine intake issues of people in coastal areas that citizens are more concerned about .
The report data shows that "the proportion of adults with urinary iodine levels higher than 300ug/L in coastal areas is 11.
1% to 14.
2%, and the proportion of urinary iodine levels lower than 100ug/L is 23.
5% to 29.
0%, although the iodine intake of people in coastal areas The overall amount is appropriate and safe, but the proportion of low urine iodine levels is relatively high, especially for pregnant women.
The proportion of people with urine iodine levels below 150ug/L is 46%, indicating that pregnant women in coastal areas have a higher risk of iodine deficiency and need to be given Special attention" . 　　　　At the same time, Ruan Guangfeng also stated that in accordance with the requirements of the latest version of the Resident Dietary Guidelines in 2016, the daily salt intake of residents should be controlled within 6 grams.
According to the "Iodine Content of Edible Salt" standard published by the Ministry of Health in July 2010, table salt iodine fort The amount is 20-30mg/kg, which is equivalent to 30ug/L.
According to the daily intake of 6 grams of salt, deducting the loss of cooking and human metabolism, the intake of iodine will not be higher than the recommended amount of the World Health Organization
.
Experts suggest that " 　　Iodine deficiency is harmful and continue to consume iodized salt".
　　Regarding how residents should eat salt, Ruan Guangfeng emphasized that iodine is an essential trace element in the human body and plays an important role in promoting metabolism and promoting brain development .
Iodine deficiency can lead to many diseases such as goiter, especially for pregnant women and children, iodine deficiency is extremely harmful, which can easily lead to serious diseases such as miscarriage, fetal death, deformity, growth retardation, and impaired intellectual development .
Generally speaking, the harm of iodine deficiency is greater than the harm that may be caused by excessive iodine.
There is no doubt about the benefits of iodine supplementation.
The positive effect of iodization of table salt is also the main one.
It is not advisable to waste food due to choking .