Iodized salt is a type of table salt that is fortified with iodine, an essential mineral that is necessary for the proper functioning of the thyroid gland. The idea of adding iodine to salt was first introduced in the early 20th century as a way to combat iodine deficiency, which is a leading cause of preventable mental retardation worldwide.

Today, iodized salt is widely available and is used in many countries as a means of ensuring that people get enough iodine in their diets. In addition to preventing mental retardation, iodine has also been shown to be important for the healthy development of fetuses and infants, as well as for maintaining proper metabolic function in adults.

China is one of the world’s leading producers of iodized salt, with an estimated annual production of over 5 million tons. China’s production advantage comes from its large reserves of salt and its well-developed salt industry, which includes advanced technologies for iodizing salt.

In terms of nutrition, iodized salt is a good source of iodine and can help prevent iodine deficiency. However, it is important to remember that salt should be consumed in moderation, as excessive salt intake has been linked to a number of health problems, including high blood pressure and cardiovascular disease.

In summary, iodized salt is an important product that helps to prevent iodine deficiency and promote proper thyroid function. China’s well-established salt industry has made it a leading producer of iodized salt, which is an important source of iodine for people around the world.