How about iodizing salt?

Since 1993, China has stipulated that all salt must be iodized to prevent goiter (that is, big neck disease) and protect national health. So we have long felt that iodized salt is healthier.

However, recent research shows that excessive iodine intake has adverse effects on human body, such as hyperthyroidism and other diseases, and the differences in eating habits and food materials in different regions of China, "universal iodine supplementation" is not necessarily good. For example, in coastal areas, residents there often eat products with high iodine content in kelp and laver, and do not need to supplement iodine by eating salt. Therefore, in recent years, non-iodized salt or low-iodized salt has appeared in the market.

Therefore, the quality of iodized salt varies from region to region and from person to person, depending on your own needs.