May 15, 2021 is the 28th National Day for the Prevention and treatment of iodine deficiency Disorders (IDD) in China. This year's propaganda theme is "Scientific iodine supplementation, Live a healthy Life". It is emphasized that iodine deficiency in pregnant women can lead to fetal brain development retardation, mental retardation, and severe cases of cretinism, resulting in irreversible damage. Iodine deficiency in children and adolescents can lead to physical growth retardation, while iodine deficiency in adults can lead to hypothyroidism, distraction, fatigue and so on. Iodized salt is the most simple, safe and effective way to supplement iodine. In addition, iodine can be supplemented by eating iodine-rich foods such as kelp and porphyra. The theme of this year's publicity is to further enhance the scientific understanding of the prevention and treatment of IDD in the whole society by popularizing the knowledge related to the prevention and treatment of IDD and scientific supplement of iodine. The core information published on the website of the National Health Commission is mainly as follows: 1. Iodine is an essential micronutrient for human metabolism and growth. 2. Edible iodized salt is the most simple, safe and effective way to supplement iodine. 3. At present, there is no direct evidence that the consumption of iodized salt or increased iodine intake is related to the occurrence of thyroid cancer. (see http://www.nhc.gov.cn/jkj/s5873/202104/49c5ae2a5f534bd98ab628e54faa4b40.shtml for details).
The National Day for the Prevention and treatment of IDD was proposed at the "China 2000 Mobilization meeting on the Elimination of IDD 2000" held by the State Council in September 1993. It began on May 5, 1994 and was designated as the National IDD publicity Day. The purpose is to strengthen publicity and raise public awareness of the prevention and treatment of IDD. Due to the conflict with the May Day holiday, it has been changed to May 15 since 2000, and the propaganda theme for the new year will be announced by the national health authorities at the beginning of May every year. The posters are as follows: (see http://www.nhc.gov.cn/jkj/s5874/202104/a8a0eb954a4641e08cf718dd23438abe.shtml for details)