World Iodine Deficiency Day
World Iodine Deficiency Day 2026 and India’s NIDDCP: World Iodine Deficiency Disorders Prevention Day is observed on 21 October to raise awareness about iodine deficiency, thyroid health and preventive measures. Iodine is an essential micronutrient required for producing thyroid hormones, which regulate metabolism, body temperature, growth and brain development.
Static GK fact: The thyroid gland produces two principal hormones, thyroxine (T4) and triiodothyronine (T3). Both contain iodine and play important roles in normal growth and development.
Causes and Health Effects of Iodine Deficiency
Iodine deficiency occurs when the body does not receive sufficient iodine to produce adequate thyroid hormones. It may result from consuming inadequately iodised salt, limited access to iodine-rich foods or increased nutritional requirements during pregnancy and lactation.
Major consequences include goitre, an enlargement of the thyroid gland, and hypothyroidism, in which the thyroid produces insufficient hormones. Severe deficiency during pregnancy and early childhood can impair brain development, learning ability and physical growth.
Seafood, dairy products, eggs and iodised salt are among the dietary sources of iodine. However, excessive iodine intake can also affect thyroid function, making balanced consumption important.
National Iodine Deficiency Disorders Control Programme
India launched the National Goitre Control Programme (NGCP) in 1962 to address iodine deficiency. In August 1992, it was renamed the National Iodine Deficiency Disorders Control Programme (NIDDCP) to cover a wider range of disorders caused by iodine deficiency.
The programme operates under the Ministry of Health and Family Welfare, through the Directorate General of Health Services (DGHS). Its activities include monitoring the quality of iodised salt, conducting surveys and laboratory testing, and promoting public awareness.
Static GK fact: NIDDCP reflects a shift from focusing primarily on goitre to addressing the broader health consequences of iodine deficiency.
India’s Progress in Iodised Salt Consumption
According to National Family Health Survey-5 (NFHS-5), conducted during 2019–21, 94.3% of Indian households used adequately iodised salt. This represented an improvement over the 76% reported in NFHS-2 (1998–99).
The programme monitors iodised salt at different stages, including production, distribution and household use. State and Union Territory administrations contribute through surveys, testing and awareness campaigns.
Static GK Tip: NFHS is a major nationwide survey that provides data on population health, nutrition and family welfare in India.
Prevention of Iodine Deficiency
The use of adequately iodised salt is a key public-health measure for preventing iodine deficiency. The World Health Organization (WHO) recognises salt iodisation as an effective strategy for improving iodine intake across populations.
Other preventive measures include consuming a balanced diet, storing iodised salt in a dry and covered container, and following professional medical advice on iodine requirements during pregnancy and lactation. Supplements should be taken only when medically recommended, since excess iodine may also cause thyroid problems.
Static Usthadian Current Affairs Table
World Iodine Deficiency Day 2026 and India’s NIDDCP:
| Fact | Detail |
| Observance | 21 October |
| Earlier Indian programme | National Goitre Control Programme |
| NGCP launch year | 1962 |
| NIDDCP renamed | August 1992 |
| Nodal ministry | Ministry of Health and Family Welfare |
| Key thyroid hormones | T4 and T3 |
| NFHS-5 period | 2019–21 |
| Households using adequately iodised salt | 94.3% |
| NFHS-2 figure | 76% in 1998–99 |
| Main prevention strategy | Adequate salt iodisation |
