Iodized salt is a vital part of our diet as it is essential for the synthesis of

Iodine is a critical trace element required by the thyroid gland for the synthesis of thyroid hormones, specifically thyroxine (T4) and triiodothyronine (T3) [5]. These hormones are essential for regulating metabolism, growth, and neurological development [5]. Iodized salt is the primary dietary source used to prevent iodine deficiency, which can lead to disorders such as goitre (swelling of the thyroid gland), hypothyroidism, and cretinism [1]. While other hormones like insulin are produced by the pancreas to regulate blood sugar, and adrenaline is secreted by the adrenal glands for the 'fight or flight' response, they do not require iodine for their biosynthesis [4]. Therefore, iodized salt is specifically vital for the production of thyroxine to maintain hormonal balance and overall physiological homeostasis [5].

Sources

1. [1] Science , class X (NCERT 2025 ed.) > Chapter 6: Control and Coordination > Do You Know? > p. 110
2. [5] https://www.ncbi.nlm.nih.gov/books/NBK500006/
3. [2] Science , class X (NCERT 2025 ed.) > Chapter 6: Control and Coordination > QUESTIONS > p. 111
4. [3] Science , class X (NCERT 2025 ed.) > Chapter 6: Control and Coordination > 6.3 HORMONES IN ANIMALS > p. 109
5. [4] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 3: Health: The Ultimate Treasure > 3.4.2 How are non-communicable diseases caused? > p. 36