Why is the use of iodised salt advisable?

It important for us to have iodised salt in our diet because iodine is necessary for the thyroid gland to make thyroxine hormone. The deficiency of iodine leads to under-function of thyroid gland and deficiency of thyroxine hormone which further results in hypothyroidism and goitre (enlargement of thyroid gland). Iodine deficiency in early stage of development may lead to stunted physical and mental growth.