The use of iodised salt is advisable because it prevents iodine deficiency, which can cause goitre (swollen thyroid), poor growth, and reduced mental development, especially in children and during pregnancy.

Quick Scoop: Why iodised salt?

Think of iodised salt as everyday salt with an extra health shield added. Iodine is a trace mineral your body cannot make, but your thyroid gland absolutely needs it to work properly.

1. Supports thyroid hormone production

  • The thyroid uses iodine to make hormones like thyroxine (T4) and triiodothyronine (T3).
  • These hormones regulate metabolism of carbohydrates, proteins, and fats, help control body temperature, heart rate, and energy levels.
  • Without enough iodine, the thyroid enlarges (goitre) and can become underactive (hypothyroidism), causing fatigue, weight gain, and sluggishness.

2. Protects brain development and intelligence

  • Iodine deficiency in pregnancy and early childhood can lead to irreversible brain damage and lower IQ in children.
  • Studies show that introducing iodised salt in iodine‑deficient areas significantly improved average intelligence scores in the population.
  • In severe cases, lack of iodine can cause cretinism, a condition with serious mental and physical impairment.

3. Vital for pregnancy and growth

  • Pregnant and breastfeeding women need more iodine because it supports the baby’s brain and bone development.
  • Adequate iodine lowers the risk of miscarriages and problems linked to maternal hypothyroidism.
  • Using iodised salt is an easy, population‑wide way to ensure women and children get enough iodine without changing normal eating habits.

4. Simple public‑health solution

  • Iodine deficiency is one of the leading causes of preventable mental impairment worldwide.
  • Universal salt iodisation (adding iodine to common table salt) is a low‑cost strategy that has sharply reduced goitre and iodine‑deficiency disorders in many countries.
  • Because almost everyone uses some salt daily, fortifying salt reaches rich and poor households alike with minimal effort.

5. Extra reported health perks

  • Adequate iodine intake via iodised salt helps keep thyroid‑related regulation of blood pressure, heart rate, and body temperature stable.
  • Some reports suggest iodised salt helps counter harmful metals like mercury and lead and may reduce growth of certain harmful gut bacteria, though these effects are less central than its role in thyroid and brain health.

Mini classroom-style answer (for exams)

If you need a crisp, exam‑ready line:

The use of iodised salt is advisable because iodine is essential for the thyroid gland to produce thyroxine, which controls metabolism and supports normal growth and brain development; iodised salt helps prevent goitre and other iodine‑deficiency disorders.

Meta description (SEO‑style):
Why is the use of iodised salt advisable? Learn how iodised salt prevents goitre, supports thyroid function, protects brain development, and remains one of the most effective public‑health tools against iodine deficiency.

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