Goitre is caused by deficiency of which element?
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✅ Correct Answer: C — Iodine
Goitre (Ghengha Rog) is caused by deficiency of Iodine. The thyroid gland needs iodine to produce thyroid hormones (T3 and T4). When iodine is insufficient, the thyroid gland enlarges (swells) to compensate, forming a visible swelling in the neck called Goitre.
❌ Why other options are wrong:
• A. Iron — Iron deficiency causes Anaemia (low haemoglobin), not Goitre.
• B. Calcium — Calcium deficiency causes Osteoporosis (weak bones) and Tetany (muscle cramps), not Goitre.
• D. Zinc — Zinc deficiency causes slow wound healing and impaired immunity, not Goitre.
📝 Important Note: Goitre is prevented by using Iodized salt. Iodine deficiency is the most common preventable cause of intellectual disability worldwide. India added iodine to common salt to eliminate iodine deficiency disorders (IDD). Commonly asked in SSC CGL General Science.
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