Home ยป Goitre: swelling of thyroid glands occurs due to the deficiency of Components of Food MCQs Goitre: swelling of thyroid glands occurs due to the deficiency of September 28, 2022 8 Views Q. Goitre: swelling of thyroid glands occurs due to the deficiency of _________. IodinePhosphorusIronPottasium Answer: Iodine