<prompt> Hypothyroidism in sub-himlayan region is due to deficiency ofIronIodineCopperSelenium  <response>: Answer is B Iodine: Hypothyroidism and Endemic Goitre in sub-himalayan region is primarily due to deficiency of iodine. Dietary iodine deficiency is widely prevalent in many pas of India, especially the sub-Himalayan region and is the principal cause of endemic goiter. Where the deficiency is severe, goiter, hypothyroidism and endemic cretinism is common-Pediatrics: A concise Test by kabra Elsevier 20072 The most common cause of neonatal hypothyroidism congenital hypothyroidism is thyroid gland dysgenesis 80-85. The most common of endemic goiterhypothyroidism is iodine deficiency. 