« According to WHO, in 2007, nearly 2 billion individuals had insufficient iodine intake, a third being of school age. Iodine deficiency can have serious consequences, causing abnormal neuronal development, mental retardation, congenital abnormalities, spontaneous abortion and miscarriage, congenital hypothyroidism, and infertility. Later in life, intellectual impairment reduces employment prospects and productivity. »
http://www.thelancet.com/journals/lancet/article/PIIS0140673...