Iodine nutrition and its assessment during pregnancy: a need for concern

Micro nutrient iodine was essential in biosynthesis of thyroid hormones (TH). These play a vital role the growth and development human beings at various stages life. TH are required for normal brain embryonic, fetal past natal stages. If deficiency occurs then hormone production impaired, if it can cause irreversible damage which leads to disorders like metal retarded ness, cretinism goiter known as (IDD). When compared adults, pregnant women school children 5-12 years age more vulnerable IDD. Due physiological variations during pregnancy requirements rose significantly from 150 µg/day non-pregnant adult 250 μg/day. However recent nutrition studies showed adequate status but few countries Sweden South Africa deficiency. This review gives an over view on global front.