Goitre prevalence and the state of iodine nutrition in the sundarban delta of north 24-parganas in West Benegal.

The main objective of this study was to assess the iodine nutritional status among school children (6-12 yrs) of Sundarban delta in North 24-Parganas district of West Bengal in eastern India. A total of 2050 children were clinically examined for goiter and 240 urine samples were analyzed for iodine and thiocyanate respectively; iodine content in 48 water samples and 210 salt samples were also measured. Results indicate that the studied region is clinically severely goiter endemic having goiter prevalence 33.1 % (grade 1: 30.4 %; grade 2: 2.7%),median urinary iodine level 200 mug/l indicating no biochemical iodine deficiency, 65.2 % salt samples contain recommended level of iodine and the iodine content in drinking water is sufficient while mean urinary thiocyanate level was 0.708+/-0.38 mg/dl. In spite of the consumption of adequate iodine, the existing goiter prevalence may be for the consumption of dietary goitrogens/antithyroid substances that possibly come through food and water.