Symptoms of iodine deficiency include thyroid enlargement, goiter, nodules within goiter, and pregnancy related problems such as miscarriages, stillbirth, preterm delivery and congenital abnormalities in babies. Children of mothers with severe iodine deficiency during pregnancy can have mental retardation, problems with growth, hearing and speech, cretinism and low intelligence.
These effects are NOT caused by Endosulfan, but it is due to iodine deficiency.
Read more on the website of American Thyroid Association. http://www.thyroid.org/patients/patient_brochures/iodine_deficiency.html#symptoms