Spanish researchers have confirmed that adding iodine supplements during pregnancy, and consuming iodized salt, can ensure iodine sufficiency during the critical development months of fetal development, according to a report in the October 18 issue of Thyroid.

The researchers found that iodized salt alone was insufficient to raise the average intake of expectant mothers in a region with borderline iodine deficiency to the recommended level of 150 micrograms/daily.