Murcia M, et al. - In this present study, the clinicians evaluated the association between iodine status during pregnancy and the cognitive and motor development of children at 4–5 years. An association was found between low maternal urinary iodine and lower cognitive scores in childhood, although only when corrected for creatinine. This finding added to the evidence that iodine deficiency could have potentially harmful effects on the neurodevelopment. Iodine supplementation did not seem to improve child’s neurodevelopment at 4–5 years.