Revisiting the Educational Effects of Fetal Iodine Deciency

Abstract

Recent research has reported positive effects on schooling due to in utero pro-tection from iodine deciency resulting from iodized oil capsule distribution inTanzania. We revisit the Tanzanian experience by investigating how these eectsdier over time and across surveys; across dierent treatment specications; andacross additional educational outcome measures. Contrary to previous studies, wend that the estimated effects tend to be small and not robust across specicationsor samples. Using all available data and a medically motivated iodine depletionfunction, we find no evidence of a positive long-run ffeect of iodine deficiency pro-tection on educational attainment.

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