The Economic Effects of Micronutrient Deficiency: Evidence from Salt Iodization in the United States
AbstractIodine deficiency is the leading cause of preventable mental retardation in the world today. Iodine deficiency was common in the developed world until the introduction of iodized salt in the 1920’s. The incidence of iodine deficiency is connected to low iodine levels in the soil and water. We examine the impact of salt iodization in the US by taking advantage of this natural geographic variation. Areas with high pre-treatment levels of iodine deficiency provide a treatment group which we can compare to a control group of low iodine deficiency areas. In the US, salt was iodized over a very short period of time around 1924. We use previously unused data collected during WWI and WWII to compare outcomes of cohorts born before and after iodization, in localities that were naturally poor and rich in iodine. We find evidence of the beneficial effects of iodization on the cognitive abilities of the cohorts exposed to it.
Download InfoIf you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
Bibliographic InfoPaper provided by Edinburgh School of Economics, University of Edinburgh in its series ESE Discussion Papers with number 201.
Date of creation: 08 Feb 2011
Date of revision:
Other versions of this item:
- Feyrer, James & Politi, Dimitra & Weil, David N., 2010. "The Economic Effects of Micronutrient Deficiency: Evidence from Salt Iodization in the United States," SIRE Discussion Papers 2010-10, Scottish Institute for Research in Economics (SIRE).
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Jeffrey D. Sachs, 2003. "Institutions Don't Rule: Direct Effects of Geography on Per Capita Income," NBER Working Papers 9490, National Bureau of Economic Research, Inc.
- Bishai, David & Nalubola, Ritu, 2002. "The History of Food Fortification in the United States: Its Relevance for Current Fortification Efforts in Developing Countries," Economic Development and Cultural Change, University of Chicago Press, vol. 51(1), pages 37-53, October.
- Watson, Tara, 2006. "Public health investments and the infant mortality gap: Evidence from federal sanitation interventions on U.S. Indian reservations," Journal of Public Economics, Elsevier, vol. 90(8-9), pages 1537-1560, September.
- Hoyt Bleakley, 2007. "Disease and Development: Evidence from Hookworm Eradication in the American South," The Quarterly Journal of Economics, MIT Press, vol. 122(1), pages 73-117, 02.
- Politi, Dimitra, 2010.
"The Impact of Iodine Deficiency Eradication on Schooling: Evidence from the Introduction of Iodized Salt in Switzerland,"
SIRE Discussion Papers
2010-02, Scottish Institute for Research in Economics (SIRE).
- Dimitra Politi, 2011. "The Impact of Iodine Deficiency Eradication on Schooling: Evidence from the Introduction of Iodized Salt in Switzerland," ESE Discussion Papers 200, Edinburgh School of Economics, University of Edinburgh.
- Hoffmann, Vivian, 2009. "What You Donâ€™t Know Can Hurt You: Micronutrient Content and Fungal Contamination of Foods in Developing Countries," Agricultural and Resource Economics Review, Northeastern Agricultural and Resource Economics Association, vol. 38(2), October.
- Charles I. Jones & Peter J. Klenow, 2010.
"Beyond GDP? Welfare across Countries and Time,"
NBER Working Papers
16352, National Bureau of Economic Research, Inc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Gina Reddie).
If references are entirely missing, you can add them using this form.