Health Capital and the Prenatal Environment: The Effect of Maternal Fasting During Pregnancy

74 Pages Posted: 13 Jun 2008 Last revised: 23 Apr 2011

See all articles by Bhashkar Mazumder

Bhashkar Mazumder

Federal Reserve Bank of Chicago

Douglas Almond

Columbia University - Graduate School of Arts and Sciences, Department of Economics; National Bureau of Economic Research (NBER)

Multiple version iconThere are 2 versions of this paper

Date Written: April 20, 2011

Abstract

We use the Islamic holy month of Ramadan as a natural experiment in fasting and fetal health. In Michigan births 1989-2006, we find prenatal exposure to Ramadan among Arab mothers results in lower birthweight and reduced gestation length. Exposure to Ramadan in the first month of gestation is also associated with a sizable reduction in the number of male births. In Census data for Uganda, Iraq, and the US we find strong associations between in utero exposure to Ramadan and the likelihood of being disabled as an adult. Effects are particularly large for mental (or learning) disabilities. We also find significant effects on proxies for wealth, the sex composition of the adult population, and more suggestive evidence of effects on schooling and earnings. We find no evidence that negative selection in conceptions during Ramadan accounts for our findings, suggesting that avoiding Ramadan exposure during pregnancy is costly or the long-term effects of fasting unknown.

Keywords: Ramadan, fasting, prenatal, disability

JEL Classification: I1, J1

Suggested Citation

Mazumder, Bhashkar and Almond, Douglas Vincent, Health Capital and the Prenatal Environment: The Effect of Maternal Fasting During Pregnancy (April 20, 2011). FRB of Chicago Working Paper No. 2007-22. Available at SSRN: https://ssrn.com/abstract=1144209 or http://dx.doi.org/10.2139/ssrn.1144209

Bhashkar Mazumder (Contact Author)

Federal Reserve Bank of Chicago ( email )

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Douglas Vincent Almond

Columbia University - Graduate School of Arts and Sciences, Department of Economics ( email )

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National Bureau of Economic Research (NBER)

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