Overweight and Poor? On the Relationship between Income and the Body Mass Index
Contrary to conventional wisdom, NHANES data indicate that the poor have never had a statistically significant higher prevalence of overweight status at any time in the last 35 years. Despite this empirical evidence, the view that the poor are less healthy in terms of excess accumulation of fat persists. This paper provides evidence that conventional wisdom is reflecting important differences in the relationship between income and the body mass index. The first finding is based on distribution-sensitive measures of overweight which indicates that the severity of overweight has been higher for the poor than the nonpoor throughout the last 35 years. The second finding is from a newly introduced estimator, unconditional quantile regression (UQR), which provides a measure of the income-gradient in BMI at different points on the unconditional BMI distribution. The UQR estimator indicates that the strongest relationship between income and BMI is observed at the tails of the distribution. There is a strong negative income gradient in BMI at the obesity threshold and some evidence of a positive gradient at the underweight threshold. Both of these UQR estimates imply that for those at the tails of the BMI distribution, increases in income are correlated with healthier BMI values.
|Date of creation:||Dec 2010|
|Date of revision:|
|Publication status:||published in: Economics and Human Biology, 2011, 9 (3), 342-355|
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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.:
- Darius Lakdawalla & Tomas Philipson, 2002.
"The Growth of Obesity and Technological Change: A Theoretical and Empirical Examination,"
NBER Working Papers
8946, National Bureau of Economic Research, Inc.
- Darius Lakdawalla & Tomas Philipson, 2002. "The Growth of Obesity and Technological Change: A Theoretical and Empirical Examination," Working Papers 0203, Harris School of Public Policy Studies, University of Chicago.
- Dean Jolliffe & Anastassia Semykina, 2000. "Robust standard errors for the Foster-Greer-Thorbecke class of poverty indices," Stata Technical Bulletin, StataCorp LP, vol. 9(51).
- Shapiro, Jesse & Glaeser, Edward & Cutler, David, 2003.
"Why Have Americans Become More Obese,"
2640583, Harvard University Department of Economics.
- David M. Cutler & Edward L. Glaeser & Jesse M. Shapiro, 2003. "Why Have Americans Become More Obese?," Harvard Institute of Economic Research Working Papers 1994, Harvard - Institute of Economic Research.
- David Cutler & Edward Glaeser & Jesse Shapiro, 2003. "Why Have Americans Become More Obese?," NBER Working Papers 9446, National Bureau of Economic Research, Inc.
- Dean Jolliffe, 2004. "Continuous and robust measures of the overweight epidemic: 1971–2000," Demography, Springer, vol. 41(2), pages 303-314, May.
- Patrinos, Harry Anthony & Sakellariou, Chris, 2004.
"Economic volatility and returns to education in Venezuela : 1992-2002,"
Policy Research Working Paper Series
3459, The World Bank.
- Harry Anthony Patrinos & Chris Sakellariou, 2006. "Economic volatility and returns to education in Venezuela: 1992-2002," Applied Economics, Taylor & Francis Journals, vol. 38(17), pages 1991-2005.
- Stifel, David C. & Averett, Susan L., 2009. "Childhood overweight in the United States: A quantile regression approach," Economics & Human Biology, Elsevier, vol. 7(3), pages 387-397, December.
- Darius Lakdawalla & Tomas Philipson & Jay Bhattacharya, 2005. "Welfare-Enhancing Technological Change and the Growth of Obesity," American Economic Review, American Economic Association, vol. 95(2), pages 253-257, May.
- Binh Nguyen & James Albrecht & Susan Vroman & Daniel Westbrook, 2003.
"A Quantile Regression Decomposition of Urban-Rural Inequality in Vietnam,"
gueconwpa~03-03-31, Georgetown University, Department of Economics.
- Nguyen, Binh T. & Albrecht, James W. & Vroman, Susan B. & Westbrook, M. Daniel, 2007. "A quantile regression decomposition of urban-rural inequality in Vietnam," Journal of Development Economics, Elsevier, vol. 83(2), pages 466-490, July.
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