NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Imitative Obesity and Relative Utility

David G. Blanchflower, Andrew J. Oswald, Bert Van Landeghem

NBER Working Paper No. 14337*
Issued in September 2008
NBER Program(s):   HC    HE    LS

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If human beings care about their relative weight, a form of imitative obesity can emerge (in which people subconsciously keep up with the weight of the Joneses). Using Eurobarometer data on 29 countries, this paper provides cross-sectional evidence that overweight perceptions and dieting are influenced by a person's relative BMI, and longitudinal evidence from the German Socioeconomic Panel that well-being is influenced by relative BMI. Highly educated people see themselves as fatter -- at any given actual weight -- than those with low education. These results should be treated cautiously, and fixed-effects estimates are not always well-determined, but there are grounds to take seriously the possibility of socially contagious obesity.

*Published: David G. Blanchflower & Andrew J. Oswald & Bert Van Landeghem, 2009. "Imitative Obesity and Relative Utility," Journal of the European Economic Association, MIT Press, vol. 7(2-3), pages 528-538, 04-05.

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