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KMID : 1170320140200030045
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Korean Journal of Health Economics and Policy
2014 Volume.20 No. 3 p.45 ~ p.64
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Secondhand Smoking and Obesity
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Kim Ji-Hoon
Chung Wan-Kyo
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Abstract
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Presently, there is a growing concern on smoking and obesity as global health risks. Both are responsible for worsening individual health, growing medical cost and productivity-decline related social cost. Recently, few research have paid attention on the inverse relationship between declining smoking rate and increasing obesity rate. This paper uses 2005 Korea National Health and Nutrition Examination Survey to study the relationship between secondhand smoking and obesity. Secondhand smoking is studied because it is important itself and less likely to be subject to endogeneity problem than smoking. The results show that secondhand smoking is positively related to obesity measured by BMI and waist circumference, contrary to the expectation that smoking helps to control weight. In addition, smoking regulation is introduced at working places in 2003 and its effect is found to have reduced secondhand smoking. Therefore, smoking regulation is shown to be effective in reducing not only smoking but also secondhand smoking. Driven by this effect of smoking regulation, this paper use smoking regulation as an IV for secondhand smoking and find statistically insignificant relationship between secondhand smoking and obesity. This result is robust to the selected sample analysis of people aged 64 and under to reduce selective bias due to the fact that the old are more likely to unhealthy and lean and (secondhand) smokers are more likely to die earlier.
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KEYWORD
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Secondhand Smoking, Obesity
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