The Effect of Smoking Cessation due to Cigarette Price Increase on Body Mass Index and Weight

Abstract

While smoking rate is declining worldwide, obesity rate has risen rapidly, and health economists have demonstrated a causal relationship between smoking and obesity. In Korea, however, there are few studies on smoking and obesity. Therefore, this study analyzed the effects of smoking cessation on body mass index and body weight using panel data from the Korea Health Panel Study for years 2013~2016. My empirical analysis, which applied the IV technique to the fixed-effects model to investigate the causal relationship between two variables, found that smoking cessation increased BMI by 1.30 and weight by 3.09kg. In particular, it was analyzed that the rapid increase in cigarette prices in 2015 lowered the smoking rate of the people but increased their weight and body mass index. Considering the socioeconomic cost of obesity as well as smoking, when strengthening the smoking cessation policy in the future, it is necessary to combine health policy and education to reduce the obesity rate so as not to cause adverse effects such as an increase in the obesity rate. Although this study is significant in that it is the first attempt to analyze the causal relationship between two variables using panel data, there is a need to present more meaningful implications through additional analysis in the future.