OBJECTIVES The association between smoking and obesity is a significant public health concern. Both are preventable risk factors of cardiovascular disease and a range of other conditions. However, despite numerous previous studies, no consensus has emerged regarding the effect of smoking on obesity. We therefore carried out a novel study evaluating the relationship between smoking and obesity.
METHODS
A total of 5,254 subjects aged 19 years or older drawn from the 2010-2013 Korea National Health and Nutrition Examination Survey were included in this cross-sectional study. Smoking was examined both in terms of smoking status and the quantity of cigarettes smoked by current smokers. Multiple logistic regression analysis was used to assess the association between smoking and obesity. Overall obesity was defined as a body mass index (BMI) ≥25 kg/m2, and central obesity was defined as a waist circumference ≥90 cm for males and ≥85 cm for females. We adjusted for the possible confounding effects of age, sex, physical activity, alcohol consumption, and the presence of hypertension or diabetes.
RESULTS
A statistically significant difference in central obesity according to smoking status was identified. Current smokers were more likely to be centrally obese than never-smokers (adjusted odds ratio,1.30; 95% confidence interval, 1.02 to 1.67). However, no significant association was found between smoking and obesity defined by BMI. Moreover, among current smokers, no statistically significant association was found between the daily amount of smoking and obesity or central obesity.
CONCLUSIONS
Smoking was positively associated with central obesity. Current smokers should be acquainted that they may be more prone to central obesity.
Summary
Korean summary
이 연구는 국민건강영양조사(2010-2013) 자료를 이용하여 한국 성인에서 흡연과 비만의 연관성을 분석하였다. 현재 흡연자는 비흡연자와 비교하여 비만의 위험도는 유의한 차이를 보이지 않았지만 복부비만의 위험도는 유의하게 증가하였다. 흡연이 복부 비만의 위험증가와 연관성이 있음을 확인하였으며 향후 인과관계 및 기전 규명을 위한 연구가 필요할 것으로 생각된다.
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