Smoking among morbidly obese patients

BMC Pulmonary Medicine

Research Article

Raquel Chatkin¹  José M Chatkin²  Claudio C Mottin³ 

[1] Nutritionist, Morbid Obesity Center at the Hospital São Lucas da Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Brazil;Professor, Post-Graduation Program in Medicine and Health Sciences, School of Medicine, PUCRS, Porto Alegre, Brazil;Professor, Post-Graduation Program in Medicine and Health Sciences, School of Medicine, PUCRS; Morbid Obesity Center at the Hospital São Lucas da PUCRS, Porto Alegre, Brazil;

关键词: Body Mass Index;    Smoking Status;    Morbid Obesity;    Obese Subject;    High Body Mass Index;   

DOI  :  10.1186/1471-2466-10-61

 received in 2010-04-30, accepted in 2010-11-24,  发布年份 2010

来源: Springer

【 摘 要 】

BackgroundSmokers usually have a lower Body Mass Index (BMI) when compared to non-smokers. Such a relationship, however, has not been fully studied in obese and morbidly obese patients. The objective of this study was to evaluate the relationship between smoking and BMI among obese and morbidly obese subjects.MethodsIn a case-control study design, 1022 individuals of both genders, 18-65 years of age, were recruited and grouped according to their smoking status (smokers, ex-smokers, and non-smokers) and nutritional state according to BMI (normal weight, overweight, obese, and morbidly obese).ResultsNo significant differences were detected in the four BMI groups with respect to smoking status. However, there was a trend towards a higher frequency of smokers among the overweight, obese, and morbidly obese subjects compared to normal weight individuals (p = 0.078). In a logistic regression, after adjusting for potential confounders, morbidly obese subjects had an adjusted OR of 2.25 (95% CI, 1.52-3.34; p < 0.001) to be a smoker when compared to normal weight individuals.DiscussionIn this sample, while the frequency of smokers diminished in normal weight subjects as the BMI increased, such a trend was reversed in overweight, obese, and morbidly obese patients. In the latter group, the prevalence of smokers was significantly higher compared to the other groups. A patient with morbid obesity had a 2-fold increased risk of becoming a smoker. We speculate that these finding could be a consequence of various overlapping risk behaviors because these patients also are generally less physically active and prefer a less healthy diet, in addition to having a greater alcohol intake in relation to their counterparts. The external validity of these findings must be confirmed.

【 授权许可】

CC BY   
© Chatkin et al; licensee BioMed Central Ltd. 2010. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.