Revista Española de Cardiología (English Edition) Revista Española de Cardiología (English Edition)
Rev Esp Cardiol. 2010;63:20-7 - Vol. 63 Num.01 DOI: 10.1016/S1885-5857(10)70005-0

Effect of Smoking on Body Weight: Longitudinal Analysis of the SUN Cohort

F. Javier Basterra-Gortari a, Lluís Forga b, Maira Bes-Rastrollo c, Estefanía Toledo d, J. Alfredo Martínez e, Miguel A. Martínez González f

a Departamento de Medicina Preventiva y Salud Pública, Universidad de Navarra, Clínica Universitaria, Pamplona. Navarra, Departamento de Endocrinología, Hospital de Navarra, Pamplona, Navarra, Spain
b Departamento de Endocrinología, Hospital de Navarra, Pamplona, Navarra, Spain. Departamento de Fisiología y Nutrición, Universidad de Navarra, Pamplona, Navarra, Spain
c Departamento de Medicina Preventiva y Salud Pública, Universidad de Navarra, Clínica Universitaria, Pamplona, Navarra, Spain
d Departamento de Medicina Preventiva y Salud Pública, Universidad de Navarra, Clínica Universitaria, Pamplona, Navarra, Spain. Departamento de Medicina Preventiva y Gestión de la Calidad, Hospital Virgen del Camino, Pamplona, Navarra, Spain
e Departamento de Fisiología y Nutrición, Universidad de Navarra, Pamplona, Navarra, Spain
f Departamento de Medicina Preventiva y Salud Pública, Universidad de Navarra, Clínica Universitaria. Pamplona, Navarra, Spain

Keywords

Epidemiology. Obesity. Smoking. Body mass index. Cohort.

Abstract

Introduction and objectives. Our aim was to investigate prospectively the association between two major cardiovascular risk factors: smoking and weight gain. Methods. We prospectively evaluated 7565 individuals taking part in a dynamic cohort study over a median follow-up period of 50 months. Self-reported weight and physical activity levels had been validated previously. The adjusted mean difference in weight gain relative to never-smokers (the reference group) was estimated for different levels of tobacco exposure. Results. After adjusting for age, baseline body mass index, sedentary lifestyle, changes in physical activity level, total energy intake, fiber intake, food consumption between meals, and sugary soft drink, fast food and alcohol consumption, it was found that individuals who stopped smoking during follow-up had a greater relative weight gain: men 1.63 kg (95% confidence interval [CI], 1.07-2.19 kg), and women 1.51 kg (95% CI, 1.11-1.91 kg). In addition, active smokers had a greater weight gain than never-smokers: men 0.49 kg (95% CI, 0.11-0.87 kg), and women 0.36 kg (95% CI, 0.07-0.65 kg). Conclusions. Individuals who stopped smoking during follow-up and active smokers both experienced significantly greater weight gains than never-smokers. This association between cardiovascular risk factors should be taken into account when developing prevention programs.

1885-5857/© 2010 Sociedad Española de Cardiología. Published by Elsevier España, S.L.U. All rights reserved

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