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. 2014 Aug 18;11(8):8443-55.
doi: 10.3390/ijerph110808443.

The joint influence of gender and amount of smoking on weight gain one year after smoking cessation

Isabella Locatelli  1 , Tinh-Hai Collet  2 , Carole Clair  3 , Nicolas Rodondi  4 , Jacques Cornuz  5
Affiliations

The joint influence of gender and amount of smoking on weight gain one year after smoking cessation

Isabella Locatelli et al. Int J Environ Res Public Health. .

Abstract

Weight gain is often associated with smoking cessation and may discourage smokers from quitting. This study estimated the weight gained one year after smoking cessation and examined the risk factors associated with weight gain in order to identify socio-demographic groups at higher risk of increased weight after quitting. We analyzed data from 750 adults in two randomized controlled studies that included smokers motivated to quit and found a gradient in weight gain according to the actual duration of abstinence during follow-up. Subjects who were abstinent for at least 40 weeks gained 4.6 kg (SD = 3.8) on average, compared to 1.2 kg (SD = 2.6) for those who were abstinent less than 20 weeks during the 1-year follow-up. Considering the duration of abstinence as an exposure variable, we found an age effect and a significant interaction between sex and the amount of smoking before quitting: younger subjects gained more weight than older subjects; among light smokers, men gained more weight on average than women one year after quitting, while the opposite was observed among heavy smokers. Young women smoking heavily at baseline had the highest risk of weight gain after quitting.

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Figures

Figure 1
Figure 1
Flow chart of participants from both randomized controlled trials.
Figure 2
Figure 2
Distribution of absolute weight gain (kg) at one year, by randomized clinical trial. Abbreviations: CAROSS, The Impact of CAROtid plaque Screening on Smoking cessation; PHASMO, PHysical Activity as an aid for SMOking cessation.
Figure 3
Figure 3
Mean absolute weight gain according to the multivariate model as a function of age, sex and number of cigarettes smoked at baseline. Overall duration of abstinence more than 40 weeks.
See this image and copyright information in PMC

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