eCite Digital Repository

The association between quitting smoking and weight gain: a systemic review and meta-analysis of prospective cohort studies


Tian, J and Venn, A and Otahal, P and Gall, S, The association between quitting smoking and weight gain: a systemic review and meta-analysis of prospective cohort studies, Obesity Reviews, 16, (10) pp. 883-901. ISSN 1467-7881 (2015) [Refereed Article]

Copyright Statement

2015 World Obesity

DOI: doi:10.1111/obr.12304


This systematic review and meta-analysis aimed to quantify weight gain after smoking cessation and the difference in weight gain between quitters and continuing smokers. Five electronic databases were searched before January 2015. Population-based prospective cohort studies were included if they recorded the weight change of adult smokers from baseline (before smoking cessation) to follow-up (at least 3 months after cessation). Thirty-five cohort studies were identified, including 63,403 quitters and 388,432 continuing smokers. The mean weight gain was 4.10 kg (95% confidence interval [CI]: 2.69, 5.51) and body mass index (BMI) gain was 1.14 kg m−2 (95% CI: 0.50, 1.79) among quitters. Compared with continuing smoking, quitting smoking was significantly associated with absolute weight (adjusted mean difference [MD]: 2.61 kg; 95% CI: 1.61, 3.60) and BMI gain (adjusted MD: 0.63 kg m−2; 95% CI: 0.46, 0.80). Subgroup analyses using geographic region found that the difference in weight gain was considerably greater in studies from North America than from Asia. Follow-up length was identified as a source of heterogeneity, such that studies with longer follow-up showed greater difference in weight gain. Effective strategies are needed to encourage smokers to quit irrespective of potential weight gain and to help quitters avoid excess weight gain.

Item Details

Item Type:Refereed Article
Keywords:cohort studies, meta-analysis, smoking cessation, weight gain
Research Division:Health Sciences
Research Group:Epidemiology
Research Field:Epidemiology not elsewhere classified
Objective Division:Health
Objective Group:Clinical health
Objective Field:Clinical health not elsewhere classified
UTAS Author:Tian, J (Dr Jing Tian)
UTAS Author:Venn, A (Professor Alison Venn)
UTAS Author:Otahal, P (Mr Petr Otahal)
UTAS Author:Gall, S (Associate Professor Seana Gall)
ID Code:101875
Year Published:2015
Web of Science® Times Cited:95
Deposited By:Menzies Institute for Medical Research
Deposited On:2015-07-14
Last Modified:2017-11-04

Repository Staff Only: item control page