Back on track: smoking cessation and weight changes over nine years in a community-based cohort study

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Rasmus Køster-Rasmussen, Caroline Amalie Permin, Volkert Dirk Siersma, Jan Erik Henriksen, Berit Heitmann, Poul Erik Heldgaard, Niels de Fine Olivarius

Objective. To examine the impact of smoking cessation on body weight compared with normal long-termweight development.
Methods. Of 1970 adults (20–69 years) in a rural town in Denmark invited to take part in the study in 1998–2000, 1374 (70%) participated. After 9 years, 1121 participated in the follow-up study. Weight changes werecompared using multivariable regression models.
Results. The mean baseline weight of never-smokers was 76.4 kg (SD 16.0). The adjusted weight of smokersand ex-smokers differed by −4.2 kg (95% CI: −5.9, −2.6), and −0.7 kg (95% CI: −2.5, 1.1), respectively. Theadjusted weight gain rate (kg/year) of never-smokers, smokers, and ex-smokers was 0.213, 0.127, and 0.105,respectively. The absolute post cessation weight gain (PCWG) was 5.0 kg (SD 7.0), and the adjusted PCWGwas 2.8 kg (95% CI: 1.7, 3.9) compared with never-smokers, and 3.5 kg (95% CI: 2.3, 4.8) compared with smokers.The follow-up weight did not differ between quitters and never-smokers (0.1 kg; 95% CI: −2.4, 2.6).
Conclusion. Smokers weigh less than never-smokers. By quitting, they gain weight and end up weighing thesame as comparable never-smokers. Weight gain rates differ by smoking status. Consequently, PCWG dependson the length of follow-up. Our graphical model indicates that smoking cessation results in a return to normalweight development.
Original languageEnglish
JournalPreventive Medicine
Pages (from-to)320-325
Number of pages6
Publication statusPublished - Dec 2015

ID: 157350656