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Back on track-Smoking cessation and weight changes over 9years in a community-based cohort study

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OBJECTIVE: To examine the impact of smoking cessation on body weight compared with normal long-term weight development.

METHODS: Of 1970 adults (20-69years) in a rural town in Denmark invited to take part in the study in 1998-2000, 1374 (70%) participated. After 9years, 1121 participated in the follow-up study. Weight changes were compared using multivariable regression models.

RESULTS: The mean baseline weight of never-smokers was 76.4kg (SD 16.0). The adjusted weight of smokers and ex-smokers differed by -4.2kg (95% CI: -5.9, -2.6), and -0.7kg (95% CI: -2.5, 1.1), respectively. The adjusted 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 5.0kg (SD 7.0), and the adjusted PCWG was 2.8kg (95% CI: 1.7, 3.9) compared with never-smokers, and 3.5kg (95% CI: 2.3, 4.8) compared with smokers. The follow-up weight did not differ between quitters and never-smokers (0.1kg; 95% CI: -2.4, 2.6).

CONCLUSION: Smokers weigh less than never-smokers. By quitting, they gain weight and end up weighing the same as comparable never-smokers. Weight gain rates differ by smoking status. Consequently, PCWG depends on the length of follow-up. Our graphical model indicates that smoking cessation results in a return to normal weight development.

OriginalsprogEngelsk
TidsskriftPreventive Medicine
Vol/bind81
Sider (fra-til)320-325
Antal sider6
ISSN0091-7435
DOI
StatusUdgivet - 9 okt. 2015

ID: 45752218