Trial reportNicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco2026
An Exploratory Analysis of Patterns of Weight Change in a Post-Cessation Weight Management Trial.
Trial report in Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03156660 (Efficacy of Two Novel Behavioral Post-cessation Weight Gain Interventions), which is not on this map. Not yet cited in PubMed.
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Efficacy of Two Novel Behavioral Post-cessation Weight Gain Interventions
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5 authors.
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Abstract
introductionPrevious research investigating trajectories of weight change after quitting smoking has been limited due to infrequent weight measurements; newer e-scales data facilitate more frequent weight measurement. We explored the rate of weight gain and when weight change stabilized via secondary data analyses from the post-cessation weight management-focused "Fit & Quit" trial. AIMS AND
methodsAfter completion of one of three randomized weight intervention conditions, all participants located in the United States completed a behavioral smoking cessation intervention with varenicline pharmacotherapy in 2018-2022. Participants were asked to weigh daily on study-provided e-scales throughout the 12-month study. Mixed-effects models were performed to characterize weight change over time and to test whether the intervention condition or gender impacted the temporal rate of weight change (n = 132).
resultsRate of weight change in the first month after quitting smoking was most rapid, at + 0.0111 kg/day. To identify when weight stabilized, we use a fifth-degree polynomial model and found that participants began gaining weight immediately after quitting, with the rate of gain peaking around the 21st day. Weight gain continued at a lower, but still statistically significant, rate until approximately 70 days after cessation, after which the weight began to plateau. All intervention condition groups had similar rates of weight gain, with no gender differences in the rate of weight gain.
conclusionsThe first month after quitting smoking was a particularly vulnerable time period for weight gain. Future programs combining weight management and smoking cessation should emphasize maintenance of weight management strategies within the first month after quitting smoking. IMPLICATIONS: Future post-cessation weight management programs should prioritize maintenance of weight management strategies within the first month after quitting smoking, regardless of the type of weight management strategy or the gender of the participants. Studies examining post-cessation weight gain should ensure measurement of weight gain for at least 2-3 months after quitting smoking.
trial registrationThe trial is registered on clinicaltrials.gov (NCT03156660).
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