Weight Loss Outcomes and Lifestyle Patterns Following Sleeve Gastrectomy: an 8-Year Retrospective Study of 212 Patients

Tair Ben-Porat, Lior Mashin, Dunia Kaluti, Ariela Goldenshluger, Jaber Shufanieh, Abed Khalaileh, Mahmud Abu Gazala, Yoav Mintz, Ronit Brodie, Nasser Sakran, Amihai Rottenstreich, Ram Elazary

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Purpose: Sleeve gastrectomy (SG) is an effective treatment for extreme obesity; however, long-term weight loss outcomes remain largely understudied. We aimed to examine the long-term weight changes following SG and patient characteristics and lifestyle patterns related to weight loss outcomes. Materials and Methods: Data from medical records of patients operated in a tertiary university medical center between 2008 and 2014 were reviewed, along with information derived from a telephone questionnaire. Information included the following: current medical status, medications, side effects, behavior, lifestyle habits, and weight changes. Results: A total of 212 patients (69.3% females) were included, with a median follow-up duration of 8 years post-SG. Mean age and baseline body mass index (BMI) of participants were 39.7 ± 12.0 years and 42.2 ± 4.9 kg/m2, respectively. Mean BMI, percentage excess weight loss, and percentage total body weight loss were 33.1 ± 6.1, 55.5 ± 27.5%, and 21.7 ± 10.7%, respectively. Higher baseline BMI was found to be the strongest independent predictor for insufficient weight loss (OR = 0.90, P = 0.001, 95% CI 0.85, 0.96). Sweetened beverage intake, usage of psychiatric medications, higher initial BMI, and lower age were significant predictors for increased weight gain from nadir weight (P < 0.0001, P = 0.005, P = 0.035, and P < 0.0001, respectively). Conclusions: SG patients were found to maintain a notable long-term weight loss. Nevertheless, weight regain and insufficient weight loss were prevalent in the long-term post-operative period, and were related to certain lifestyle patterns. Clinical practice should emphasize the relationship between post-operative weight loss outcomes and specific behaviors. Efforts should be made to educate patients on the need for lifelong follow-up and support. Graphical abstract: [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)4836-4845
Number of pages10
JournalObesity Surgery
Issue number11
StatePublished - Nov 2021

Bibliographical note

Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.


This study was conducted in partial fulfillment of the requirements for the degree of Doctor in Medicine in the Faculty of medicine at the Hebrew University of Jerusalem, Israel.

FundersFunder number
Hebrew University of Jerusalem


    • Bariatric surgery
    • Lifestyle
    • Obesity
    • Sleeve gastrectomy
    • Weight regain


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