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September 28, 2026Updates in SurgeryOpen Access

One-year weight-loss trajectories and associated baseline factors after laparoscopic sleeve gastrectomy: a retrospective cohort study

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Key result

Laparoscopic sleeve gastrectomy achieves ~30% mean total weight loss at 12 months.

  • n=489

Why the study?

One-year weight-loss trajectories and baseline factors associated with postoperative outcomes after laparoscopic sleeve gastrectomy were not well characterized.

What are the one-year weight-loss trajectories and associated baseline factors after laparoscopic sleeve gastrectomy in adult patients?

Population

489 adult patients undergoing laparoscopic sleeve gastrectomy

Design

Retrospective cohort study

Follow-up

12 months

Authors

YWYaxuan WangRZRui ZhaoAXAnming Xu

Discussion

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Implication

Substantial weight loss seen after laparoscopic sleeve gastrectomy; extends observational data but leaves open long-term durability and comparative efficacy.

Key Points

  • To evaluate one-year weight-loss trajectories following laparoscopic sleeve gastrectomy and identify baseline factors associated with 12-month postoperative outcomes.
  • Retrospective cohort analysis of 489 adult patients (mean age 32.5 ± 9.5 years; mean baseline BMI 36.7 ± 5.6 kg/m²) who underwent surgery between January 2021 and June 2024.
  • Body weight outcomes were evaluated at 1, 3, 6, and 12 months using generalized linear mixed-effects models and multivariable linear regression.
  • Weight-related metrics followed a nonlinear trajectory with rapid early decline followed by deceleration, reaching a mean percentage total weight loss of 30.2% at 12 months, with 73.6% achieving at least 20% total weight loss.
  • Age, ethnicity, baseline body mass index, and visceral fat area demonstrated independent associations with 12-month percentage total weight loss.

Study Design

Type

Cohort (n=489)

Multicenter

No

Structured PICO

What are the one-year weight-loss trajectories and associated baseline factors after laparoscopic sleeve gastrectomy in adult patients?

P
Population
489 adult patients who underwent laparoscopic sleeve gastrectomy, followed for 12 months to evaluate weight-loss trajectories.
E
Exposure
Laparoscopic sleeve gastrectomy
O
Outcome
Longitudinal changes in body weight, body mass index, percentage total weight loss, and percentage excess weight loss at 1, 3, 6, and 12 months after surgery, and baseline factors associated with percentage total weight loss at 12 monthssurrogate

Laparoscopic sleeve gastrectomy results in significant non-linear weight loss over 1 year, with age, ethnicity, baseline BMI, and visceral fat area predicting outcomes.

Cite This Study

Wang et al. (2026) conducted a cohort in Obesity (n=489). Laparoscopic sleeve gastrectomy was evaluated on Percentage total weight loss at 12 months. Laparoscopic sleeve gastrectomy resulted in a mean percentage total weight loss of 30.2% at 12 months, with 73.6% of patients achieving at least 20% total weight loss.

synapsesocial.com/papers/6ab9b5a47822ec8fc3d90847https://doi.org/10.1007/s13304-026-02863-9
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Long-term outcomes and quality of life after sleeve gastrectomy with major complications2026 · 4 citations
  2. 2Actual weight loss trajectories after bariatric surgery compared with the SOPHIA prediction tool: An observational comparison study2025 · 6 citations
  3. 3New Criteria for `Obesity Disease' in Japan2002 · 1,655 citations
  4. 4Cutoff Values for Normal Anthropometric Variables in Asian Indian Adults2003 · 546 citations
  5. 5Excess visceral fat area as an independent risk factor for early postoperative complications in patients with obesity undergoing bariatric surgery2023 · 14 citations