ArticleRevista medica del Instituto Mexicano del Seguro Social2026
[Weight regain after bariatric surgery: incidence at a tertiary-care center].
Article in Revista medica del Instituto Mexicano del Seguro Social, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Obesity is a global epidemic whose treatment includes alternatives such as bariatric surgery, in which weight regain is considered a common postoperative complication. Objective: To compare the incidence of weight regain at 2 years between sleeve gastrectomy and gastric bypass. Material and methods: Descriptive report of a retrospective cohort study including patients undergoing sleeve gastrectomy or gastric bypass, with postoperative body weight recorded and 2-year follow-up in the outpatient clinic at a tertiary care hospital in Mexico. Pre- and postoperative weight, body mass index (BMI), ideal weight, preoperative excess weight, percentage of excess weight lost, weight regain, and total weight loss were analyzed. Results: 83 patients were included: 61 (73.4%) women and 22 (26.5%) men with a mean age of 43.3 years, pre-surgical weight of 127.12 ± 28.7 kg and BMI of 47.2 ± 9.14 kg/m². Of these, 15.6% received gastric sleeve and 84.3% gastric bypass. The overall incidence of weight regain was lower after bypass according to the second Voorwinde definition (p = 0.02), and higher in women (62.3%) compared to men (31.8%) in both procedures (p = 0.014). Conclusions: Gastric bypass had a lower incidence of weight regain compared to gastric sleeve, and it was more common in women. No significant differences in the remission of comorbidities were identified between the 2 techniques.
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