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Disordered eating and weight loss after bariatric surgery

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Eating and Weight Disorders - Studies on Anorexia, Bulimia and Obesity Aims and scope Submit manuscript

Abstract

Purposes

Aberrant eating patterns are frequently observed in bariatric patients. Since bariatric operations produce alterations in food transit and in appetite/satiety balance, postoperative eating behavior changes are not surprising.

Methods

88 consecutive obese patients undergoing Roux-en-Y gastric bypass (RYGBP, 50 cases) and Sleeve Gastrectomy (SG, 38 cases) were retrospectively evaluated. Beside anthropometric data measurement, eating behavior was assessed by direct interview prior to the operation and at the first and second postoperative years: patients were considered as eating disordered (ED) when referred habitual occurrence of binge eating and nibbling/grazing. Weight loss was assessed by percent of BMI loss (% Δ BMI). Together with standard follow-up, patients received additional behavioral/dietetic support upon request.

Results

Postoperative ED patients showed lower % Δ BMI than the not ED ones at one (30.7% ± 8,5 vs. 26.8% ± 10, p < 0.02) and two (32% ± 10.3 vs. 27.4% ± 12.9, p < 0.05) years after operation, the follow-up rate being 82% and 76%, respectively, without differences between RYGBP and SG group. After RYGBP, an improvement of eating behavior was observed (ED patients from 75 to 28% at 1 year and to 27% at 2 years), while no changes were observed after SG. In SG patients, the number of additional behavioral/dietetic support sessions throughout the follow-up was positively associated with % Δ BMI.

Discussion

The postoperative normalization of eating pattern has a role in weight loss after bariatric surgery. Behavioral/dietetic support is indicated in all SG patient, while after RYGBP is useful only when weight loss is unsatisfactory.

Level of evidence

III: retrospective cohort study.

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Authors and Affiliations

  1. Nutritional Unit, Ospedale Policlinico San Martino, University of Genova, Genova, Italy

    Raffaella Gradaschi, Virginia Molinari, Samir Giuseppe Sukkar & Paola De Negri

  2. Department of Internal Medicine, University of Genova, Largo Benzi 8, Genova, 16132, Italy

    Gian Franco Adami

  3. Department of Surgery, University of Genova, Genova, Italy

    Giovanni Camerini

Authors
  1. Raffaella Gradaschi
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  2. Virginia Molinari
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  3. Samir Giuseppe Sukkar
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  4. Paola De Negri
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  5. Gian Franco Adami
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Correspondence to Gian Franco Adami.

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This is retrospective clinical studies. All procedures performed were in accordance with the ethical standards of University of Genova, Ospedale Policlinico San Martino, Genova Italy, and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

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All patients signed the informed consent for the operation and for the anonymous data processing.

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Gradaschi, R., Molinari, V., Sukkar, S.G. et al. Disordered eating and weight loss after bariatric surgery. Eat Weight Disord 25, 1191–1196 (2020). https://doi.org/10.1007/s40519-019-00749-x

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