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Background & Aims: To compare groups of bariatric patients with preoperative scores of Binge Eating Scale (BES) above and below the clinical cut off value on weight outcomes up to 60 months following surgery., Methods: This is a prospective observational study involving 108 Brazilian patients (follow-up rate: 48.1%) operated by Roux-en-Y gastric bypass. In the preoperative period, they were clinically evaluated, and BES was applied. Based on the scores, patients were categorized as high or low according to established cut off 17 for binge eaters. Follow-up weight loss was obtained (3, 6, 12, 24, 36, 48, and 60 months) using data from medical records. The percentage of total weight loss (%TWL) was examined by generalized linear model., Results: 41.7% of patients had BES scores higher than 17 at baseline. Weight loss was significant up to 12 months. The greatest weight loss was at 24 months of follow-up, ranging from 2.7 to 110.4 kg (mean 42.9 ± 17.8 kg). In the short postoperative period (3, 24, and 36 months), %TWL was significantly different between groups. At 24 months, patients with higher scores lost more %TWL than those with lower scores (35.1 ± 0.8% vs 31.6 ± 0.7%, p = 0.029). However, this difference was not fount at 60 months postoperatively (mean 28.9 ± 9.6%). In a multivariate analysis, the presence of depression, age, and BES score were not associated with %TWL at 24 and 60 months., Conclusions: The results suggest that preoperative BES scores point to a similar weight loss after bariatric surgery. Further studies with long-term follow-up are necessary to evaluate this finding., Competing Interests: Declaration of competing interest The authors declared no conflict of interest., (Copyright © 2020 European Society for Clinical Nutrition and Metabolism. Published by Elsevier Ltd. All rights reserved.)