The EBBS questionnaire (Eating Behavior after Bariatric Surgery) is a useful tool for identifying individuals at risk of long-term weight regain after bariatric surgery

Purpose : Bariatric surgery (BS) is an effective treatment for severe obesity, yet weight regain (WR) affects a significant proportion of patients in the long term. The lack of useful and standardized tools makes the follow-up of these patients more difficult. The Eating Behavior After Bariatric Surgery (EBBS) questionnaire was designed to assess adherence to post-surgical lifestyle recommendations, which may predict successful weight maintenance. This study aimed to adapt the EBBS for Spanish-speaking patients and evaluate its utility in assessing adherence to long-term lifestyle changes and its association with weight outcomes. Material and methods: A total of 100 patients who underwent a sleeve gastrectomy (mean follow-up: 90.4 ± 46 months) were included. The EBBS was administered to evaluate food, drink, behavior, and lifestyle domains. Results: Significant weight regain was observed in 70% of participants, and emotional eating (65%) and depression (53%) were common. The EBBS demonstrated good internal consistency (Cronbach’s alpha = 0.662). Higher total EBBS scores were significantly associated with greater excess weight loss (EWL), particularly for patients maintaining over 50% EWL (p = 0.04). Logistic regression revealed that EBBS scores >13.5 predicted EWL >50% (OR = 17.8, p = 0.010), underscoring the value of this tool in identifying patients at risk for WR. Conclusions: The Spanish version of the EBBS is a reliable tool for assessing post-BS eating behaviors and predicting long-term weight outcomes. Tailored interventions based on EBBS results may improve adherence to dietary and lifestyle recommendations, reducing the risk of WR.