Nutritional and Lifestyle Behaviors Reported Following One Anastomosis Gastric Bypass Based on a Multicenter Study

Shiri Sherf-Dagan, Reut Biton, Rui Ribeiro, Yafit Kessler, Asnat Raziel, Carina Rossoni, Hasan Kais, Rossela Bragança, Zélia Santos, David Goitein, Octávio Viveiros, Yitka Graham, Kamal Mahawar, Nasser Sakran, Tair Ben-Porat

Research output: Contribution to journalArticlepeer-review


This study aimed to describe nutritional and lifestyle parameters following one-anastomosis gastric bypass (OAGB). A multicenter study among OAGB patients across Israel (n = 277) and Portugal (n = 111) was performed. Patients were approached according to the time elapsed since surgery. An online survey with information regarding demographics, anthropometrics, and nutritional and lifestyle aspects was administered in both countries simultaneously. Respondents from Israel (pre-surgery age of 41.6 ± 11.0 years, 75.8% females) and Portugal (pre-surgery age of 45.6 ± 12.3 years, 79.3% females) reported changes in their appetite (≤94.0% and ≤94.6%), changes in their taste (≤51.0 and ≤51.4%), and intolerance to specific foods (i.e., red meat, pasta, bread, and rice). Bariatric surgery-related eating recommendations were generally followed well, but a trend toward lower adherence was evident in groups with longer time elapsed since surgery in both countries. Most respondents from Israel and Portugal reported participation in follow-up meetings with a surgeon (≤94.0% and 100%) and a dietitian (≤92.6% and ≤100%), while far fewer reported participation in any follow-up meeting with a psychologist/social worker (≤37.9% and ≤56.1%). Patients following OAGB might experience changes in appetite, taste, and intolerance to specific foods. Adherence to bariatric surgery-related eating recommendations is not always satisfying, especially in the longer term post-surgery.

Original languageEnglish
Article number1515
Issue number6
StatePublished - 21 Mar 2023


  • Adult
  • Bariatric Surgery
  • Female
  • Gastric Bypass
  • Humans
  • Life Style
  • Male
  • Middle Aged
  • Obesity, Morbid/surgery
  • Retrospective Studies
  • Surveys and Questionnaires
  • adherence
  • lifestyle behaviors
  • nutrition
  • one anastomosis gastric bypass

All Science Journal Classification (ASJC) codes

  • Food Science
  • Nutrition and Dietetics


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