Nutritional assessment and preparation for adult bariatric surgery candidates: Clinical practice

Shiri Sherf-Dagan, Tali Sinai, Ariela Goldenshluger, Inbal Globus, Yafit Kessler, Chaya Schweiger, Tair Ben-Porat

Research output: Contribution to journalReview articlepeer-review

12 Scopus citations


Bariatric surgery (BS) has proven to be highly efficacious in the treatment of obesity and its comorbidities. However, careful patient selection is critical for its success. Thus, patients should undergo medical, behavioral, and nutritional assessment by a multidisciplinary team. From the nutritional point of view, BS candidates should undergo nutritional assessment, preparation, and education by a registered dietitian in the preoperative period. Currently, detailed specified and comprehensive information on these topics is lacking. The present narrative review aimed to summarize the available literature concerning both the preoperative nutritional assessment components and the preoperative nutritional preparation and education components of patients planning to undergo BS. Current literature indicates that proper management before BS should include a comprehensive nutritional assessment, in which it is advisable to perform a clinical interview to assess patients' medical background, weight management history, eating patterns and pathologies, oral health, physical activity habits, nutritional status, supplementation usage, BS knowledge, surgery expectations and anthropometric measurements. Nutritional preparation and educational strategies should include an individualized preoperative weight-loss nutrition program, improvement of glycemic control, micronutrients deficiencies correction, eating and lifestyle habits adaptation, physical activity initiation, and strengthening knowledge on obesity and BS. At this stage, more well-designed intervention and longtermcohort studies are needed in order to formulate uniformevidence-based nutritional guidelines for patients who plan to undergo BS, including populations at higher nutritional risk. Moreover, postoperative outcomes of presurgical nutritional intervention programs should be studied.

Original languageEnglish
Pages (from-to)1020-1031
Number of pages12
JournalAdvances in Nutrition
Issue number3
StatePublished - 1 May 2021


  • Dietary supplements
  • Eating behaviors
  • Glycemic control
  • Nutrition evaluation
  • Obesity surgery
  • Oral health
  • Physical activity
  • Skeletal status
  • Weight loss


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