Effectiveness of a Low-Calorie Diet for Liver Volume Reduction Prior to Bariatric Surgery: a Systematic Review

Marleen M. Romeijn*, Aniek M. Kolen, Danielle D. B. Holthuijsen, Loes Janssen, Goof Schep, Wouter K. G. Leclercq, Francois M. H. van Dielen

*Corresponding author for this work

Research output: Contribution to journal(Systematic) Review article peer-review


An energy-restricted diet is often prescribed before bariatric surgery to reduce weight and liver volume. While very-low-calorie diets (VLCDs, 450-800 kcal per day) have shown to be effective, the effectiveness of low-calorie diets (LCDs, 800-1500 kcal per day) is less obvious. The objective of this systematic review was to elucidate the effectiveness of LCD on liver volume reduction in patients awaiting bariatric surgery. Eight studies (n = 251) were included describing nine different diets (800-1200 kcal, 2-8 weeks). An LCD was effective in liver volume reduction (12-27%) and weight loss (4-17%), particularly during the first weeks. The LCD showed an acceptable patients' compliance. Based on these findings, an LCD (800-1200 kcal), instead of a VLCD, for 2 to 4 weeks should be preferred.

Original languageEnglish
Pages (from-to)350-356
Number of pages7
JournalObesity Surgery
Issue number1
Early online date2 Nov 2020
Publication statusPublished - Jan 2021


  • Bariatric surgery
  • Low-calorie diet
  • Liver volume
  • Preoperative diet
  • SIZE
  • CARE
  • FAT

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