Weight regain following Roux-en-Y gastric bypass: Etiology and surgical treatment

Danit Dayan*, Joseph Kuriansky, Subhi Abu-Abeid

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The Roux-en-Y gastric bypass (RYGB) surgery helps patients achieve excellent excess weight loss, with subsequent improvement or resolution of co-morbidities. However, up to 20% of all RYGB patients, and 40% of the super morbidly obese, experience significant weight regain. The etiology of weight regain is multifactorial; hence, multidisciplinary management is mandatory. Revision options for failed conservative and medical management include resizing the restrictive component of the bypass or intensifying malabsorption. While improvement of restriction generally has limited efficacy, intensifying malabsorption achieves significant long-term excess weight loss. The optimal surgical option should be personalized, considering eating behavior and psychological issues, surgical anatomy of the bypass, and anesthetic and surgical risks.

Original languageEnglish
Pages (from-to)823-828
Number of pages6
JournalIsrael Medical Association Journal
Issue number12
StatePublished - 2019


  • Conversion
  • Etiology
  • Revision
  • Roux-en-Y gastric bypass (RYGB)
  • Weight regain


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