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Related Experiment Video

Updated: Aug 11, 2025

Roux-en-Y Gastric Bypass Operation in Rats
07:37

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Kwashiorkor after gastric bypass.

Raelina S Howell1, Shrey Shah1, Saila Khan1

  • 1Department of Surgery, NYU Langone Hospital-Long Island, New York, USA.

Journal of Surgical Case Reports
|February 9, 2023
PubMed
Summary

Gastric bypass can lead to severe protein deficiency, causing Kwashiorkor, a rare condition. Medical professionals should consider this risk in patients with malnutrition after weight-loss surgery.

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Area of Science:

  • Bariatric surgery
  • Nutritional science
  • Endocrinology

Background:

  • Gastric bypass surgery is a popular bariatric procedure for morbid obesity.
  • The surgery can worsen pre-existing nutritional deficits due to reduced intake and malabsorption.
  • Severe protein deficiency is a potential complication, though rare.

Observation:

  • A case study of a female patient who underwent gastric bypass surgery is presented.
  • The patient developed Kwashiorkor, a severe protein-energy malnutrition syndrome.
  • This highlights a rare but serious potential outcome of the procedure.

Findings:

  • Kwashiorkor incidence after gastric bypass is reported at 4.7%.
  • The case illustrates the link between gastric bypass and the development of severe malnutrition.
  • Prompt recognition is crucial for patient outcomes.

Implications:

  • Healthcare providers should maintain a high index of suspicion for Kwashiorkor in post-bariatric surgery patients with malnutrition symptoms.
  • Awareness of this complication can lead to earlier diagnosis and intervention.
  • Further research into nutritional monitoring post-gastric bypass may be warranted.