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Updated: May 29, 2026

Roux-en-Y Gastric Bypass Operation in Rats

Roux-en-Y Gastric Bypass Operation in Rats

Published on: June 11, 2012

Update on micronutrients in bariatric surgery.

Daniel Valentino¹, Krishnan Sriram, Padmini Shankar

¹Division of Surgical Critical Care, Department of Surgery, Stroger Hospital of Cook County, Chicago, Illinois, USA.

Current Opinion in Clinical Nutrition and Metabolic Care

|September 6, 2011

Summary

Micronutrient deficiencies are common in obese patients before and after bariatric surgery. Early detection and a systematic approach to supplementation are crucial for preventing serious complications.

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Last Updated: May 29, 2026

Roux-en-Y Gastric Bypass Operation in Rats

Roux-en-Y Gastric Bypass Operation in Rats

Published on: June 11, 2012

Area of Science:

Bariatric Surgery
Nutritional Science
Endocrinology

Background:

Obesity is a global epidemic with associated micronutrient deficiencies despite macronutrient excess.
Bariatric surgery is a common treatment for obesity but can cause or worsen micronutrient deficiencies.

Purpose of the Study:

To review perioperative strategies for detecting, preventing, and treating micronutrient deficiencies in bariatric surgery patients.
To highlight practical and clinical aspects of these nutritional issues.

Main Methods:

Literature review focusing on perioperative micronutrient management in bariatric surgery.
Emphasis on clinical suspicion, laboratory confirmation, and supplementation routes.

Main Results:

Micronutrient deficiencies are prevalent pre- and post-bariatric surgery, especially with malabsorptive procedures.
A systems-based approach aids in identifying deficiencies and guiding laboratory testing.
Oral supplementation is preferred, with parenteral routes reserved for specific cases.

Conclusions:

Clinicians must recognize the high incidence of micronutrient deficiencies in obese patients undergoing bariatric surgery.
A systematic, team-based approach is essential to minimize morbidity from delayed diagnosis and treatment.