[Nutritional deficiencies and supplementation after metabolic surgery]

Area of Science:

• Metabolic surgery
• Nutritional science
• Gastroenterology

Background:

• Rising rates of morbid obesity in Germany necessitate increased bariatric surgical interventions.
• Bariatric surgery offers significant weight reduction, comorbidity improvement, and enhanced quality of life compared to conservative treatments.
• Long-term metabolic deficits, particularly nutrient deficiencies, are primary risks associated with various bariatric procedures.

Purpose of the Study:

• To characterize metabolic complications following bariatric surgery.
• To outline prophylaxis strategies for these complications, including surveillance and supplementation.
• To provide an overview of risks associated with specific bariatric procedures.

Main Methods:

• Review of current literature on metabolic complications after bariatric surgery.
• Analysis of nutrient deficiencies linked to different surgical techniques (e.g., gastric banding, sleeve gastrectomy, biliopancreatic diversion, Roux-en-Y gastric bypass).
• Examination of established guidelines for post-bariatric surgery management.

Main Results:

• Gastric banding and sleeve gastrectomy are associated with B-vitamin deficiencies.
• Malabsorptive procedures like biliopancreatic diversion and Roux-en-Y gastric bypass can lead to deficiencies in iron, folate, vitamins B1, B12, and D.
• Metabolic complications necessitate ongoing patient surveillance and potential supplementation.

Conclusions:

• Patients undergoing bariatric surgery require lifelong follow-up to monitor for metabolic and surgical complications.
• Effective supplementation and treatment strategies are essential for managing long-term nutrient deficits.
• Current recommendations are based on guidelines from the American Association of Bariatric and Metabolic Surgery.