Challenges and Management of Nutritional Deficiencies and Metabolic Complications Post-Bariatric Surgery: A Preventive and Multidisciplinary Approach

Abstract

Bariatric surgery is widely recognized as an effective intervention for patients with severe obesity, facilitating significant and sustained weight loss and reducing obesity-related comorbidities. However, the procedure is associated with long-term nutritional deficiencies and metabolic complications, impacting patients’ health and quality of life. This article explores the nutritional and metabolic challenges that arise post-bariatric surgery, particularly deficiencies in vitamin B12, iron, calcium, and vitamin D, alongside complications such as postprandial hypoglycemia, osteoporosis, and dumping syndrome. These issues often result from anatomical modifications and nutrient malabsorption following procedures like Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG). Using a preventive and multidisciplinary approach, we conducted a comprehensive literature review analyzing current studies and clinical practices for managing these postoperative complications. Preventive strategies are emphasized, including tailored multivitamin supplementation, hormonal assessments, dietary modifications, and structured follow-up protocols involving a team of nutritionists, endocrinologists, and physical therapists. Additionally, the paper reviews data on the hormonal shifts in ghrelin and GLP-1 levels, examining their roles in regulating hunger, glucose homeostasis, and postoperative metabolic balance. Our findings underscore the importance of individualized care and proactive management to enhance patient outcomes and mitigate the adverse effects associated with bariatric surgery. By fostering a multidisciplinary approach, this study provides insights into optimizing post-surgical care, ensuring that the long-term benefits of bariatric surgery are maintained while addressing the complex nutritional and metabolic needs of patients.