Abstract
Bariatric surgery, recommended by the Ministry of Health for patients with obesity, has a direct impact on hormone levels, such as leptin and ghrelin, influencing the regulation of appetite and metabolism. In addition, the intervention presents nutritional challenges, such as anemia and vitamin deficiencies, especially vitamin B12, resulting from gastric resection. The article highlights the importance of understanding these complex hormonal and nutritional systems in order to optimize the clinical results of bariatric surgery. Calorie restriction, hormonal changes favoring satiety and improved insulin sensitivity are highlighted as key components for initial success. However, post-surgical management requires a multidisciplinary approach, involving health professionals, to address nutritional challenges and ensure a holistic transformation in patient health.
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